Mitsubishi Electric PEA Series User manual

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SERVICE MANUAL
Model name
<Indoor unit>
Model name
<Indoor unit>
Series PEA
2015
PEA-RP200GAQ
PEA-RP250GAQ
PEA-RP400GAQ
PEA-RP500GAQ
PEA-RP250GA
PEA-RP400GA
PEA-RP500GA
• This manual describes only
service data of the indoor
units.
CONTENTS
1. TYPES OF INDOOR UNITS ·······························2
2. SAFETY PRECAUTION ···································3
3. PART NAMES AND FUNCTIONS····················8
4. SPECIFICATIONS ··········································10
5. DATA·······························································11
6. OUTLINES AND DIMENSIONS·····················13
7.WIRING DIAGRAM·········································16
8. REFRIGERANT SYSTEM DIAGRAM ············20
9.TROUBLESHOOTING····································21
10. SERVICE DATA (PARTS NAME) ···················33
Indoor unit
Remote controller (option)
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2
1TYPES OF INDOOR UNITS
Service Reference
PEA-RP200GAQ
PEA-RP250GAQ
PEA-RP400GAQ
PEA-RP500GAQ
PEA-RP200GAQ(R2).TH-AF
PEA-RP250GAQ(R2).TH-AF
PEA-RP400GAQ(R1).TH-AF
PEA-RP500GAQ(R1).TH-AF
Model name
Specification
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3
SAFETY PRECAUTION
2
Cautions for units utilising refrigerant R410A
CAUTIONS RELATED TO NEW REFRIGERANT
Use new refrigerant pipes.
Make sure that the inside and outside of refrige-
rant piping is clean and it has no contamination
such as sulfur hazardous for use, oxides, dirt,
shaving particles, etc.
In addition, use pipes with specified thickness.
Store the piping to be used during installation
indoors and keep both ends of the piping sealed
until just before brazing. Leave elbow joints, etc.
in their packaging.)
Use ester oil, ether oil or alkylbenzene oil small
amount) as the refrigerant oil applied to flares
and flange connections.
In case of using the existing pipes for R22, be careful with
the followings.
áBesure to perform replacement operation
before test run.
áAvoid using thin pipes.
Charge refrigerant from liquid phase of gas
cylinder.
If the refrigerant is charged from gas phase, composition
change may occur in refrigerant and the efficiency will be
lowered.
Do not use refrigerant other than R410A.
If other refrigerant (R22 etc. is used, chlorine in refrige-
rant can cause deterioration of refrigerant oil etc.
Use a vacuum pump with a reverse flow check
valve.
Vacuum pump oil may flow back into refrigerant cycle and
that can cause deterioration of refrigerant oil etc.
Use the following tools specifically designed for
use with R410A refrigerant.
The following tools are necessary to use R410A refrigerant.
Keep the tools with care.
If dirt, dust or moisture enter into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com-
pressor.
Do not use a charging cylinder.
If a charging cylinder is used, the composition of refrigera-
nt will change and the efficiency will be lowered.
Flare tool
Electronic refrigerant
charging scale
Vacuum pump adaptor
Size adjustment gauge
Gauge manifold
Torque wrench
Gas leak detector
Charge hose
Tools for R410A
Contamination inside refrigerant piping can cause deterio-
ration of refrigerant oil etc.
If dirt, dust or moisture enter into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com-
pressor.
If large amount of mineral oil enter, that can cause deterio-
ration of refrigerant oil etc.
Ventilate the room if refrigerant leaks during
operation. If refrigerant comes into contact with
a flame, poisonous gases will be released.
[1] Cautions for service
(1) Perform service after collecting the refrigerant left in unit completely.
(2) Do not release refrigerant in the air.
(3) After completing service, charge the cycle with specified amount of refrigerant.
(4) When performing service, install a filter drier simultaneously.
Be sure to use a filter drier for new refrigerant.
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4
[2] Storage of Piping Material
(1) Storage location
Store the pipes to be used indoors. (Warehouse at site or owner’s warehouse)
Storing them outdoors may cause dirt, waste, or water to infiltrate.
(2) Pipe sealing before storage
Both ends of the pipes should be sealed until immediately before brazing.
Wrap elbows and T’s in plastic bags for storage.
*The new refrigerator oil is 10 times more hygroscopic than the conventional refrigerator oil (such as Suniso). Water
infiltration in the refrigerant circuit may deteriorate the oil or cause a compressor failure. Piping materials must be stored
with more care than with the conventional refrigerant pipes.
OK
OK
NG
NG
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5
 
No changes from the conventional method, but special care is required so that foreign matter (ie. oxide scale, water, dirt,
etc.) does not enter the refrigerant circuit.
Example: Inner state of brazed section
hen non-oxide brazing was not used hen non-oxide brazing was used
    
1. Do not conduct refrigerant piping work outdoors on a rainy day.
2. Apply non-oxide brazing.
3. Use a brazing material (BCuP-3) which requires no flux when brazing between copper pipes or between a copper
pipe and copper coupling.
4. If installed refrigerant pipes are not immediately connected to the equipment, then braze and seal both ends of them.

1. The new refrigerant oil is 10 times more hygroscopic than the conventional oil. The probability of a machine failure if
water infiltrates is higher than with conventional refrigerant oil.
2. A flux generally contains chlorine. A residual flux in the refrigerant circuit may generate sludge.

¥Commercially available antioxidants may have adverse effects on the equipment due to its residue, etc. hen
applying non-oxide brazing, use nitrogen.
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6
  
No changes from the conventional method. Note that a refrigerant leakage detector for R22 cannot detect R407C leakage.
Halide torch R22 leakage detector
    
1. Pressurize the equi ment with nitrogen u to the design ressure and then judge the equi mentÕs airtightness, taking
tem erature variations into account.
2. When investigating leakage locations using a refrigerant, be sure to use R407C.
3. Ensure that R407C is in a liquid state when charging.

1. Use of oxygen as the ressurized gas may cause an ex losion.
2. Charging with R407C gas will lead the com osition of the remaining refrigerant in the cylinder to change and this
refrigerant can then not be used.

¥Aleakage detector for R407C is sold commercially and it should be urchased.
 
1. Vacuum um with check valve
Avacuum um with a check valve is required to revent the vacuum um oil from flowing back into the refrigerant
circuit when the vacuum um ower is turned off ( ower failure).
It is also ossible to attach a check valve to the actual vacuum um afterwards.
2. Standard degree of vacuum for the vacuum um
Use a um which reaches 0.5 Torr (500 MICRON) or below after 5 minutes of o eration.
In addition, be sure to use a vacuum um that has been ro erly maintained and oiled using the s ecified oil. If the
vacuum um is not ro erly maintained, the degree of vacuum may be too low.
3. Required accuracy of the vacuum gauge
Use a vacuum gauge that can measure u to 5 Torr. Do not use a general gauge manifold since it cannot measure a
vacuum of 5 Torr.
4. Evacuating time
¥ Evacuate the equi ment for 1 hour after Ð755 mmHg (5 Torr) has been reached.
¥ After envacuating, leave the equi ment for 1 hour and make sure the that vacuum is not lost.
5. O erating rocedure when the vacuum um is sto ed
In order to revent a backflow of the vacuum um oil, o en the relief valve on the vacuum um side or loosen the
charge hose to drawn in air before sto ing o eration.
The same o erating rocedure should be used when using a vacuum um with a check valve.
 
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[6] Additional refrigerant charge
When charging directly from cylinder
· Check that cylinder for R410A on the market is syphon type.
· Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)
[7] Service tools
Use the below service tools as exclusive tools for R410A refrigerant.
No. Specifications
1Gauge manifold ·Only for R410A
·Use the existing fitting specifications.(UNF1/2)
·Use high-tension side pressure of 5.3MPa·G or over.
2Charge hose ·Only for R410A
·Use pressure performance of 5.09MPa·G or over.
3Electronic scale
4Gas leak detector ·Use the detector for R134a, R407C or R410A.
5Adaptor for reverse flow check ·Attach on vacuum pump.
6Refrigerant charge base
7Refrigerant cylinder ·Only for R410A Top of cylinder (Pink)
Cylinder with syphon
8Refrigerant recovery equipment
Gravimeter
Unit
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8
3PART NAMES AND FUNCTIONS
● Remote controller (option)
Once the controls are set, the same operation mode can be repeated by simply pressing the ON/OFF button.
● Operation buttons
●Indoor Unit
Air intake duct flange
Air outlet duct flange
Air outlet
Air intake
(sucks the air inside the room into the unit)
PAR-21MAA
ON/OFF
FILTER
CHECK
OPERATION
CLEAR
TEST
TEMP.
MENU
BACK DAY
MONITOR/SET
CLOCK
ON/OFF
Set Temperature buttons
Down
Up
Timer Menu button
(Monitor/Set button)
Mode button (Return button)
Set Time buttons
Back
Ahead
Timer On/Off button
(Set Day button)
Opening the
door.
ON/OFF button
Fan Speed button
Filter button
(<Enter> button)
Test Run button
Check button (Clear button)
Airflow Up/Down button
Louver button
(Operation button)
To preceding operation
number.
Ventilation button
(Operation button)
To next operation number.
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9
●Display
For purposes of this explanation,
all parts of the display are shown
as lit. During actual operation, only
the relevant items will be lit.
˚F˚C
˚F˚C
ERROR CODE
AFTER
TIMER
TIME SUN MON TUE WED THU FRI SAT
ON
OFF
Hr
AFTER
FILTER
FUNCTION
ONLY1Hr.
WEEKLY
SIMPLE
AUTO OFF
Identifies the current operation
Shows the operating mode, etc.
*Multilanguage display is sup-
ported.
“Centrally Controlled” indicator
Indicates that operation of the re-
mote controller has been prohib-
ited by a master controller.
“Timer Is Off” indicator
Indicates that the timer is off.
Temperature Setting
Shows the target temperature.
Day-of-Week
Shows the current day of the week.
Time/Timer Display
Shows the current time, unless the simple or Auto Off
timer is set.
If the simple or Auto Off timer is set, shows the time
remaining.
“Sensor” indication
Displayed when the remote controller
sensor is used.
“Locked” indicator
Indicates that remote controller but-
tons have been locked.
“Clean The Filter” indicator
Comes on when it is time to clean the
filter.
Timer indicators
The indicator comes on if the corre-
sponding timer is set.
Up/Down Air Direction indica-
tor
The indicator shows the direc-
tion of the outcoming airflow.
“One Hour Only” indicator
Displayed if the airflow is set to
weak and downward during COOL
or DRY mode. (Operation varies
according to model.)
The indicator goes off after one
hour, at which time the airflow di-
rection also changes.
Room Temperature display
Shows the room temperature.
Louver display
Indicates the action of the swing
louver. Does not appear if the
louver is stationary.
(Power On indicator)
Indicates that the power is on.
Fan Speed indicator
Shows the selected fan speed.
Ventilation indicator
Appears when the unit is running in
Ventilation mode.
Caution
●Only the Power on indicator lights when the unit is stopped and power supplied to the unit.
●If you press a button for a feature that is not installed at the indoor unit, the remote controller will display the “Not Available”
message.
If you are using the remote controller to drive multiple indoor units, this message will appear only if he feature is not
present at the parent unit.
●When power is turned ON for the first time, it is normal that “PLEASE WAIT” is displayed on the room temperature indication
(For max. 2minutes). Please wait until this “PLEASE WAIT” indication disappear then start the operation.
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10
4SPECIFICATIONS
Model name
Cooling
1.00
2.0
Heating
1.00
2.0
H
W
D
Hi
Lo
kW
A
CMM
L/s
CMM
L/s
Pa
mmAq
dB(A)
dB(A)
mm
mm
mm
kg
lbs
PEA-RP200GAQ PEA-RP250GAQ
3PH 4W 50Hz 380-415V
Galvanized steel
Cross fin coil
Centrifugal (direct) o2
0.77
65
1083
52
867
150
15
Remote control & built in
51
48
R1
400
1400
634
70
154
Cooling
1.18
2.3
Heating
1.18
2.3
3PH 4W 50Hz 380-415V
Galvanized steel
Cross fin coil
Centrifugal (direct) o2
0.77
80
1333
64
1067
150
15
Remote control & built in
52
49
R1
400
1600
634
77
169
Power supply (phase, cycle,voltage)
Input
Running current
External finish
Heat exchanger
Operation control & Thermostat
Sound level
Drain connection
Dimensions
Weight
Mode
Fan (drive) o No.
Fan motor output
Airflow
External static pressure
Hi
Lo
Model name
Cooling
1.55
3.8
Heating
1.55
3.8
H
W
D
kW
A
CMM
L/s
Pa
mmAq
dB(A)
mm
mm
mm
kg
lbs
PEA-RP400GAQ PEA-RP500GAQ
3PH 4W 50Hz 380-415V
Galvanized steel
Cross fin coil
Centrifugal (direct) o2
1.3
120
2,000
150
15
Remote control & built in
52
R1
595
1947
764
130
286
Cooling
2.84
5.4
Heating
2.84
5.4
3PH 4W 50Hz 380-415V
Galvanized steel
Cross fin coil
Centrifugal (direct) o2
1.8
160
2,667
150
15
Remote control & built in
53
R1
595
1947
764
133
293
Power supply (phase, cycle,voltage)
Input
Running current
External finish
Heat exchanger
Operation control & Thermostat
Sound level
Drain connection
Dimensions
Weight
Mode
Fan (drive) o No.
Fan motor output
Airflow
External static pressure
Fan
Fan
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