Mitsubishi Electronics Peh P8 User Manual

Air-Conditioners  
INDOOR UNIT  
PEH-P8, 10, 16, 20MYA  
FOR USER  
PER LUTENTE  
FÜR BENUTZER  
POUR LUTILISATEUR  
PARA EL USUARIO  
VOOR DE GEBRUIKER  
FÖR ANVÄNDAREN  
PARA O UTILIZADOR  
OPERATION MANUAL  
For safe and correct use, please read this operation manual thoroughly before operating the air-conditioner unit.  
BEDIENUNGSHANDBUCH  
Zum sicheren und einwandfreien Gebrauch der Klimaanlage dieses Bedienungshandbuch vor Inbetriebnahme gründlich durchlesen.  
MANUEL D’UTILISATION  
Pour une utilisation correcte sans risques, veuillez lire le manuel d’utilisation en entier avant de vous servir du climatiseur.  
MANUAL DE INSTRUCCIONES  
Lea este manual de instrucciones hasta el final antes de poner en marcha la unidad de aire acondicionado para garantizar un uso seguro y correcto.  
ISTRUZIONI DI FUNZIONAMENTO  
Leggere attentamente questi istruzioni di funzionamento prima di avviare l’unità, per un uso corretto e sicuro della stessa.  
BEDIENINGSHANDLEIDING  
Voor een veilig en juist gebruik moet u deze bedieningshandleiding grondig doorlezen voordat u de airconditioner gebruikt.  
DRIFTSMANUAL  
Läs denna driftsmanual noga för säkert och korrekt bruk innan luftkonditioneringen används.  
MANUAL DE OPERAÇÃO  
Para segurança e utilização correctas, leia atentamente o manual de operação antes de pôr a funcionar a unidade de ar condicionado.  
Contents  
1. Safety precautions ...................................................................................... 3  
1.1. Installation ................................................................................. 3  
1.2. During operation ........................................................................ 4  
1.3. Disposing of the unit .................................................................. 4  
2. Names and functions of various parts ........................................................ 4  
3. Operation .................................................................................................... 5  
3.1. ON/OFF ..................................................................................... 6  
3.2. Selecting operation.................................................................... 6  
3.3. Room temperature adjustment .................................................. 7  
3.4. Fan speed adjustment ............................................................... 7  
3.5. Time setting ............................................................................... 7  
3.6. Timer setting.............................................................................. 7  
3.7. Others........................................................................................ 8  
4. The smart way to use ................................................................................. 8  
5. Caring for the machine ............................................................................... 8  
6. Troubleshooting........................................................................................... 9  
7. Troubleshooting [for wireless remote controller (option)] ............................ 9  
8. Installation and transferring works, and checking ..................................... 10  
9. Specifications ............................................................................................ 10  
1. Safety precautions  
1) Outdoor unit  
Warning:  
s Before operating the unit, make sure you read all theSafety  
precautions”.  
s “Safety precautions” lists important points about safety.  
Please be sure to follow them.  
The outdoor unit must be installed on a stable, level surface, in a place  
where there is no accumulation of snow, leaves or rubbish.  
Do not stand on, or place any items on the unit.You may fall down or the  
item may fall, causing injury.  
Symbols used in the text  
Warning:  
Caution:  
Describes precautions that should be observed to avoid the risk of injury or  
death to the user.  
The outdoor unit should be installed in a location where air and noise emit-  
ted by the unit will not disturb the neighbours.  
Caution:  
2) Indoor unit  
Describes precautions that should be observed to prevent damage to the  
unit.  
Warning:  
Symbols used in the illustrations  
: Indicates an action that must be avoided.  
The indoor unit should be securely installed. If the unit is loosely mounted, it  
may fall, causing injury.  
: Indicates that important instructions must be followed.  
: Indicates a part which must be grounded.  
3) Remote controller  
Warning:  
: Indicates that caution should be taken with rotating parts. (This symbol is  
displayed on the main unit label.) <Color: yellow>  
The remote controller should be installed in such a way that children cannot  
play with it.  
: Beware of electric shock. (This symbol is displayed on the main unit label.)  
<Color: yellow>  
4) Drain hose  
Warning:  
Caution:  
Carefully read the labels affixed to the main unit.  
Make sure that the drain hose is installed so that drainage can go ahead  
smoothly. Incorrect installation may result in water leakage, causing dam-  
age to furniture.  
1.1. Installation  
s After you have read this manual, keep it and the Installation Manual in a  
safe place for easy reference whenever a question arises. If the unit is  
going to be operated by another person, make sure that this manual is  
given to him or her.  
5) Power line, fuse or circuit breaker  
Warning:  
Make sure that the unit is powered by a dedicated line. Other appliances  
connected to the same line could cause an overload.  
Make sure that there is a main power switch.  
Warning:  
The unit should not be installed by the user. Ask the dealer or an author-  
ized company to install the unit. If the unit is installed improperly, water  
leakage, electric shock or fire may result.  
Be sure to adhere to the unit’s voltage and fuse or circuit breaker ratings.  
Never use a piece of wire or a fuse with a higher rating than the one  
specified.  
Use only accessories authorized by Mitsubishi Electric and ask your  
dealer or an authorized company to install them. If accessories are in-  
stalled improperly, water leakage, electric shock or fire may result.  
The Installation Manual details the suggested installation method. Any  
structural alteration necessary for installation must comply with local  
building code requirements.  
Never repair the unit or transfer it to another site by yourself. If repair is  
performed improperly, water leakage, electric shock or fire may result. If  
you need to have the unit repaired or moved, consult your dealer.  
The appliance is not intended for use by young children or infirm per-  
sons without supervision.  
6) Grounding  
Caution:  
The unit must be properly grounded. Never connect the grounding wire  
to a gas pipe, water pipe, lightning conductor or telephone grounding  
wire. If the unit is not grounded properly, electric shock may result.  
Check frequently that the ground wire from the outdoor unit is properly  
connected to both the unit’s ground terminal and the grounding elec-  
trode.  
Young children should be supervised to ensure that they do not play  
with the appliance.  
3
In case of failure  
Warning:  
1.2. During operation  
Caution:  
Never remodel the air conditioner. Consult your dealer for any repair serv-  
ice. Improper repair work can result in water leakage, electric shock, fire,  
etc.  
Do not use any sharp object to push the buttons, as this may damage the  
remote controller.  
Do not twist or tug on the remote controller cord as this may damage the  
remote controller and cause malfunction.  
If the remote controller displays an error indication, the air conditioner  
does not run, or there is any abnormality, stop operation and contact  
your dealer. Leaving the unit as it is under such conditions can result in  
fire or failure.  
Never remove the upper case of the remote controller. It is dangerous to  
remove the upper case of the remote controller and touch the printed  
circuit boards inside. Doing so can result in fire and failure.  
Never wipe the remote controller with benzene, thinner, chemical rags,  
etc. Doing so can result in discoloration and failure. To remove heavy  
stains, soak a cloth in neutral detergent mixed with water, wring it out  
thoroughly, wipe the stains off, and wipe again with a dry cloth.  
Never block or cover the indoor or outdoor unit’s intakes or outlets. Tall  
items of furniture underneath the indoor unit, or bulky items such as  
large boxes placed close to the outdoor unit will reduce the unit’s effi-  
ciency.  
If the power breaker is frequently activated, get in touch with your dealer.  
Leaving it as it is can result in fire or failure.  
If the refrigeration gas blows out or leaks, stop the operation of the air  
conditioner, thoroughly ventilate the room, and contact your dealer. Leav-  
ing the unit as it is can result in accidents due to oxygen deficiency.  
When the air conditioner is not to be used for a long  
time  
Warning:  
If the air conditioner is not to be used for a long time due to a seasonal  
change, etc., run it for 4 - 5 hours with the air blowing until the inside is  
completely dry. Failing to do so can result in the growth of unhygienic,  
unhealthy mold in scattered areas throughout the room.  
When it is not to be used for an extended time, keep the [power supply]  
turned OFF.  
If the power supply is kept on, several watts or several tens of watts will  
be wasted. Also, the accumulation of dust, etc., can result in fire.  
Keep the power switched ON for more than 12 hours before starting op-  
eration. Do not turn the power supply OFF during seasons of heavy use.  
Doing so can result in failure.  
Do not splash water over the unit and do not touch the unit with wet  
hands. An electric shock may result.  
Do not spray combustible gas close to the unit. Fire may result.  
Do not place a gas heater or any other open-flame appliance where it will  
be exposed to the air discharged from the unit. Incomplete combustion  
may result.  
Warning:  
Do not remove the front panel or the fan guard from the outdoor unit  
when it is running.You could be injured if you touch rotating, hot or high-  
voltage parts.  
Never insert fingers, sticks etc. into the intakes or outlets, otherwise in-  
jury may result, since the fan inside the unit rotates at high speed. Exer-  
cise particular care when children are present.  
If you detect odd smells, stop using the unit, turn off the power switch  
and consult your dealer. Otherwise, a breakdown, electric shock or fire  
may result.  
1.3. Disposing of the unit  
Warning:  
When you need to dispose of the unit, consult your dealer. If pipes are re-  
moved incorrectly, refrigerant (fluorocarbon gas) may blow out and come  
into contact with your skin, causing injury. Releasing refrigerant into the  
atmosphere also damages the environment.  
When you notice exceptionally abnormal noise or vibration, stop opera-  
tion, turn off the power switch, and contact your dealer.  
Do not over-cool. The most suitable inside temperature is one that is  
within 5°C of the outside temperature.  
Do not leave handicapped people or infants sitting or standing in the  
path of the airflow from the air-conditioner.This could cause health prob-  
lems.  
Caution:  
Do not direct the airflow at plants or caged pets.  
Ventilate the room frequently. If the unit is operated continuously in a  
closed room for a long period of time, the air will become stale.  
2. Names and functions of various parts  
Indoor unit  
Remote Controller  
Air inlet: Sucks the ambient air in.  
Check out your remote controller.  
Different controllers are used for different systems.  
Filter:The filter built into the unit as standard is a simple filter to remove visible  
dust and dirt. If air purification is one of the conditions required for use, consult  
with your dealer. (For details on how to clean, refer to page 8.)  
[Fig. 2.0.2] (P.2)  
A
Wireless remote controller (option)  
Remote controller  
B
Air outlet: Blows the air back out into the room.  
PEH-P-MYA series  
[Ceiling concealed type]  
[Fig. 2.0.1] (P.2)  
A
Air outlet  
B
Air inlet  
C
Air filter  
4
3. Operation  
Cooling  
How to use the wireless remote controller  
(option)  
The air conditioner works to cool the room to the selected temperature.  
The fan blows air continuously at the selected speed.  
Replacing the Batteries and how to set the current time  
Drying (dehumidifying) : Disabled in the heating  
mode  
The drying mode efficiently reduces the humidity in the room so that the room  
temperature is not lowered excessively. When the selected room temperature is  
reached in the Low setting, the airflow will stop for ten minutes and then will resume  
for three minutes to keep the humidity low.  
[Fig. 3.0.1] (P.2)  
If no signal is transmitted and the indoor unit’s lamp does not light up even if the  
remote controller is operated, the batteries may have run out, so replace them with  
new ones as described below.  
1
2
Remove the front lid.  
Replace the batteries with alkali batteries (size AAA). Make sure that the bat-  
teries are installed in the correct direction. (Insert the minus pole of the batter-  
ies first.)  
Heating  
The air conditioner works to heat the room to the selected temperature.  
3
4
Reattach the front lid.  
When selecting the heating mode, a desired room temperature must be set to  
avoid any cool air. The fan will gradually increase the airflow delivery up to a  
selected rate.  
Press the RESET button using a thin stick.  
h
min  
5
6
Press the  
and  
button to set the current time.  
When the room temperature reaches the selected temperature and the com-  
pressor stops, the fan will deliver a gentle airflow.  
Press the CLOCK button using a thin stick and close the front lid.  
If you are not going to use the unit for a long period of time, remove the batteries to  
prevent damage which may occur due to leakage of electrolyte.  
Automatic (cooling / heating)  
The air conditioner automatically goes into the cooling or heating mode to keep the  
room at the selected temperature.  
Caution:  
Signal from the WIRELESS REMOTE CONTROLLER may not be received  
by the indoor unit installed in a room with fluorescent lamps using cyclic  
ignition stabilizer of high voltage pulse or intermittent oscillator. If fluo-  
rescent lamps are to be newly installed, consult your local dealer.  
If other air conditioner or electric appliance are effected due to operation  
of the WIRELESS REMOTE CONTROLLER or vice versa, install the air  
conditioner at some distance from others or consult your dealer.  
Install the air conditioner in a place free of dust, high temperature, vibra-  
tion and shock.  
Ventilation  
Ventilation will not be displayed when not available (settings cannot be speci-  
fied).  
When ventilation is selected it will operate in all modes.  
Note:  
The airflow settings cannot be changed on the main unit.  
Do not cover the REMOTE CONTROLLER.  
5
D C B A U T Q S  
CENTRALLY CONTROLLED  
ON OFF  
1Hr.  
˚C  
CLOCK  
CHECK  
FILTER  
CHECK MODE  
TEST RUN  
R
˚C  
STAND BY  
DEFROST  
ERROR CODE  
CENTRALLY CONTROLLED  
ON OFF  
1Hr.  
FUNCTION  
NOT AVAILABLE  
˚C  
P
O
CLOCK  
TEMP.  
CHECK  
ON/OFF  
1
E
F
FILTER  
CHECK MODE  
TEST RUN  
B
˚C  
2
3
N
M
STAND BY  
DEFROST  
ERROR CODE  
FUNCTION  
FILTER  
NOT AVAILABLE  
A
0
TEMP.  
ON/OFF  
CHECK TEST  
TIMER SET  
PAR-20MAA  
H
I KLJ  
C
G
4 5 6 87 9  
Remote controller-Button  
Remote controller-Display  
1
2
3
4
[Room temperature adjustment] Button  
[Timer/continuous] Button  
[Selecting operation] Button  
[Time selection] Button  
7
8
9
0
A
B
C
[Up/down airflow direction] Button  
[Ventilation] Button  
A
B
C
D
E
Current time/Timer  
Centralized control  
Timer ON  
K
Not available function  
Ventilation  
L
[Checking/built-in] Button  
[Test run] Button  
M
N
O
P
Q
R
S
T
U
Function setting mode  
Test run mode  
Error check mode  
Filter sign  
Abnormality occurs  
Operation mode:  
[Time-setting] Button  
[Filter] Button  
COOL,  
FAN, HEAT  
DRY,  
AUTO,  
5
6
[Louver] Button  
[ON/OFF] Button  
F
G
H
I
J
Preparing for Heating mode  
Defrost mode  
[Fan speed adjustment] Button  
Position of built-in room temperature  
Set effective for 1 hr.  
Sensor position  
Room temperature  
Airflow  
Never expose the remote controller to direct sunlight. Doing so can result in  
the erroneous measurement of room temperature.  
Set temperature  
Power ON  
Never place any obstacle around the lower right-hand section of the remote  
controller. Doing so can result in the erroneous measurement of room tem-  
perature.  
Louver  
Fan speed  
3.2. Selecting operation  
A
E
When selecting operation  
1. Press the 3 [selecting operation] button  
V
C
Consecutive press of the selecting operation button switches the operation  
over to E “ ”, “ ”, “ ”, (“ ”), and (“ ”). For the contents of operation,  
check the display.  
CENTRALLY CONTROLLED  
ON OFF  
1Hr.  
˚C  
B
CLOCK  
1
CHECK  
E
FILTER  
CHECK MODE  
TEST RUN  
A
B
˚C  
TEMP.  
STAND BY  
DEFROST  
ERROR CODE  
FUNCTION  
NOT AVAILABLE  
ON/OFF  
For cooling  
6
3
D
F
1
Press the 3 [selecting operation] button and bring up the “ ” display.  
FILTER  
3
2
For dry  
CHECK TEST  
E
TIMER SET  
Press the 3 [selecting operation] button and bring up the “ ” display.  
PAR-20MAA  
Dry operation cannot be carried out at a room temperature of less than 18 °C.  
For fan  
4
6 87  
Press the 3 [selecting operation] button and bring up the “ ” display.  
The fan operation functions to circulate the air in the room.  
The temperature of the room cannot be set by fan operation.  
Before starting operation  
Start running after the HOdisplay has disappeared.The HOdisplay briefly  
appears on the room temperature display (max. 3 minutes) when the power is  
turned on and after a power failure.This does not indicate any failure of the air  
conditioner.  
Caution:  
Never expose your body directly to cool air for a long time. Excessive expo-  
sure to cool air is bad for your health, and should therefore be avoided.  
Dry operation  
During heating operation, even if the indoor unit is set to operation while the  
outdoor unit is in defrosting operation, operation starts after the defrosting op-  
eration of the outdoor unit has ended.  
The dry is a microcomputer-controlled dehumidifying operation which controls ex-  
cessive air-cooling according to the room temperature of your choice. (Not usable  
for heating.)  
1. Until reaching room temperature of your choice  
3.1. ON/OFF  
The compressor and indoor fan function is linked motion according to the change  
of the room temperature and automatically repeat ON/OFF.  
Start an operation  
1. Press the B [ON/OFF] button  
2. When reaching room temperature of your choice  
Both the compressor and indoor fan stop.  
Operation lamp  
lights up and operation starts.  
When stop continues for 10 minutes, the compressor and indoor fan are oper-  
ated for 3 minutes to keep the humidity low.  
Stop an operation  
1. Press the B [ON/OFF] button again  
For heating  
Operation lamp goes off and operation stops.  
Press the 3 [selecting operation] button to bring up the “ ” display.  
Regarding displays during heating operation “DEFROST”  
Displayed only during the defrosting operation.  
Once the buttons have been set, pressing of the [ON/OFF] button only can  
repeat the same operation thereafter.  
During operation, the operation lamp above the [ON/OFF] button lights up.  
“STAND BY”  
Displayed from the start of heating operation until the moment warm air blows out.  
Caution:  
Even if the operation button is pressed immediately after the operation is  
once stopped, operation is not restarted for about 3 minutes. This function  
protects the machine. It automatically starts operation after the lapse of ap-  
proximately 3 minutes.  
6
Caution:  
3.6. Timer setting  
When the air conditioner is used together with burners, thoroughly ven-  
tilate the area. Insufficient ventilation can result in accidents due to oxy-  
gen deficiency.  
If the timer is set, the unit starts (stops) at the set time, and the time mode is  
terminated.  
Never place a burner at a place where it is exposed to the airflow from the  
air conditioner.  
When you wish to confirm the starting and ending time, press the 4 [time  
selection] button while C “  
is displayed.  
Doing so can result in imperfect combustion of the burner.  
The microcomputer functions in the following cases:  
Air does not blow out when heating starts.  
- To prevent any cool air from escaping.  
Function of timer  
On-timer  
Wait a moment until the airflow comes out naturally.  
Set the on-timer for the time the working day begins in your company.  
When the set start time arrives, the air conditioner starts operation.  
For ventilation  
Press the operation mode (  
) button and select the ventila-  
Off-timer  
tion mode  
.
Use the off-timer as a reminder to turn off the air conditioner. When the set end-  
work time arrives, the air conditioner stops operation.  
B
should be displayed.  
Used to provide ventilation without using the heat or air conditioning functions  
of the unit.  
There are three methods for using the timer.  
1. ON/OFF Timer: When setting both starting and ending time  
The  
display will not appear when the ventilation equipment is not at-  
2. On-timer:  
When only setting the starting time  
tached.  
(Ending time is set to - - : - - )  
3. Off-timer:  
When only setting the ending time  
3.3. Room temperature adjustment  
(Starting time is set to - - : - - )  
To change room temperature  
Press the 1 [room temperature adjustment] button and set the room tem-  
perature of your choice.  
Display example of timer setting  
ON OFF  
ON OFF  
Pressing  
or  
once changes the setting by 1 °C.  
If the pressing is continued, the setting continues to change by 1 °C.  
Indoor temperature can be set within the following range.  
Cooling/dry: 19 - 30 °C  
Heating:  
17 - 28 °C  
The example shows a timer set for operation start at 8:00 and end at 17:00.  
It is impossible to set the room temperature by the air-blow operation.  
1. Press the 2 [timer/continuous] button and bring up the C no display  
*
The range of room temperature display is 8 - 39 °C. Outside this range, the  
display flashes either 8 - 39 °C to inform you if the room temperature is lower or  
higher than the displayed temperature.  
2. Press the 4 [time selection] button and bring up the A“Timer start time”  
display  
3. Press the 4  
(
) button of the 4 [time selection] and set the  
starting time  
3.4. Fan speed adjustment  
When using it as an off-timer, set the starting time to - - : - - .  
Fan speed : 1 stage  
The - - : - - is displayed next to 23:50.  
Display :  
(High)  
4. Press the 4 [time selection] button and bring up the A “Timer end time”  
display  
5. Press the 4  
(
) button of the [time switch] and set the ending  
3.5. Time setting  
time  
Set the current time after turning ON the power of the air conditioner or after  
restoration from a power failure.  
When using it as an on-timer, set the ending time to - - : - - .  
The - - : - - is displayed next to 23:50.  
It can be set regardless of the operation of the indoor unit.  
6. Press the 2 [timer/continuous] button and bring up the C “  
” display.  
During the time operation, the time-setting button becomes void, disabling time  
setting.  
Bringing up the C “  
” display completes the setting  
Every time the 4  
advances (or regresses) by 10 minutes.  
If the button is pressed continuously, it advances (or retrogresses) continuously.  
First set the hour digit and then set the minute digit.  
When the ON/OFF timer mode is set, you can run (on-timer) or stop (off-timer)  
operation by pressing the B [ON/OFF] button even when there is remaining time.  
(
) button of the 4 [timer selection] is pressed once, it  
1. Press the 4 [time selection] button and bring up the A “current time”  
display  
Every time it is pressed, the display changes.  
ON  
OFF  
current  
time”  
timer start  
time”  
timer end  
CLOCK  
(no display)  
time”  
Release  
Press the 2 [timer/continuous] button and disappear the “  
” display.  
Caution:  
1) Ventilator-Airconditioner combined operation  
When the current time is not yet set, the “CLOCK (current time)” display  
flashes, disabling the setting of timer operation.  
1. If the unit is off, press the B ON/OFF button to turn it on.  
The ON indicator should light up.  
2. Set the current time by pressing the 4  
or  
button  
The ventilation equipment will operate automatically when connected to the  
unit.  
2. Press the 8  
You can set the ventilation speed at LOW or HIGH.  
2) Changing the ventilation setting  
Press the 8 button.  
The time cannot be set while the C timer onis displayed.  
While the A CLOCKtime is displayed, press the time setting 4  
buttons and set the time.  
/
button.  
The setting advances one minute every time the 4  
once, and regresses one minute every time the 4  
once.  
When respective 4  
display goes forward fast. It advances in the order of 1 minute unit - 10 minute  
unit - one hour unit.  
button is pressed  
button is pressed  
/
buttons are pressed continuously, the time  
The setting changes each time the button is pushed.  
[Low]  
[High]  
About 10 seconds after the button operation has been completed, the C cur-  
rent timeand A CLOCKdisplays disappear.  
Caution:  
Remote controller is equipped with a simplified clock with a precision of  
about + or - one minute per month.  
The time must be readjusted (reset) every time the air conditioner is sub-  
jected to a power stop of the air conditioner or a power failure.  
7
For wireless remote controller (option)  
3.7. Others  
AUTO STOP  
AUTO START  
CENTRALLY CONTROLLED  
: Displayed when control is executed by a separately  
sold centralized control unit, etc.  
: Displayed from the start of heating operation until the  
moment warm air blows out.  
D
Press the  
or  
button (TIMER SET).  
Time can be set while the following symbol is blinking.  
STAND BY  
DEFROST  
OFF timer : V  
is blinking.  
: This displays indication when some abnormality oc-  
curs in the unit.  
ON timer : V  
is blinking.  
CHECK  
h
min  
E
F
Use the  
and  
buttons to set the desired time.  
NOT AVAILABLE  
: When a button is pressed for any function which the  
indoor unit cannot perform, this display flashes con-  
currently with the display of that function.  
: In the system in which the [Sensor] display is indi-  
cated as the remote controller, room temperature  
measurement is performed by the room temperature  
sensor built into the remote controller.Therefore, pay  
attention to the following:  
Canceling the timer.  
To cancel the OFF timer, press the  
AUTO STOP  
button.  
AUTO START  
To cancel the ON timer, press the  
button.  
It is possible to combine both OFF and ON timers.  
Pressing the  
ON/OFF button of the remote controller during timer mode to  
: Displayed when it is time to clean the filter.  
Press the A [Filter] button twice, then the display is  
disappeared.  
FILTER  
stop the unit will cancel the timers.  
If the current time has not been set, the timer operation cannot be used.  
4. The smart way to use  
Even minimal steps to care for your air conditioner can help make its use far  
more effective in terms of air-conditioning effect, electricity charges, etc.  
Prevent intrusion of heat during air-cooling  
To prevent the intrusion of heat during cooling operation, provide a curtain or a  
blind on the window to block out direct sunlight. Also, do not open the entrance  
or exit except in cases of dire necessity.  
Set the right room temperature  
In cooling operation, a temperature difference of about 5°C between indoors  
and outdoors is optimum.  
Carry out ventilation sometimes  
If the room temperature is raised by 1°C during air-cooling operation, about 10%  
electric power can be saved.  
Since the air periodically gets dirty in a room that is kept closed for a long time,  
ventilation is sometimes necessary. When gas appliances are used together  
with the air conditioner, special precautions must be taken. If the LOSSNAY”  
ventilation unit developed by our company is used, you can perform ventilation  
with less waste. For details on this unit, consult with your dealer.  
Excessive cooling is bad for health.It also results in the waste of electric power.  
Clean the filter thoroughly  
If the screen of the air filter becomes clogged, the airflow and air-conditioning  
effect can be significantly reduced. Further, if the condition is left unattended,  
failure can result. It is particularly important to clean the filter at the beginning  
of the cooling and heating seasons. (When profuse dust and dirt have accu-  
mulated, clean the filter thoroughly.)  
5. Caring for the machine  
Always have filter maintenance performed by a service person.  
Before care-taking, turn the power supply OFF.  
Caution:  
Never pour water or flammable sprays onto the air conditioner. Cleaning using  
these methods can result in the failure of the air conditioner, electric shock,  
or fire.  
Caution:  
Before you start cleaning, stop operation and turn OFF the power supply.  
Remember that the fan is rotating inside at high speed, posing a serious  
risk of injury.  
Replacement of filter  
Indoor units are equipped with filters to remove the dust of sucked-in air.  
Clean the filters using the methods shown in the following sketches. (The  
standard filter should normally be cleaned once a week, and the long-life  
filter at the beginning of each season.)  
[Fig. 5.0.1] (P.2)  
A
Air outlet  
Air filter  
B
D
Air inlet  
C
Air filter handle  
(1) The air filter is located at the air inlet (rear side of the unit).  
(2) Lift the air filter handles and pull the filter towards you.  
How to clean  
(3) If you are going to use an air inlet conduit. remove the air filter. In this case, an  
air filter must be prepared locally and installed at the intake grille.  
Clear dust away lightly or clean it up with a vacuum cleaner. In the case of  
severe staining, wash the filter in lukewarm water mixed with dissolved neutral  
detergent or water, and then rinse off the detergent completely. After washing,  
dry it and fix it back into place.  
Caution:  
Do not dry the filter by exposing it to direct sunlight or warming it using  
fire, etc. Doing so can result in the deformation of the filter.  
Washing it in hot water (more than 50 degree C) can also result in defor-  
mation.  
8
6. Troubleshooting  
Before you call out a repair man, check the following table to see whether there is  
a simple solution to your problem.  
Was a distant command sent from the remote controller?  
Find out if the remote controller was used.  
Is the CENTRALLY CONTROLLED message lit?  
Find out if the remote controller was used.  
Is the automatic (cooling/heating) mode selected?  
Press the start/stop button to stop the unit.  
G
Unit does not cool or heat very well.  
Clean the filter. (Dust and debris that collects in the filter will decrease air-  
flow.)  
Check the temperature setting and adjust it if necessary.  
Increase the space surrounding the outdoor unit.  
Is the air intake or air outlet blocked?  
G
The unit stopped even though the start/stop button was not pushed.  
Is the timer on?  
Is a window or door open?  
Press the start/stop button to restart the unit.  
Was a distant command sent from the remote controller?  
Find out if the remote controller was used.  
Is the CENTRALLY CONTROLLED message lit?  
Find out if the remote controller was used.  
G
G
The unit does not blow air out right away in the heating mode.  
The unit is preparing to deliver warm air.  
The unit stops operating before arriving at the set temperature in the  
heating mode.  
Frost forms when the outdoor temperature is low and humidity is high. Wait  
for about 10 minutes for the frost to melt.  
G
G
G
The remote controller’s timer cannot be set.  
Set the schedule timer if one is connected.  
“HO” is displayed in the remote controller.  
An automatic startup test is being performed (will last for about two minutes).  
G
G
There is a “swishing” noise that occurs from the unit when water flows.  
This sound is made when refrigerant inside of the unit is flowing or refilling.  
An error code is displayed in the remote controller.  
A self-diagnostic function is being performed to preserve the air conditioner.  
A ticking noise is heard from inside of the unit.  
This sound is made when internal parts of the unit expand or contract when  
the temperature changes.  
*
Do not attempt to make repairs yourself. Turn the main switch off and  
contact the dealer from whom you bought the air conditioner. Provide him  
or her with the name of the unit and the information displayed in the re-  
mote controller.  
G
G
G
An odor is detected in the room.  
This is caused when the unit expels odors that have been absorbed from the  
walls, carpets, furniture or clothing.  
G
No display appears on the wireless remote controller. Signals are not  
received by the thin sensor unless sent from close up.  
The batteries are becoming weak.  
A white mist is expelled from the indoor unit.  
This may occur just after the unit is turned on when a high level of humidity is  
present in the room.  
Replace the batteries and press the reset button.  
Water or moisture is expelled from the outdoor unit.  
This occurs to expel water or moisture that may have collected in the pipes  
or around piping fixtures.  
*
If the display does not appear after replacing the batteries, make sure that  
the (+, ) cells are aligned correctly.  
G
G
The operating display of the wireless remote controller’s receiver is flashing.  
A self-diagnostic function is being performed to preserve the air conditioner.  
*
This occurs to dispel water from the heat exchanger.  
G
G
The indicators of the remote controller do not light up when operated.  
Turn on the power switch. “ · ” will be displayed.  
Do not attempt to make repairs yourself. Turn the main switch off and  
contact the dealer from whom you bought the air conditioner. Provide him  
or her with the name of the unit.  
CENTRALLY CONTROLLED is displayed in the remote controller.  
The start and stop functions of the remote controller are not available when  
the CENTRALLY CONTROLLED message is lit.  
The fan in the indoor unit does not operate.  
Check the over-current relay on the fan motor to determine whether it has  
been tripped.  
If the over-current relay has been tripped, reset it after eliminating the cause  
of the problem (e.g. motor lock).  
To reset the over-current relay, open the control box and press the green  
claw on bottom-right of the relay until a click is heard. Release the claw and  
check that it returns to its original position.  
G
G
The start and stop functions are not available just after restarting the  
unit.  
Wait about three minutes (operation has stopped to prevent damage to the  
air conditioner).  
The unit started even though the start/stop button was not pushed.  
Is the timer on?  
Press the start/stop button to stop the unit.  
Note that if it is pressed too hard it will not return to its original position.  
7. Troubleshooting [for wireless remote controller (option)]  
Before you call out a repair man, check the following table to see whether there is a simple solution to your problem.  
Problem  
Solution  
Problem  
Solution  
Unit does not operate at all.  
Turn main power on. Then press the Unit does not start immediately.  
POWER ON/OFF button to turn the unit  
on.  
Wait until the unit restarts automatically.  
The compressor may hesitate resuming  
because a three-minute resume preven-  
tion circuit is incorporated in the outdoor  
unit for protection of the compressor.  
Wait until power is restored, then press  
the POWER ON/OFF button to turn the  
unit on.  
NOTE: After a power cut, the unit will not restart automatically.You will have to restart it by pressing the POWER - ON/OFF button on the remote controller.  
If none of the above apply, turn the main switch off and contact the dealer from whom you bought the air-conditioner, telling him the model name and the nature of the  
problem. Do not try to fix the unit yourself.  
In any of the following cases, turn off the main power switch and contact your local dealer for service:  
The operation lamp (on the main unit) flashes.  
The switches do not work properly.  
The circuit breaker trips frequently (or the fuse blows frequently).  
Water has accidentally been splashed into the unit.  
Water leaks from the unit.  
Something is accidentally dropped into the air-conditioner.  
An unusual noise is heard during operation.  
The following do not indicate any malfunction:  
Odours: smells such as tobacco or cosmetic odours may persist after they have been sucked into the unit.  
Sound of liquid flowing inside indoor unit: this can occur during or after operation and is simply the sound of refrigerant being circulated inside the unit.  
Ticking sound coming from indoor unit: this can occur when cooling or heating has just begun or has just stopped. It is caused by the indoor unit shrinking or expanding  
slightly due to the change in temperature.  
The message CENTRALLY CONTROLLEDappearing on the LCD panel: from time to time, this message may come up on the LCD panel. This does not indicate any  
malfunction.  
9
8. Installation and transferring works, and checking  
Regarding place for installation  
Regarding transfer of installation  
Consult with your dealer for details on installation and transferring the installation.  
When removing and reinstalling the air conditioner when you enlarge your  
home, remodel, or move, consult with your dealer in advance to ascertain the  
cost of the professional engineering work required for transferring the installa-  
tion.  
Caution:  
Never install the air conditioner where there is a risk of leakage of flammable  
gas.  
If gas leaks and accumulates around the unit, fire can result.  
Caution:  
When moving or reinstalling the air conditioner, consult with your dealer.  
Defective installation can result in electric shock, fire, etc.  
Never install the air conditioner at the following place:  
where there is much machine oil  
Regarding noise  
near ocean and beach areas where there is much salt  
where humidity is high  
In installing work, choose a place that can fully bear the weight of the air con-  
ditioner, and where noise and vibration can be reduced.  
where there are hot springs nearby  
where there is much sulfureted gas  
Choose a place where cool or warm air and noise from the outdoor air outlet of  
the air conditioner do not inconvenience the neighbors.  
where there is a high-frequency processing machinery (a high-frequency welder,  
etc.)  
If any alien object is placed near the outdoor air outlet of the air conditioner,  
decreased performance and increased noise can result. Avoid placing any  
obstacles adjacent to the air outlet.  
where acid solution is frequently used  
If the air conditioner produces any abnormal sound, consult with your dealer.  
where special sprays are frequently used  
Install the indoor unit horizontally. Otherwise, water leakage can result.  
Maintenance and inspection  
Take sufficient measures against noise when installing the air conditioners at  
hospitals or communication-related businesses.  
If the air conditioner is used throughout several seasons, the insides can get  
dirty, reducing the performance.  
If the air conditioner is used in any of the above-mentioned environments, frequent  
operational failure can be expected. It is advisable to avoid these types of installa-  
tion sites.  
Depending upon the conditions of usage, foul odors can be generated and  
drainage can deteriorate due to dust and dirt, etc.  
For further details, consult with your dealer.  
Regarding electrical work  
Caution:  
The electrical work must be undertaken by a person who is qualified as  
an electric engineer according to the [technical standard respecting elec-  
trical installation], [internal wiring rules], and the installation instruction  
manual with the absolute use of exclusive circuits.The use of other prod-  
ucts with the power source can result in burnt-out beakers and fuses.  
Never connect the grounding wire to a gas pipe, water pipe, arrester, or  
telephone grounding wire. For details, consult with your dealer.  
In some types of installation sites, the installation of an earth leakage  
breaker is mandatory. For details, consult with your dealer.  
9. Specifications  
PEH-P-MYA SERIES  
Model  
Item  
PEH-P8MYA  
380, 400, 415  
50  
PEH-P10MYA  
380, 400, 415  
50  
PEH-P16MYA  
380, 415  
50  
PEH-P20MYA  
380, 415  
50  
Voltage  
3N~ V  
Hz  
Power source  
Frequency  
kW  
20.9  
26.0  
41.8  
52.0  
Cooling capacity*1  
Heating capacity*1  
kcal/h  
kW  
18,000  
23.7  
22,400  
30.5  
36,000  
47.4  
44,800  
61.0  
kcal/h  
mm  
20,400  
428  
26,200  
428  
40,800  
706  
52,400  
706  
Height  
Dimension  
Net weight  
Width  
Depth  
mm  
1,380  
650  
1,580  
650  
1,690  
865  
1,993  
865  
mm  
kg  
m3/min  
70  
80  
180  
212  
Airflow rate  
60  
80  
140  
170  
Fan  
External static pressure*2  
Pa  
50 <150>  
49  
50 <150>  
53  
150  
150  
Noise level  
dB(A)  
55  
60  
Notes: *1 Refer to the product nameplate attached to the unit for the electrical specifications.  
*2 Rating conditions (cooling) Indoor: 27°C DB, 19°C WB  
*3 Rating conditions (heating) Indoor: 20°C DB  
Outdoor: 35°C DB  
Outdoor: 7°C DB, 6°C DB  
Operating range  
Outdoor air intake temperature  
46°C DB  
Indoor air intake temperature  
32°C DB, 23°C WB  
21°C DB, 15°C WB  
27°C DB  
Maximum  
Minimum  
Maximum  
Minimum  
Cooling  
Heating  
5°C DB  
24°C DB, 18°C WB  
11°C DB, 12°C WB  
20°C DB  
Units should be installed by licensed electric contractor accordingly to local code requirement.  
Noise level of outdoor unit  
Model  
PUH-P8MYA PUH-P10MYA  
56 57  
Noise level dB(A)  
10  
This product is designed and intended for use in the residential, commer-  
cial and light-industrial environment.  
The product at hand is Low Voltage Directive 73/23/EEC  
based on the following Electromagnetic Compatibility Directive 89/  
EU regulations:  
336/EEC  
Please be sure to put the contact address/telephone number on  
this manual before handing it to the customer.  
HEAD OFFICE: MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN  
Printed in Malaysia  
WT04129X01  
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