Mitsubishi Electric Mr.Slim PMH-P25BA User manual

SERVICE MANUAL
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
No. OC333
INDOOR UNIT
REMOTE CONTROLLER
CONTENTS
1. REFERENCE MANUAL······································2
2. SAFETY PRECAUTION···································2
3. PART NAMES AND FUNCTIONS ···················4
4. SPECIFICATIONS············································6
5. NOISE CRITERION CURVES··························7
6. OUTLINES AND DIMENSIONS·······················8
7. WIRING DIAGRAM ··············································9
8. REFRIGERANT SYSTEM DIAGRAM ··················10
9. TROUBLESHOOTING ···································11
10. DISASSEMBLY PROCEDURE ······················22
11. PARTS LIST ···················································25
ON/OFF
TEMP.
July 2005
NOTE:
• This manual describes only
service data of the indoor
units.
Indoor unit
[Model names] [Service Ref.]
PMH-P25BA PMH-P25BA
PMH-P35BA PMH-P35BA
PMH-P50BA PMH-P50BA
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2
1REFERENCE MANUAL
Service Ref.
PU(H)-P·VGAA.UK
PU(H)-P·YGAA.UK
Service Manual No.
OC336
1-1. OUTDOOR UNIT’S SERVICE MANUAL
Series (Outdoor unit)
PU(H)-P·VGAA.UK
PU(H)-P·YGAA.UK
Manual No.
OCS02
1-2. TECHNICAL DATA BOOK
SAFETY PRECAUTION
2
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.
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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.
Gravimeter
Unit
[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.
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4
PART NAMES AND FUNCTIONS
3
● Remote 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)
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.
Guide vane
Air flow can be changed to horizontally
by moving the Guide vane to the left or right.
Air intake
Inhales air from room.
Filters
Remove dust and pollutants
from inhaled air.
Auto Air Swing Vane
Disperses airflow up and
down and adjusts the angle
of airflow direction.
Horizontal Air Outlet
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5
●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 indica-
tion (For max. 2minutes). Please wait until this “PLEASE WAIT” indication disappear then start the operation.
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6
SPECIFICATIONS
4
kW
A
A
kW
K/min(CFM)
Pa(mmAq)
dB
mm(in.)
mm(in.)
mm(in.)
mm(in.)
kg(lbs)
Service Ref.
Mode
Power supply(phase, cycle, voltage)
Input
Running current
Starting current
External finish
Heat exchanger
Fan Fan(drive) oNo.
Fan motor output
Airflow(Low-Medium2-Medium1-High)
External static pressure
Operation control & Thermostat
Noise level(Low-Medium2-Medium1-High)
Unit drain pipe I.D.
Dimensions
Weight
W
D
H
INDOOR UNIT
PMH-P35BA
Cooling
0.06
0.29
0.32
Heating
0.06
0.29
0.32
Single phase, 50Hz, 230V
Unit : Galvanized sheets with gray heat insulation, Grille munsell 0.98Y 8.99/0.63
Plate fin coil
Lineflow fan (direct) o1
0.028
7.0-8.0-9.0-10.0(247-282-318-353)
0(direct blow)
Remote controller & built-in
34-36-38-40
26(1)
UNIT : 854(33-5/8) PANEL : 1000(39-3/8)
UNIT : 395(15-9/16) PANEL : 470(18-1/2)
UNIT : 230(9-1/16) PANEL : 30(1-3/16)
UNIT : 14(31) PANEL : 3(6.6)
Cooling
0.04
0.19
0.21
Heating
0.04
0.19
0.21
Single phase, 50Hz, 230V
Unit : Galvanized sheets with gray heat insulation, Grille munsell 0.98Y 8.99/0.63
Plate fin coil
Lineflow fan (direct) o1
0.028
6.3-6.8-7.6-8.4(222-240-268-297)
0(direct blow)
Remote controller & built-in
29-31-33-35
26(1)
PMH-P25BA
kW
A
A
kW
K/min(CFM)
Pa(mmAq)
dB
mm(in.)
mm(in.)
mm(in.)
mm(in.)
kg(lbs)
Service Ref.
Mode
Power supply(phase, cycle, voltage)
Input
Running current
Starting current
External finish
Heat exchanger
Fan Fan(drive) oNo.
Fan motor output
Airflow(Low-Medium2-Medium1-High)
External static pressure
Operation control & Thermostat
Noise level(Low-Medium2-Medium1-High)
Unit drain pipe I.D.
Dimensions
Weight
W
D
H
INDOOR UNIT
UNIT : 854(33-5/8) PANEL : 1000(39-3/8)
UNIT : 395(15-9/16) PANEL : 470(18-1/2)
UNIT : 230(9-1/16) PANEL : 30(1-3/16)
UNIT : 14(31) PANEL : 3(6.6)
Cooling
0.06
0.29
0.32
Heating
0.06
0.29
0.32
Single phase, 50Hz, 230V
Unit : Galvanized sheets with gray heat insulation, Grille munsell 0.98Y 8.99/0.63
Plate fin coil
Lineflow fan (direct) o1
0.028
8.0-9.0-10.0-11.0(282-318-353-388)
0(direct blow)
Remote controller & built-in
36-38-40-42
26(1)
PMH-P50BA
kW
A
A
kW
K/min(CFM)
Pa(mmAq)
dB
mm(in.)
mm(in.)
mm(in.)
mm(in.)
kg(lbs)
Service Ref.
Mode
Power supply(phase, cycle, voltage)
Input
Running current
Starting current
External finish
Heat exchanger
Fan Fan(drive) oNo.
Fan motor output
Airflow(Low-Medium2-Medium1-High)
External static pressure
Operation control & Thermostat
Noise level(Low-Medium2-Medium1-High)
Unit drain pipe I.D.
Dimensions
Weight
W
D
H
INDOOR UNIT
UNIT : 854(33-5/8) PANEL : 1000(39-3/8)
UNIT : 395(15-9/16) PANEL : 470(18-1/2)
UNIT : 230(9-1/16) PANEL : 30(1-3/16)
UNIT : 14(31) PANEL : 3(6.6)
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7
NOISE CRITERION CURVES5
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 re 0.002 µBAR
BAND CENTER FREQUENCIES, Hz
PMH-P35BA High
NOTCH
Medium1
Medium2
Low
40
SPL(dB)
38
36
34
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 re 0.002 µBAR
BAND CENTER FREQUENCIES, Hz
PMH-P25BA High
NOTCH
Medium1
Medium2
Low
35
SPL(dB)
33
31
29
LINE
Ambient temperature 27:
Test conditions are based on JIS Z8731
UNIT
1.5m
MICROPHONE
CEILING
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 re 0.002 µBAR
BAND CENTER FREQUENCIES, Hz
PMH-P50BA High
NOTCH
Medium1
Medium2
Low
42
SPL(dB)
40
38
36
LINE
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8
6OUTLINES AND DIMENSIONS
Details of fresh air intake hole
Knock out
4-{2.8 Burring hole
Flesh air intake hole
110
230
235 or more
110
suspension bolt(M10 or W3/8)
Panel(grille):PMP-40BM
Installation space required around indoor unit
mounting plate
176
Panel(grille):PMP-40BM
Lower view
60 40
200600200
Top
Air outlet(lower)
46
43
2828
20 26
20
53
69 247
30
Right side
outer line of grille
center of unit
75926 811 suspension bolt pitch74.5 960 ceiling opening20 20
1000 outer side of grille
17.517.5
45
340 suspension bolt pitch
45
430 ceiling opening
470 outer side of grille
20 20
74.5
Terminal block for indoor/outdoor connection
Terminal block for remote controller
812
96
Left side
Front drain pan
elect box
Drainage pipe PVC pipe:VP-20[O.D.{25]
Refrigerant pipe(gas)
Refrigerant pipe(liquid)
ceiling panel
drain pan ceiling
panel
PVC pipe:VP-20[O.D.{25(1")]
O.D.{35
O.D.{12.7(1/2") O.D.{15.88(5/8")
O.D.{6.35(1/4") O.D.{9.52(3/8")
PMH-P50BA PMH-P35BA
PMH-P25BA
Drainage pipingGas pipe
Liquid pipe pipe cover
Refrigerant piping
1000 outer side of grille
470 outer side of grille
{50
(56)
230
(96)
(20)
(10)
302
254
198
141 759
395
90-
{
122
{
100
108
250 288.5
same line
PMH-P25BA
PMH-P35BA
PMH-P50BA
Unit : mm
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9
PMH-P25BA
PMH-P35BA
PMH-P50BA
65432
5
1
MF
FAN
(WHT)
LED1 CN90 CN32
I.B
LED2
LED3 CN41
2 1
REMOTE
CONTROLLER
CN22
(BLU)
BLU BLU
TB5
TB4S1
S2
S3
TB6
R.B
TRANSMISSION WIRES DC12V
2
112
2
1TH1
3
2
1DS
D.SENSOR
CN31
(WHT)
INTAKE
CN20
(RED)
BLK
BLK
BLK
BLK
2
1TH2
LIQUID
CN21
(WHT)
BLK
BLK
2
1TH5
PIPE
CN29
(BLK)
BLK
BLK
VANE
CN6V
(WHT)
6
5
4
3
2
1
1
2
3
4
5
MV
BRN
RED
ORN
YLW
GRN
CN2L
See fig :w1
SW1SWE
ON
OFF
SW2
J24 J23 J22 J21 J15 J14 J13 J12 J11
3
1
1
3
5
DP X1
X1
D.U.M
CNP
(YLW)
POWER
CN03
(RED)
FUSE ZNR
T
BRN
ORN
YLW
BLU
BLU
TO OUTDOOR UNIT
MODELS
SW1
<w1>
PMH-P25/35/50BA
Manufacture
J11 J12 J13 J14 J15
Service board
SW2
PMH-P25BA
J21 J22 J23 J24
ON
OFF
1234
12345ON
OFF
PMH-P35BA
J21 J22 J23 J24
ON
OFF
1234
PMH-P50BA
J21 J22 J23 J24
ON
OFF
1234
NOTES:
1.Since the outdoor side electric wiring may change be sure
to check the outdoor unit electric wiring for servicing.
2.Indoor and outdoor connecting wires are made with polarities,
make wiring matching terminal numbers (S1, S2, S3).
3.Symbols used in wiring diagram above are,
: Connector, : Terminal (block).
Please set the voltage using the remote controller.
For the setting method, please refer to the indoor
unit Installation Manual.
SYMBOL
[LEGEND]
I.B INDOOR CONTROLLER BOARD
CN2L CONNECTOR(LOSSNAY)
CN32 CONNECTOR(REMOTE SWITCH)
R.B
WIRED REMOTE CONTROLLER BOARD
DP DRAIN-UP MACHINE
DS DRAIN SENSOR
MF FAN MOTOR
MV
TB4 VANE MOTOR TERMINAL BLOCK
(INDOOR / OUTDOOR CONNECTING LINE)
TB5,TB6 TERMINAL BLOCK
(REMOTE CONTROL TRANSMISSION LINE)
TH1 ROOM TEMP, THERMISTOR
(0:/15k", 25:/5.4k"DETECT)
TH2 PIPE TEMP, THERMISTOR / LIQUID
(0:/15k", 25:/5.4k"DETECT)
TH5 COND, / EVA, TEMP, THERMISTOR
(0:/15k", 25:/5.4k"DETECT)
CN41 CONNECTOR(HA TERMINAL-A)
FUSE FUSE(6.3A , 250V)
LED1 POWER SUPPLY(I.B)
LED2 POWER SUPPLY(R.B)
LED3 TRANSMISSION(INDOOR-OUTDOOR)
SW1 JUMPER WIRE(MODEL SELECTION)
SW2 JUMPER WIRE(CAPACITY CORD)
SWE SWITCH(EMERGENCY OPERATION)
T TRANSFORMER
X1 RELAY(DRAIN PUMP)
ZNR VARISTOR
NAME
7WIRING DIAGRAM
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10
Unit : mm
Pipe temperature
thermistor/liquid
(TH2)
Distributor
with strainer
#50
Condenser/evaporator
temperature thermistor
(TH5)
Room temperature
thermistor (TH1)
Refrigerant flow in cooling
Refrigerant flow in heating
Strainer
#50
Strainer
#50
Heat exchanger Refrigerant GAS pipe connection
(Flare)
Refrigerant LIQUID pipe connection
(Flare)
8REFRIGERANT SYSTEM DIAGRAM
PMH-P25BA
PMH-P35BA
PMH-P50BA
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