Mitsubishi Electric Mr. Slim PSA-RP71KA User manual

SERVICE MANUAL
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SPLIT-TYPE, AIR CONDITIONERS
CONTENTS
1. REFERENCE MANUAL ..................................2
2. SAFETY PRECAUTION ..................................3
3. PARTS NAMES AND FUNCTIONS ................5
4. SPECIFICATIONS ...........................................7
5. NOISE CRITERION CURVES.........................9
6. OUTLINES AND DIMENSIONS.....................10
7. WIRING DIAGRAM........................................ 11
8. REFRIGERANT SYSTEM DIAGRAM...........12
9. TROUBLESHOOTING...................................13
10. SPECIAL FUNCTION ....................................23
11. DISASSEMBLY PROCEDURE......................26
[Service Ref.]
PSA-RP71KA
PSA-RP100KA
PSA-RP125KA
PSA-RP140KA
September 2018
Notes:
• This manual describes only
service data of the indoor
units.
PARTS CATALOG (OCB528)
Model name
indication
Indoor unit
[Model Name]
PSA-RP71KA
PSA-RP100KA
PSA-RP125KA
PSA-RP140KA
No. OCH528
REVISED EDITION-B
Revision:
• Some descriptions have been
modified.
OCH528 REVISED EDITION-A
is void.

2 3
OCH528B
1REFERENCE MANUAL
1-1. OUTDOOR UNIT’S SERVICE MANUAL
1-2. TECHNICAL DATA BOOK
Model Name Service Ref. Service Manual No.
PUHZ-ZRP71VHA
PUHZ-ZRP100/125/140VKA
PUHZ-ZRP100/125/140YKA
PUHZ-ZRP71VHA
PUHZ-ZRP71VHAR1(-ER/ET)
PUHZ-ZRP100/125/140VKA
PUHZ-ZRP100/125/140YKA(R1)
OCH527/OCB527
PUHZ-P100/125/140VHA3
PUHZ-P100/125/140YHA
PUHZ-P100YHA2
PUHZ-P100/125/140VHA3.UK
PUHZ-P100/125/140VHA3R1.UK
PUHZ-P100/125/140VHA3R2.UK
PUHZ-P125/140VHA3R3.UK
PUHZ-P100/125/140YHA.UK
PUHZ-P100/125/140YHAR1.UK
PUHZ-P125/140YHAR2.UK
PUHZ-P100YHA2.UK
OCH415/OCB415
PU(H)-P71/100VHA
PU(H)-P71/100/125/140YHA
PU(H)-P71/100VHA#1.UK
PU(H)-P71/100VHA#2.UK
PU(H)-P71/100VHA#3.UK
PU(H)-P71/100/125/140YHA#1.UK
PU(H)-P71/100/125/140YHA#2.UK
PU(H)-P71/100/125/140YHAR3.UK
PU(H)-P125/140YHAR4(R5/R6).UK
OC379
Series (Outdoor unit) Manual No.
PUHZ-P • VHA
PUHZ-P • YHA OCS17
PU(H)-P • VHA
PU(H)-P • YHA OCS07

3
OCH528B
Cautions for units utilizing 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 contaminants
such as sulfur hazardous for use, oxides, dirt,
shaving particles, etc.
In addition, use pipes with specified thickness.
Store the piping 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 following.
· Be sure to clean the pipes and make sure that the insides
of the pipes are clean.
· Change flare nut to the one provided with this product.
Use a newly flared pipe.
· Avoid 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.
Handle 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.
Never use any refrigerant other than that specified.
Doing so may cause a burst, an explosion, or fire when the
unit is being used, serviced, or disposed of.
Correct refrigerant is specified in the manuals and on the
spec labels provided with our products.
We will not be held responsible for mechanical failure,
system malfunction, unit breakdown or accidents caused
by failure to follow the instructions.
Use the specified refrigerant only.
2SAFETY PRECAUTION

54 5
OCH528B
Unit
Electronic weighing scale
[3] Service tools
Use the below service tools as exclusive tools for R410A refrigerant.
[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) If moisture or foreign matter might have entered the refrigerant piping during service, ensure to remove them.
[2] Additional refrigerant charge
When charging directly from cylinder
(1) Check that cylinder for R410A on the market is syphon type.
(2) Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)
No. Tool name Specifications
1Gauge manifold · Only for R410A
· Use the existing fitting specifications. (UNF1/2)
· Use high-tension side pressure of 5.3 MPa·G or over.
2Charge hose · Only for R410A
· Use pressure performance of 5.09 MPa·G or over.
3Electronic weighing 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 —

5
OCH528B 5
Disperses air
up and down Disperses air left
and right.
Removes dust and pollutants from intake air.
(Intakes air from room.)
PARTS NAMES AND FUNCTIONS
3
•Controller
Once the controls are set, the same operation mode can be repeated by simply pressing the ON/OFF button.
Indoor Unit
•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/Set button)
Mode button (Return button)
Set Time buttons
Back
Ahead
Timer On/Off button
(Set Day button)
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.
Opening
the door

76 7
OCH528B
For the purposes of explanation,
all parts of the display are shown.
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 supported.)
“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 orAuto 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 outgoing 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 maximum 2 minutes). Please wait until this “PLEASE WAIT” indication disappear then start the operation.
•Display

7
OCH528B 7
SPECIFICATIONS
4
kW
A
kW
K/min(CFM)
Pa(mmAq)
kW
dB
mm (inch )
mm (inch)
mm (inch)
mm (inch)
kg (lbs)
Service Ref.
Mode
Power supply(phase, cycle, voltage)
Input
Running current
External finish
Heat exchanger
Fan Fan(drive) oNo.
Fan motor output
Airflow(Low-Middle-High)
External static pressure
Booster heater
Operation control & Thermostat
Noise level(Low-Middle-High)
Unit drain pipe O.D.
Dimensions
Weight
W
D
H
INDOOR UNIT
PSA-RP100KA
Cooling
0.11
0.71
Heating
0.10
0.66
Single phase, 50Hz, 230V
Munsell 0.70Y 8.59/0.97
Plate fin coil
Centrifugal (direct) o1
0.16
25-28-30(893-1,000-1,071)
0(direct blow)
—
Remote controller & built-in
45-49-51
20 (13/16)
600 (23-5/8)
360 (14-11/64)
1,900 (74-13/16)
46 (102)
Cooling
0.06
0.40
Heating
0.06
0.40
Single phase, 50Hz, 230V
Munsell 0.70Y 8.59/0.97
Plate fin coil
Centrifugal (direct) o1
0.12
20-22-24 (714-786-857)
0 (direct blow)
—
Remote controller & built-in
40-42-44
20 (13/16)
600 (23-5/8)
360 (14-11/64)
1,900 (74-13/16)
46 (102)
PSA-RP71KA
kW
A
kW
K/min(CFM)
Pa(mmAq)
kW
dB
mm (inch)
mm (inch)
mm (inch)
mm (inch)
kg (lbs)
Service Ref.
Mode
Power supply(phase, cycle, voltage)
Input
Running current
External finish
Heat exchanger
Fan Fan(drive) oNo.
Fan motor output
Airflow(Low-Middle-High)
External static pressure
Booster heater
Operation control & Thermostat
Noise level(Low-Middle-High)
Unit drain pipe O.D.
Dimensions
Weight
W
D
H
INDOOR UNIT
Cooling
0.11
0.73
Heating
0.11
0.73
Single phase, 50Hz, 230V
Munsell 0.70Y 8.59/0.97
Plate fin coil
Centrifugal (direct) o1
0.16
25-28-31(893-1,000-1,107)
0 (direct blow)
—
Remote controller & built-in
45-49-51
20 (13/16)
600 (23-5/8)
360 (14-11/64)
1,900 (74-13/16)
46 (102)
PSA-RP125KA
kW
A
kW
K/min(CFM)
Pa(mmAq)
kW
dB
mm (inch)
mm (inch)
mm (inch)
mm (inch)
kg (lbs)
Service Ref.
Mode
Power supply(phase, cycle, voltage)
Input
Running current
External finish
Heat exchanger
Fan Fan(drive) oNo.
Fan motor output
Airflow (Low-Middle-High)
External static pressure
Booster heater
Operation control & Thermostat
Noise level (Low-Middle-High)
Unit drain pipe O.D.
Dimensions
Weight
W
D
H
INDOOR UNIT

98 9
OCH528B
kW
A
kW
K/min(CFM)
Pa(mmAq)
kW
dB
mm (inch)
mm (inch)
mm (inch)
mm (inch)
kg (lbs)
Service Ref.
Mode
Power supply(phase, cycle, voltage)
Input
Running current
External finish
Heat exchanger
Fan Fan(drive) x No.
Fan motor output
Airflow (Low-Middle-High)
External static pressure
Booster heater
Operation control & Thermostat
Noise level (Low-Middle-High)
Unit drain pipe O.D.
Dimensions
Weight
W
D
H
INDOOR UNIT
PSA-RP140KA
Cooling
0.11
0.73
Heating
0.11
0.73
Single phase, 50Hz, 230V
Munsell 0.70Y 8.59/0.97
Plate fin coil
Centrifugal (direct) o1
0.16
25-28-31(893-1,000-1,107)
0 (direct blow)
—
Remote controller & built-in
45-49-51
20 (13/16)
600 (23-5/8)
360 (14-11/64)
1,900 (74-13/16)
48 (106)

9
OCH528B 9
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB ( 0dB = 0.0002 µbar )
BAND CENTER FREQUENCIES, Hz
PSA-RP71KA
NOTCH
High
Middle
Low
SPL(dB)
44
42
40
LINE
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB ( 0dB = 0.0002 µbar )
BAND CENTER FREQUENCIES, Hz
PSA-RP100KA
PSA-RP125KA NOTCH
High
Middle
Low
SPL(dB)
51
49
45
LINE
NOISE CRITERION CURVES
5
1 m
1 m
Main unit
about 1.4 m
MICROPHONE
floor
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB ( 0dB = 0.0002 µbar )
BAND CENTER FREQUENCIES, Hz
PSA-RP140KA
NOTCH
High
Middle
Low
SPL(dB)
51
49
45
LINE

10 11
OCH528B
260
240
300 or more
PSA?|RP71/100/125/140KA
BH01B748
761
*1
*1. Service access allows for insertion of screw driver. *2. Adjustable
Front 1,000 or more
*2
Drain pipe
Gas pipe: 15.88(5/8F)
Liquid pipe: 9.52(3/8F)
Electrical parts box
Terminal block for indoor/outdoor connection
Knockout hole for bottom fixing 4- 10 hole
Knockout hole for under-piping (120×70 oval)
Knockout hole for under-piping
Front side
Rear side
Knockout hole for piping and wiring (140×80 oval)
Knockout hole for wiring 27 (Provided on both sides)
Knockout hole for refrigerant and drainage 90×60 oval (Provided on both sides)
Controller
Metal fixture against overturning
Knockout hole for branch duct
Front side
Rear side
240
10
38
38 15
111
77
115
70 260
*100 or more *100 or more
5 or more
140
20
24566
47
95
461
22
123
714
99
254
120
277
218
201
120
600
50
360
310
10
125
340
130 132
100
370
40
520
40
10 20
129 71
130 140 260
820
1900
599
181
834
524
30
105
20
590
480
110
261
PSA-RP71KA
PSA-RP100KA
PSA-RP125KA
PSA-RP140KA
Unit : mm (inch)
OUTLINES AND DIMENSIONS
6