Mitsubishi Electric Mr. Slim PEAD Series User manual

SERVICE MANUAL
<indoor unit> Service ref.
Models PEAD-RP35EA(2)
PEAD-RP50EA
PEAD-RP60EA
PEAD-RP71EA
PEAD-RP100EA(2)
PEAD-RP125EA
PEAD-RP140EA
TM
1. REFERENCE MANUAL ····························· 2
2. SAFETY PRECAUTION ···························· 3
3. PART NAMES AND FUNCTIONS ············· 7
4. SPECIFICATION ······································· 9
5. FAN PERFORMANCE AND
CORRECTED AIR FLOW ························ 12
6. SOUND LEVELS ······································ 16
7. OUTLINES & DIMENSIONS ···················· 18
8. WIRING DIAGRAM ·································· 20
9. REFRIGERANT SYSTEM DIAGRAM ······ 21
10 . TROUBLESHOOTING ···························· 22
11 . DISASSEMBLY INSTRUCTIONS ············ 34
12 . PARTS LIST ············································· 36
13 . OPTIONAL PARTS ·································· 42
CONTENTS
INDOOR UNIT
REMOTE CONTROLLER
ON/OFF
TEMP.
Series PEAD R407C/R410A
2005
SPLIT-TYPE, HEAT PUMP
AIR CONDITIONERS
NOTE:
•This manual describes only
service data of the indoor
units.

2
REFERENCE MANUAL
1
Service Ref.
PUHZ-RP35/50/60/71/100/125/140VHA
PUHZ-RP100/125/140YHA
PUHZ-RP71/100/125/140VHA-A
PUHZ-RP200/250YHA
PUHZ-RP200/250YHA-A
PU(H)-P·VGAA.UK
PU(H)-P·YGAA.UK
SUZ-KA·VA.TH
Service Manual No.
OC334
OC337
OC338
OC339
PUHZ-P100/125/140VHA.UK OC359
OC336
OC322
1-1. OUTDOOR UNIT’S SERVICE MANUAL
Series (Outdoor unit)
PUHZ-RP·VHA(-A)
PUHZ-RP·YHA(-A)
PU(H)-P·VGAA.UK
PU(H)-P·YGAA.UK
Manual No.
OCS01
PUHZ-P·VHA.UK OCS06
OCS02
1-2.TECHNICAL DATA BOOK

3
[2] Refrigerant recharging
(1) Refrigerant recharging process
1Direct charging from the cylinder.
·R407C cylinder are available on the market has a syphon pipe.
·Leave the syphon pipe cylinder standing and recharge it.
(By liquid refrigerant)
(2) Recharge in refrigerant leakage case
·After recovering the all refrigerant in the unit, proceed to working.
·Do not release the refrigerant in the air.
·After completing the repair service, recharge the cycle with the specified amount of
liquid refrigerant.
[1] Cautions for service
·After recovering the all refrigerant in the unit, proceed to working.
·Do not release refrigerant in the air.
·After completing the repair service, recharge the cycle with the specified amount of
liquid refrigerant.
Cautions for units utilising refrigerant R407C
CAUTIONS RELATED TO NEW REFRIGERANT
Do not use the existing refrigerant piping.
The old refrigerant and lubricant in the existing piping
contains a large amount of chlorine which may cause the
lubricant deterioration of the new unit.
Use “low residual oil piping”
If there is a large amount of residual oil (hydraulic oil, etc.)
inside the piping and joints, deterioration of the lubricant
will result.
Use ESTER , ETHER or HAB as the lubricant to
coat flares and flange connection parts.
If large amount of mineral oil enter, that can cause
deterioration of refrigerant oil etc.
Use liquid refrigerant to charge the system.
If gas refrigerant is used to seal the system, the composition
of the refrigerant in the cylinder will change and performance
may drop.
Do not use a refrigerant other than R407C.
If another refrigerant (R22, etc.) is used, the chlorine in the
refrigerant may cause the lubricant deterioration.
Use a vacuum pump with a reverse flow check valve.
The vacuum pump oil may flow back into the refrigerant
cycle and cause the lubricant deterioration.
Store the piping to be used during installation
indoors with keep both ends sealed until just
before brazing.
(Store elbows and other joints in a plastic bag.)
If dust, dirt, or water enters the refrigerant cycle,
deterioration of the oil and compressor trouble may result. Ventilate the room if refrigerant leaks during
operation. If refrigerant comes into contact with
a flame, poisonous gases will be released.
Gravimeter
Unit
SAFETY PRECAUTION
2

4
[3] Service tools
Use the below service tools as exclusive tools for R407C refrigerant.
No. Tool name Specifications
1Gauge manifold ·Only for R407C.
·Use the existing fitting SPECIFICATIONS. (UNF7/16)
·Use high-tension side pressure of 3.43MPa·G or over.
2Charge hose ·Only for R407C.
·Use pressure performance of 5.10MPa·G or over.
3Electronic scale
4Gas leak detector ·Use the detector for R134a or R407C.
5Adapter for reverse flow check. ·Attach on vacuum pump.
6Refrigerant charge base.
7Refrigerant cylinder. ·For R407C ·Top of cylinder (Brown)
·Cylinder with syphon
8Refrigerant recovery equipment.

5
<Cautions for units utilizing refrigerant R410A>
CAUTIONS RELATED TO NEW REFRIGERANT
Use new refrigerant pipes.
In case of using the existing pipes for R22, be careful with
the following.
·For RP100,125 and 140 be sure to perform pipe
replacement operation before test run.
·Use flare nut as provided with this product.
Use a newly flared pipe.
·Avoid using thin pipes.For the detail, please refer to the
outdoor unit service manual.
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.
If no reverse flow check valve is used, 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 without syphone
tube.
If a charging cylinder is used without syphone tube, the
composition of refrigerant 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)
Make sure that the inside and outside of refrige-
rant piping is clean and it has no contamination
such as sulfur which is 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.
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.
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 installing or relocation of unit
(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 system with the specified amount of refrigerant.
(4) When performing service, install a filter drier simultaneously.
Be sure to use a filter drier for new refrigerant.

6
Gravimeter
Unit
[3] 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
[2] Additional refrigerant charge
When charging directly from cylinder
Ensure that the cylinder for R410A is syphon type.
Charging should be performed with the syphon cylinder type stood vertically.
(Refrigerant must be charged from liquid phase.)

7
PART NAMES AND FUNCTIONS
3
•Indoor Unit
Air intake (sucks the
air inside the room
into the unit)
In case of rear inlet
Air outlet
In case of bottom inlet
(
Only RP35~60EA
)
RP35EA2

8
For purposes of this explanation,
all parts of the display are shown
aslit.Duringactualoperation,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.
“CentrallyControlled”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
Showsthecurrentdayoftheweek.
Time/Timer Display
Showsthecurrenttime,unlessthesimpleorAutoOff
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/DownAirDirectionindica-
tor
The indicator shows the direc-
tion of the outcoming airflow.
“One Hour Only”indicator
Displayed if the airflow is set to
weakanddownwardduringCOOL
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
Showstheroomtemperature.Theroom
temperature display range is 8–39°C.
The display flashes if the temperature
is less than 8 °C or 39 °C or more.
Louver display
Indicatestheactionof the swing louver.
Does not appear if the louver is station-
ary.
(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.
•Remote controller
•Display
Once the controls are set, the same operation mode can be repeated by simply pressing the ON/OFF button.
•Operation buttons
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/Setbutton)
Modebutton(Returnbutton)
Set Time buttons
Back
Ahead
TimerOn/Offbutton
(Set Day button)
Opening the
door.
ON/OFF button
FanSpeedbutton
Filter button
(<Enter>button)
Test Run button
Check button (Clear button)
Airflow Up/Down button
Louver button
(Operation button)
Toprecedingoperation
number.
Ventilation button
(Operation button)
To next operation
number.
Built-in temperature sensor
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 the 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.

9
Service Ref.
Power supplyInput kW
Running current ❇1
❇1
❇1
❇1
A
Starting current A
External finish
Heat exchanger
Fan Fan (drive) ×No.
Fan motor output kW
Airflow (Lo-Hi) m3/min <CFM>
External static pressure Pa
Booster heater kW
Operation control &Thermostat
Noise level (Lo-Hi) dB (A)
Unit drain pipe O.D mm (in.)
Dimensions W mm (in.)
D mm (in.)
H mm (in.)
kg (lbs)
Notes 1. Above data based on indicated voltage
Indoor Unit: Single phase 230V 50Hz
Outdoor Unit: Single phase 230V 50Hz/3 phase 400V 50Hz
INDOOR UNIT
Weight
30Pa
70Pa
Service Ref.
Power supplyInput kW
Running current ❇1
❇1
❇1
❇1
A
Starting current A
External finish
Heat exchanger
Fan Fan (drive) ×No.
Fan motor output kW
Airflow (Lo-Hi) m3/min <CFM>
External static pressure Pa
Booster heater kW
Operation control &Thermostat
Noise level (Lo-Hi) dB (A)
Unit drain pipe O.D mm (in.)
Dimensions W mm (in.)
D mm (in.)
H mm (in.)
kg (lbs)
INDOOR UNIT
Weight
30Pa
70Pa
Service Ref.
Power supplyInput kW
Running current ❇1
❇1
❇1
❇1
A
Starting current A
External finish
Heat exchanger
Fan Fan (drive) ×No.
Fan motor output kW
Airflow (Lo-Hi) m3/min <CFM>
External static pressure Pa
Booster heater kW
Operation control &Thermostat
Noise level (Lo-Hi) dB (A)
Unit drain pipe O.D mm (in.)
Dimensions W mm (in.)
D mm (in.)
H mm (in.)
kg (lbs)
INDOOR UNIT
Weight
30Pa
70Pa
Single phase, 50Hz, 220-240V
Galvanized sheets
Plate fin coil
Centrifugal (direct) ×2
30/70
–
Built in remote controller
R1 (External thread)
935 (36-13/16)
700 (27-5/8)
295 (11-5/8)
33 (73)
0.13
0.55
0.8
0.043
11-14<388-494>
34-38
36-43
0.14
0.61
0.9
0.076
13.5-17<477-600>
36-40
38-44
PEAD-RP35EA PEAD-RP35EA2
Single phase, 50Hz, 220-240V
0.14
0.61
0.9
Galvanized sheets
Plate fin coil
Centrifugal (direct) ×2
0.076
13.5-17<477-600>
30/70
–
Built in remote controller
36-40
38-44
R1 (External thread)
935 (36-13/16)
700 (27-5/8)
295 (11-5/8)
35 (77)
PEAD-RP50EA
Single phase, 50Hz, 220-240V
0.16
0.70
1.0
Galvanized sheets
Plate fin coil
Centrifugal (direct) ×2
0.116
17-21<600-741>
30/70
–
Built in remote controller
37-41
39-46
R1 (External thread)
1,175 (46-1/8)
700 (27-5/8)
295 (11-5/8)
42 (92)
PEAD-RP60EA
SPECIFICATION
4

10
Service Ref.
Power supplyInput kW
Running current ❇1
❇1
❇1
❇1
A
Starting current A
External finish
Heat exchanger
Fan Fan (drive) ×No.
Fan motor output kW
Airflow (Lo-Hi) m3/min <CFM>
External static pressure Pa
Booster heater kW
Operation control &Thermostat
Noise level (Lo-Hi) dB (A)
Unit drain pipe O.D mm (in.)
Dimensions W mm (in.)
D mm (in.)
H mm (in.)
kg (lbs)
INDOOR UNIT
Weight
70Pa
(130Pa)
Service Ref.
Power supplyInput kW
Running current ❇1
❇1
❇1
❇1
A
Starting current A
External finish
Heat exchanger
Fan Fan (drive) ×No.
Fan motor output kW
Airflow (Lo-Hi) m3/min <CFM>
External static pressure Pa
Booster heater kW
Operation control &Thermostat
Noise level (Lo-Hi) dB (A)
Unit drain pipe O.D mm (in.)
Dimensions W mm (in.)
D mm (in.)
H mm (in.)
kg (lbs)
INDOOR UNIT
Weight
70Pa
(130Pa)
Service Ref.
Power supplyInput kW
Running current ❇1
❇1
❇1
❇1
A
Starting current A
External finish
Heat exchanger
Fan Fan (drive) ×No.
Fan motor output kW
Airflow (Lo-Hi) m3/min <CFM>
External static pressure Pa
Booster heater kW
Operation control &Thermostat
Noise level (Lo-Hi) dB (A)
Unit drain pipe O.D mm (in.)
Dimensions W mm (in.)
D mm (in.)
H mm (in.)
kg (lbs)
INDOOR UNIT
Weight
70Pa
(130Pa)
Notes 1. Above data based on indicated voltage
Indoor Unit: Single phase 230V 50Hz
Outdoor Unit: Single phase 230V 50Hz/3 phase 400V 50Hz
Single phase, 50Hz, 220-240V
0.35
1.55
2.0
Galvanized sheets
Plate fin coil
Centrifugal (direct) ×2
0.15
20-25<706-883>
70/(130)
–
Built in remote controller
37-41
40-45
R1 (External thread)
1,175 (46-1/8)
740 (29-1/8)
325 (12-13/16)
44 (97)
PEAD-RP71EA
Single phase, 50Hz, 220-240V
Galvanized sheets
Plate fin coil
Centrifugal (direct) ×2
70/(130)
–
Built in remote controller
R1 (External thread)
1,415 (55-11/16)
740 (29-1/8)
325 (12-13/16)
0.57
2.53
3.2
0.24
27-34<953-1,200>
41-46
42-48
62 (136)
0.59
2.62
3.4
0.27
33.5-42<1,183-1,483>
44-50
46-52
65 (143)
PEAD-RP100EA PEAD-RP100EA2
Single phase, 50Hz, 220-240V
0.59
2.62
3.4
Galvanized sheets
Plate fin coil
Centrifugal (direct) ×2
0.27
33.5-42<1,183-1,483>
70/(130)
–
Built in remote controller
44-50
46-52
R1 (External thread)
1,415 (55-11/16)
740 (29-1/8)
325 (12-13/16)
65 (143)
PEAD-RP125EA