Mitsubishi Electric PEFY-WP VMS1

Air-Conditioners
2013
TECHNICAL & SERVICE MANUAL
Models
PEFY-WP15VMS1-E
PEFY-WP20VMS1-E
PEFY-WP25VMS1-E
PEFY-WP32VMS1-E
PEFY-WP40VMS1-E
PEFY-WP50VMS1-E
Safety Precautions
Read before installation and performing electrical work
ŒThoroughly read the following safety precautions prior to installation.
ŒObserve these safety precautions for your safety.
ŒThis equipment may have adverse effects on the equipment on the same power supply system.
ŒContact the local power authority before connecting to the system.
Symbol explanations
WARNING
This symbol indicates that failure to follow the instructions exactly as stated poses the risk of serious injury or death.
CAUTION
This symbol indicates that failure to follow the instructions exactly as stated poses the risk of serious injury or damage to the unit.
Indicates an action that must be avoided.
Indicates important instructions.
Indicates a parts that requires grounding.
Indicates that caution must be taken with rotating parts. (This symbol is on the main unit label.) <Color: Yellow>
Indicates that the parts that are marked with this symbol pose a risk of electric shock. (This symbol is on the main
unit label.) <Color: Yellow>
WARNING
Carefully read the labels affixed to the main unit.
WARNING
Do not use refrigerant other than the type indicated in the
manuals provided with the unit and on the nameplate.
Only use accessories (i.e., air cleaners, humidifiers, electric
heaters) recommended by Mitsubishi Electric.
Doing so may cause the unit or pipes to burst, or result in explosion
or fire during use, during repair, or at the time of disposal of the unit.
It may also be in violation of applicable laws.
MITSUBISHI ELECTRIC CORPORATION cannot be held
responsible for malfunctions or accidents resulting from the
use of the wrong type of refrigerant.
Do not make any modifications or alterations to the unit.
Consult your dealer for repair.
Improper repair may result in water leakage, electric shock,
or fire.
Do not touch the heat exchanger fins with bare hands.
Ask your dealer or a qualified technician to install the unit.
The fins are sharp and pose a risk of cuts.
Improper installation by the user may result in water leakage, electric shock, or fire.
Properly install the unit according to the instructions in the
Installation Manual.
Properly install the unit on a surface that can withstand its weight.
Improper installation may result in water leakage, electric
shock, or fire.
Unit installed on an unstable surface may fall and cause injury.
Only use specified cables. Securely connect each cable so
that the terminals do not carry the weight of the cable.
Have all electrical work performed by an authorized electrician according to the local regulations and the instructions
in this manual. Use a dedicated circuit.
Improperly connected cables may produce heat and start a fire.
Insufficient power supply capacity or improper installation
of the unit may result in malfunctions of the unit, electric
shock, or fire.
Take appropriate safety measures against wind gusts and
earthquakes to prevent the unit from toppling over.
Improper installation may cause the unit to topple over and
cause injury or damage to the unit.
HWE12090
i
GB
WARNING
Keep electrical parts away from water.
After completing the service work, check for a refrigerant
leak.
Wet electrical parts pose a risk of electric shock, smoke, or
fire.
If leaked refrigerant is exposed to a heat source, such as a
fan heater, stove, or electric grill, toxic gases will be generated.
Securely attach the control box cover.
If the cover is not installed properly, dust or water may infiltrate and pose a risk of electric shock, smoke, or fire.
Do not try to defeat the safety features of the unit.
Only use the type of refrigerant that is indicated on the unit
when installing or relocating the unit.
Forced operation of the pressure switch or the temperature
switch by defeating the safety features for these devices, or
the use of accessories other than the ones that are recommended by Mitsubishi Electric may result in smoke, fire, or
explosion.
Infiltration of any other types of refrigerant or air into the unit
may adversely affect the refrigerant cycle and may cause
the pipes to burst or explode.
Consult your dealer for proper disposal method.
Consult your dealer or a qualified technician when moving
or reinstalling the unit.
Improper installation may result in water leakage, electric
shock, or fire.
Precautions for handling units for use with water
CAUTION
Do not use the existing water piping.
Only use water.
Store the piping materials indoors, and keep both ends of
the pipes sealed until immediately before installation. Keep
the joints wrapped in plastic bags. If dust or dirt enters the
water circuit, it may damage the heat exchanger and cause
water leakage.
Only use clean water as a refrigerant. The use of water outside the specification may damage the refrigerant circuit.
HWE12090
ii
GB
CONTENTS
I Features
[1] Features.................................................................................................................................... 1
II Components and Functions
[1] Components and Functions...................................................................................................... 2
III Specfications
[1] Specifications............................................................................................................................ 3
1.Specfications .......................................................................................................................... 3
2.Electrical component specifications........................................................................................ 5
IV Outlines and Dimensions
[1] Outlines and Dimensions.......................................................................................................... 6
V Wiring Diagram
[1] Wiring Diagram ......................................................................................................................... 8
VI Refrigerant System Diagram
[1] Refrigerant system diagram.................................................................................................... 10
VII Troubleshooting
[1] Troubleshooting ...................................................................................................................... 11
1.Check methods..................................................................................................................... 11
2.DC fan motor (fan motor/indoor control board)..................................................................... 13
3.Address switch setting .......................................................................................................... 14
4.Voltage test points on the control board ............................................................................... 15
5.Dipswitch setting (Factory setting)........................................................................................ 16
6.Instructions for debris removal operation.............................................................................. 18
7.Instructions for the air vent operation ................................................................................... 18
VIII Disassembly Procedure
[1] Disassembly Procedure.......................................................................................................... 19
1.Control box ........................................................................................................................... 19
2.Thermistor (Intake air) .......................................................................................................... 20
3.Drainpan ............................................................................................................................... 21
4.Thermistor (Water outlet) (Water inlet) ................................................................................. 22
5.Fan and fan motor ................................................................................................................ 23
6.Bearing ................................................................................................................................. 24
7.Heat exchanger .................................................................................................................... 25
8.Drain pump ........................................................................................................................... 26
9.Float Switch .......................................................................................................................... 27
HWE12090
GB
[ I Features ]
I Features
[1] Features
Model
Cooling capacity/Heating capacity
kW
HWE12090
PEFY-WP15VMS1-E
1.7/1.9
PEFY-WP20VMS1-E
2.2/2.5
PEFY-WP25VMS1-E
2.8/3.2
PEFY-WP32VMS1-E
3.6/4.0
PEFY-WP40VMS1-E
4.5/5.0
PEFY-WP50VMS1-E
5.6/6.3
-1-
GB
[ II Components and Functions ]
II Components and Functions
[1] Components and Functions
1. Indoor (Main) Unit
(A)
(A)
Air
(A)
HWE12090
-2-
GB
[ III Specfications ]
III Specfications
[1] Specifications
1. Specfications
Model
PEFYWP15VMS1-E
Power supply
Cooling capacity
Voltage
V
220-240
Frequency
Hz
50/60
*1
Current consumption
*2
1.7
2.2
2.8
kW
1.9
2.5
3.2
Cooling
kW
0.050
0.051
0.060
Heating
kW
0.030
0.031
0.040
Cooling
A
0.44
0.49
0.51
Heating
A
0.33
0.38
0.40
External finish (Munsel No.)
Dimensions
Galvanized
Height
mm
200
Width
mm
790
Depth
mm
700
kg
Net weight
19
Heat exchanger
Fan
Motor
Type
Sirocco fan x 2
Airflow rate
(Low-Mid-High)
m3/min
5.0-6.0-7.0
5.5-6.5-8.0
5.5-7.0-9.0
External static
pressure
Pa
5/15/35/50
5/15/35/50
5/15/35/50
Output
kW
0.096
PP Honeycomb fabric (washable)
Inlet
in
Rc3/4 screw
Outlet
in
Rc3/4 screw
Drain pipe dimensions
Operating noise
(Low-Mid-High)
20
Cross fin (Aluminium fin and cupper tube)
Air filter
Diameter of
water pipe
PEFYWP25VMS1-E
kW
Heating capacity *1
Power consumption *2
PEFYWP20VMS1-E
mm [in.]
5Pa
dB (A)
O.D. 32 [1-1/4]
22-24-26
22-25-28
23-25-29
15Pa
22-24-28
22-25-29
24-26-30
35Pa
24-26-29
25-27-30
25-28-31
50Pa
24-27-30
25-28-32
25-29-33
*1 <Cooling> Indoor temperature: 27°CDB/19°CWB (81°FDB/66°FWB Outdoor temperature: 35°CDB (95°FDB)
<Heating> Indoor temperature: 20°CDB (68°FDB) Outdoor temperature: 7°CDB/6°CWB (45°FDB/43°FWB)
*2 The external static pressure is set to 15Pa at factory shipment.
HWE12090
-3-
GB
[ III Specfications ]
Model
PEFY-WP32VMS1-E
Power supply
Voltage
V
220-240
Frequency
Hz
50/60
Cooling capacity *1
Heating capacity
Current consumption
3.6
4.5
5.6
kW
4.0
5.0
6.3
Cooling
kW
0.071
0.090
0.090
Heating
kW
0.051
0.070
0.070
Cooling
A
0.61
0.73
0.77
Heating
A
0.50
0.62
0.66
External finish (Munsel No.)
Dimensions
Galvanized
Height
mm
Width
mm
Depth
mm
Net weight
200
990
Motor
kg
25
Type
Sirocco fan x 3
3/min
Sirocco fan x 4
Airflow rate
(Low-Mid-High)
m
8.0-9.5-11.0
9.5-11.0-13.0
12.0-14.0-16.5
External static
pressure
Pa
5/15/35/50
5/15/35/50
5/15/35/50
Output
kW
0.096
PP Honeycomb fabric (washable)
Inlet
in
Rc3/4 screw
Outlet
in
Rc3/4 screw
Drain pipe dimensions
Operating noise
(Low-Mid-High)
27
Cross fin (Aluminium fin and cupper tube)
Air filter
Diameter of
water pipe
1190
700
Heat exchanger
Fan
PEFY-WP50VMS1-E
kW
*1
Power consumption
PEFY-WP40VMS1-E
mm [in.]
5Pa
dB (A)
O.D. 32 [1-1/4]
26-29-32
29-31-34
29-32-35
15Pa
28-30-33
30-32-35
30-33-36
35Pa
30-32-35
31-34-37
31-35-39
50Pa
31-33-36
32-34-38
32-36-40
*1 <Cooling> Indoor temperature: 27°CDB/19°CWB (81°FDB/66°FWB Outdoor temperature: 35°CDB (95°FDB)
<Heating> Indoor temperature: 20°CDB (68°FDB) Outdoor temperature: 7°CDB/6°CWB (45°FDB/43°FWB)
HWE12090
-4-
GB
[ III Specfications ]
2. Electrical component specifications
Component
Symbol
Room temperature
thermistor
TH21
Water inlet pipe thermistor
TH22
Water outlet pipe
thermistor
TH23
Fuse
FUSE
PEFYWP15VMS1-E
, 10°C/9.6k , 20°C/6.3k , 25°C/5.4k , 30°C/4.3k , 40°C/3.0k
Resistance 0°C/15k
, 10°C/9.6k , 20°C/6.3k , 25°C/5.4k , 30°C/4.3k , 40°C/3.0k
Resistance 0°C/15k
, 10°C/9.6k , 20°C/6.3k , 25°C/5.4k , 30°C/4.3k , 40°C/3.0k
250V 6.3A
8-pole, Output 96W SIC-70CW-D8114-1
Power supply terminal
block
TB2
Transmission terminal
block
TB5
TB15
Symbol
Room temperature
thermistor
TH21
Water inlet pipe thermistor
TH22
Water outlet pipe
thermistor
TH23
Fuse
FUSE
Fan motor
) 330V 30A
(1, 2), (M1, M2, S) 250V 20A
Open/short detection
Initial contact resistance 500 m
PEFY-WP32VMS1-E
or less
PEFY-WP40VMS1-E
PEFY-WP50VMS1-E
Resistance 0°C/15k
, 10°C/9.6k , 20°C/6.3k , 25°C/5.4k , 30°C/4.3k , 40°C/3.0k
Resistance 0°C/15k
, 10°C/9.6k , 20°C/6.3k , 25°C/5.4k , 30°C/4.3k , 40°C/3.0k
Resistance 0°C/15k
, 10°C/9.6k , 20°C/6.3k , 25°C/5.4k , 30°C/4.3k , 40°C/3.0k
250V 6.3A
8-pole, Output 96W SIC-70CW-D896-2
Power supply terminal
block
TB2
Transmission terminal
block
TB5
TB15
HWE12090
(L, N,
DS
Component
Drain float switch
PEFYWP25VMS1-E
Resistance 0°C/15k
Fan motor
Drain float switch
PEFYWP20VMS1-E
DS
(L, N,
) 330V 30A
(1, 2), (M1, M2, S) 250V 20A
Open/short detection
Initial contact resistance 500 m
-5-
or less
GB
25
A
2×E-ø2.9
2 Water pipe(To HBC unit)
Rc3/4 screw
57
B
C
D
9
1000 1060
H
7
11
70
270
860
800
9
G
116
270
5
49
660
600
F
7
E
10
23
10
Air
outlet
100
2×2-ø2.9
1 Water pipe(From HBC unit)
Rc3/4 screw
PEFY-WP15VMS1-E
PEFY-WP20VMS1-E 700 752 798 660
PEFY-WP25VMS1-E
PEFY-WP32VMS1-E
900 952 998 860
PEFY-WP40VMS1-E
PEFY-WP50VMS1-E 1100 1152 1198 1060
Model
D (Duct)
20
100×(E-1)=F
30
150(Duct)
23
25
64
102
-6100
900
700
500
J
24
20
16
K
790
M
1239 1190
1039 990
839
L
A
90
M
Control box
Suspension bolt hole
4-14×30 Slot
C
L
(To HBC unit)
2 Watetr pipe
Rc3/4 screw
(From HBC unit)
1 Water pipe
Terminal bed(Transmission)
Terminal bed(Power source)
Drain pump
Drain pipe(O.D.ø32)
(Spontaneous draining)
Drain pipe
(O.D.ø32)
700
677
625(Suspension bolt pitch)
Air
inlet
B (Suspension bolt pitch)
23
88
100×H=J
88
20
12
G
37
(Actual length)
65 -100
100
157.5
Knockout hole ø27
(Transmission wiring)
37
Drain hose (I.D. 32)
<accessory>
Less than 300mm
Knockout hole ø27
(Power source wiring)
K-ø2.9
Air filter
100
HWE12090
20
12
Note
10
Provide an access door for maintenance at the bottom.
48
(B)
170
Space required for service and maintenance.
200
(A)
Less than 550mm
15
[ IV Outlines and Dimensions ]
IV Outlines and Dimensions
[1] Outlines and Dimensions
1. PEFY-WP15, 20, 25, 32, 40, 50VMS1-E
Unit : mm
1 Use M10 screw for the suspension bolt (field supply).
2 Keep the service space for the maintenance at the bottom.
3 This chart indicates for PEFY-WP32, 40VMS1-E models, which has 3 fans.
PEFY-WP15, 20, 25VMS1-E models have 2 fans.
PEFY-WP50VMS1-E models have 4 fans.
4 In case an inlet duct is used, remove the air filter (supply with the unit), then install the filter (field supply) at
suction side.
GB
Fig.3
B
Fig.1
A
Electric box
Ceiling
Ceiling
Intake air
Ceiling beam
Min.300mm
Model
N
P
Q
R
PEFY-WP15VMS1-E
PEFY-WP20VMS1-E 700 50~150 800 1300
PEFY-WP25VMS1-E
PEFY-WP32VMS1-E
900 150~250 1000 1500
PEFY-WP40VMS1-E
PEFY-WP50VMS1-E 1100 250~350 1200 1700
Access door 3
Supply air
Access door 2 (450×450)
Electric box
Intake air
Ceiling beam
Access door 2
(450×450)
Min.10mm
Supply air
Min.10mm
50
50~150
700
450
Maintenance access space
100~200
Min.300mm
Fig.4 (Viewed from the direction of the arrow B)
777
Access door 3
Bottom of
indoor unit
Electric box
Access door 1
(450×450)
475
100~200
Min.300mm
Maintenance access space
450
Fig.2 (Viewed from the direction of the arrow A)
450
Bottom of indoor unit
Access door 1
(450×450)
Electric box
475
700
(2) When a space of less than 300mm is available below the unit between the unit and the ceiling.
(At least 20mm of space should be left below the unit as shown in Fig.3.)
·Create access door 1 diagonally below the electric box and access door 3 below the unit as shown in Fig.4.
or
·Create access door 4 below the electric box and the unit as shown in Fig.5.
(1) When a space of 300mm or more is available below the unit between the unit and the ceiling. (Fig.1)
·Create access door 1 and 2 (450x450mm each) as shown in Fig.2.
(Access door 2 is not required if enough space is available below the unit for a maintenance worker to work in.)
Min.20mm
P
450
Q
450
N
450
N
50
-7-
R
777
Access door 4
Bottom of
indoor unit
Electric box
700
Fig.5 (Viewed from the direction
of the arrow B)
50
Min.300mm
N
HWE12090
Maintenance access space
50
[Maintenance access space]
Secure enough access space to allow for the maintenance, inspection, and replacement of the motor, fan, drain pump, heat exchanger,
and electric box in one of the following ways.
Select an installation site for the indoor unit so that its maintenance access space will not be obstructed by beams or other objects.
[ IV Outlines and Dimensions ]
Unit : mm
GB
HWE12090
-8-
6 5 4
2
3
8
7
6 5 4
9 0 1
2
3
EF0 12
D
3
C
4
B
5
A
9 876
CN43
4
3
2
1
SW14
(Connection No.)
SWC
SWA SWB
SW12
SW11
(10ths digit) (1s digit)
8
7
SW1
9 0 1
A. B.
CN82
8
7
6
5
4
3
2
1
CN32
1
2
TB15
TO OUTDOOR UNIT
TO MA REMOTE
BC CONTROLLER
CONTROLLER
REMOTE CONTROLLER
TB5
M1 M2 S(SHIELD)
CN51
LED2
CN41
1
CN42
(Red)
CN81
(Red)
(Green)
CN52
1 CN3A
(Blue)
3
1 2 3 4
1 2 3 4 5 6 7 8
t°
TH22 TH23
FS
1 2 3 4
1 2 3 4
t°
CN4F
8
ON
SWE
OFF
SW3
CN44
CN100
4 5
1 2 3 4 5
IT terminal
*A
CN27 (Red)
CN90
SW4
t°
LED1
CN20 (Red)
TH21
1 2
ZNR01
U
1
M
1~
3
(Blue)
5
1 CNP
X1
3
Drainpump
FUSE
1
TB2
L
N
L1
3
CN51
CN100
4 5
8
1
1
CN100
(Green)
CN52
4 5
1 2 3 4 5
1 2 3 4 5
1
IT terminal
(PAC-IT52AD-E)
IT terminal
(PAC-IT51AD-E)
POWER SUPPLY
~220, 230, 240V
50, 60Hz
BREAKER (16A)
FUSE (16A)
PULL BOX
TO NEXT INDOOR UNIT
L1: only PEFY-WP50VMS1-E
In connecting optional IT terminal,
use either CN51 or CN52 which is
not connected.
Be careful for connector colors.
*A
NOTE: Symbols used in wiring diagram above are,
(HEAVY DOTTED LINE):FIELD WIRING
(THIN DOTTED LINE) :OPTIONAL PARTS
Fan motor
MS
3~
7 6 5 4
CNMF
U
CN2M
(Blue)
ZNR02
DSA
2 1
DC310~340V
Rectify circuit
SW2
CND
(Black)
I. B.
INSIDE SECTION OF CONTROL BOX
8
[ V Wiring Diagram ]
V Wiring Diagram
[1] Wiring Diagram
1. PEFY-WP15, 20, 25, 32, 40, 50VMS1-E
GB
[ V Wiring Diagram ]
Table.1 SYMBOL EXPLANATION
SYMBOL
NAME
SYMBOL
NAME
SYMBOL
NAME
I.B.
Indoor control board
CN32
Connector (Remote switch)
SW3
(I.B.)
Switch (function setting)
A.B.
Address board
CN41
Connector (HA terminal-A)
SW4
(I.B.)
Switch (function setting)
TB2
Power supply terminal block
CN51
Connector (Centralized control)
SWE
(I.B.)
Connector (emergency operation)
TB5
Transmission terminal block
CN52
Connector (Remote display)
SW1
(A.B.)
Switch (function setting)
TB15
Transmission terminal block
CN90
Connector (Wireless)
SW11
(A.B.)
Switch (For setting the 1's digit
in the address)
FUSE
Fuse AC 250V 6.3A
CN100
Connector (IT terminal)
SW12
(A.B.)
Switch (For setting the 10's
digit in the address)
Float switch
SW14
(A.B.)
Switch (connection No.setting)
ZNR01,
02
Varistor
FS
DSA
Arrester
TH21
Thermistor (inlet air)
SWA
(A.B.)
Switch (static pressure setting)
X1
Aux. relay
TH22
Thermistor (water in)
SWB
(A.B.)
Switch (function setting)
L1
AC reactor (Power factor improvement)
TH23
Thermistor (water out)
SWC
(A.B.)
Switch (static pressure setting)
Connector (Damper)
SW2
(I.B.)
Switch (capacity code setting)
CN27
Note
1 Wiring to TB2, TB5, and TB15 indicated by the double-dashed lines is on-site work.
2
HWE12090
terminal block,
connector.
-9-
GB
[ VI Refrigerant System Diagram ]
VI Refrigerant System Diagram
[1] Refrigerant system diagram
(G)
(A)
(B)
(D)
(E)
(C)
(F)
(H)
(A)
Water outlet thermistor TH23
(B)
Water outlet
(C)
Water inlet
(D)
Screw connections
(E)
Water inlet thermistor TH22
(F)
Heat exchanger
(G)
Manual air purge valve
(H)
Room temperature thermistor TH21
Capacity
PEFY-WP15, 20, 25, 32, 40, 50VMS1-E
Water outlet
Rc3/4 screw
Water inlet
Rc3/4 screw
HWE12090
- 10 -
GB
[ VII Troubleshooting ]
VII Troubleshooting
[1] Troubleshooting
1. Check methods
1. Component and check points
(1) Thermistor
ŒRoom temperature thermistor (TH21)
ŒWater inlet thermistor (TH22)
ŒWater outlet thermistor (TH23)
Disconnect the connector and measure the resistance between terminals with a tester.
(Ambient temperature 10°C - 30°C)
Normal
4.3k
Abnormal
- 9.6k
Open or short
(Refer to the thermistor characteristic graph below.)
1) Thermistor characteristic graph
Low-temperature thermistor
ŒRoom temperature thermistor (TH21)
ŒWater inlet pipe thermistor (TH22)
ŒWater outlet pipe thermistor (TH23)
ŒDrain sensor (DS)
50
ŒThermistor R0 = 15 k
3%
ŒMultiplier of B = 3480 k
2%
0°C
10°C
20°C
25°C
30°C
40°C
1
273+t
1 )}
273
30
(B)
Rt = 15 exp { 3480(
40
15k
9.6k
6.3k
5.2k
4.3k
3.0k
20
(A) Temperature
(°C)
(B) Resistance
(k )
10
0
-20
-10
0
10
20
30
40
50
(A)
(2) Fan motor (CNMF)
Refer to the page on "DC fan motor (fan motor/indoor control board)."
(3) Drain-up mechanism
Measure the resistance between the terminals with a tester.
(coil temperature 20°C)
Normal
Abnormal
1
3
HWE12090
340
Open or short
- 11 -
GB
[ VII Troubleshooting ]
(4) Drain float switch (CN4F)
Disconnect the connector, and measure the resistance between terminals with a tester.
(A)
1
2
3
4
(B)
(C)
(A)
Moving part
(B)
Switch
(C)
Magnet
(A)
HWE12090
Position of the moving part
Normal
Abnormal
Up
Short
(any position but short)
Down
Open
(any position but open)
- 12 -
GB
[ VII Troubleshooting ]
2. DC fan motor (fan motor/indoor control board)
1. CAUTION
ŒA high voltage is applied to the connector for connection to the fan motor (CNMF).
ŒDo not unplug the connector CNMF with the unit energized to avoid damage to the indoor control board and fan motor.
2. Troubleshooting
ŒSymptom: Indoor unit fan does not run.
Check fan motor connector contact
(CNMF).
Is the fan motor connector
(CNMF) fully inserted?
No
Fix the connection.
Yes
Check the power supply.
Measure the voltage at the indoor control board.
310 - 340VDC (same with the voltage between fan connector 1 (+) and 4(-))
Power supply voltage
VDC
15VDC (same with the voltage between fan connector 5 (+) and 4(-))
1 - 6.5VDC (same with the voltage between fan connector 6 (+) and 4(-))
[Values for Vsp are the values that are measured with the fan motor in operation.
Vsp is 0V when the fan motor is stopped.]
Is the voltage within the
normal range?
No
Replace the indoor control board.
Yes
Check the fan motor position thermistor signal.
Get the motor to make a full rotation or more, and measure the voltage at the test point
VFG.
(same with the voltage between fan connector 7 (+) and 4(-))
Are 0VDC and 15VDC
displayed alternately?
No
Replace the motor.
Yes
Replace the indoor control board.
HWE12090
- 13 -
GB
[ VII Troubleshooting ]
3. Address switch setting
Make sure that power to the unit is turned off.
(A)
(B)
ON
OFF
ON
OFF
2
1
(A)
Indoor unit control board
(B)
Factory setting (all models)
1. When using an ME remote controller, set the address with the rotary switches (SW11, SW12).
ŒAddress setting is not required when the unit remote controller is used.
On-site address setting is required for the indoor units to run.
2. Address settings vary in different systems.
Refer to the section on address setting in the outdoor unit installation manual.
3. Address is set with a combination of SW12 (10's digit) and SW11 (1's digit).
To set the address to "3," set SW12 to "0" and SW11 to "3."
To set the address to "25," set SW 12 to "2" and SW 11 to "5."
HWE12090
- 14 -
GB
[ VII Troubleshooting ]
4. Voltage test points on the control board
1. PEFY-P15, 20, 25, 32, 40, 50, 63VMS1(L)-E
Fuse
CND
CNP
С25(*1)
CNMF
C951(*1)
Fuse
Fuse(AC 250V 6.3A)
CND
Power supply voltage (220 240VAC)
CN2M
For M-NET transmission cable
connection (24 - 30VDC)
SWE
Emergency operation
SW2
Capacity setting
SW4
Function setting
CN42
For address board connection
SW3
Function setting
CN81
For address board connection
CN32
Remote start/stop adapter
CN3A
For MA remote controller cable
connection
(10 - 13 VDC (Between 1 and 3.))
CN52
Remote display
PC941(*1) CN51
CN2M
CN41
JAMA standard HA terminal A
CN44
Thermistor (water inlet/water outlet temperature)
CN4F
Float thermistor
CN20
Thermistor (Inlet temperature)
CN3C
Indoor-outdoor transmission
(0 - 24VDC)
LED1
SWE
SW2
CN3C
CN20
SW4
CN42
CN4F
CNMF Fan motor output
1 - 4: 310 - 340 VDC
5 - 4: 15 VDC
6 - 4: 0 - 6.5 VDC
7 - 4: Stop 0 or 15 VDC
Run 7.5 VDC
(0 - 15 pulse)
CNP
SW3
CN44
CN81
CN41
CN32
CN51
CN52
LED2 CN3A
HWE12090
Centralized control
Drain-up mechanism output
(200VAC)
(*1)
VFG Voltage on the (-) side of PC941
and C25
(Same with the voltage between 7
(+) and 4 (-) of CNMF)
VCC Voltage between the C25 pins
15 VDC
(Same with the voltage between 5
(+) and 4 (-) of CNMF)
Vsp Voltage between the C951 pins
0VDC (with the fan stopped)
1 - 6.5VDC (with the fan in operation)
(Same with the voltage between 6
(+) and 4 (-) of CNMF)
CN60
- 15 -
GB
[ VII Troubleshooting ]
5. Dipswitch setting (Factory setting)
1. Function setting
(1) SW1
Switch position
Function
Switch setting
ON
OFF
1
Active Thermistor (Intake air
thermistor)
Built-in thermistor on the remote
controller
Indoor unit
2
Filter clogging detection
Available
Unavailable
3
Filter life
2500 hr
100 hr
4
Outdoor air intake
Enabled
Disabled
5
Remote display
Thermo-ON signal
Fan output
6
Humidifier operation
During heating mode
During heating operation
7
Fan speed
Low
Very low
8
Fan speed at heating Thermo-OFF Preset fan speed
Follows the setting of SW1-7
9
Auto restart after power failure
Enabled
Disabled
10
Power start/stop
Enabled
Disabled
1) Adress board
Factory setting
(2) SW3
Switch position
Function
Switch setting
ON
1
Unit type
Cooling only
OFF
Heat pump
2
-
-
-
3
-
-
-
4
-
-
-
5
-
-
-
6
-
-
-
7
-
-
-
8
Heating 4-deg up
Disabled
Enabled
1) Indoor control board
Dipswitch settings must be made while the unit is stopped.
Factory setting
HWE12090
- 16 -
GB
[ VII Troubleshooting ]
2. Capacity code setting
(1) SW2
1) Indoor control board
Dipswitch settings must be made while the unit is stopped.
Factory setting
The switches are set to correspond to the unit capacity.
PEFY-WP15VMS1-E
PEFY-WP20VMS1-E
PEFY-WP40VMS1-E
PEFY-WP50VMS1-E
PEFY-WP25VMS1-E
PEFY-WP32VMS1-E
3. Model setting
(1) SW4
1) Indoor control board
Dipswitch settings must be made while the unit is stopped.
Factory setting
Note:
Changes made to the dipswitches SW1, SW2, and SW3 will become effective when the unit comes to a stop (remote controller
off). There is no need to power cycle the unit.
4. External static pressure
(1) SWA, SWC
1) Address board
All models
5Pa
15Pa
3
3
2
2
1
1
1
1
SWA SWC SWA SWC
2
2
35Pa
50Pa
3
2
1
1
SWA SWC
3
2
1
1
SWA SWC
2
Factory
setting
2
3
2
1
SWA
(A)
(B)
2
1
SWC
(A) Option
(B) Standard
Note:
Changes that are made to the dipswitches SWA and SWC immediately become effective regardless of the unit's operation
status (RUN/STOP) or the remote controller status (ON/OFF).
5. 1's and 10's digits
(1) SW11, SW12 (Rotary switch)
The use of a network remote controller (PAR-F27MEA) requires address setting.
1) Address board
Address settings must be made while the unit is stopped.
Factory setting
HWE12090
- 17 -
GB
[ VII Troubleshooting ]
6. Connection No. setting
(1) SW14 (Rotary switch)
This switch is used when the unit connected to an R2 series of outdoor unit.
1) Address board
Factory setting
Note:
Changes to the dipswitches SW11, SW12, SW14, and SW15 must be made while the unit is stopped and the remote controller
is OFF.
6. Instructions for debris removal operation
Details are described in section [9] “Instructions for debris removal operation” under chapter IX Troubleshooting in the Service
Handbook for the HBC.
Refer to the figure below for the position of the air vent valve on the indoor unit.
A
A Air vent valve
7. Instructions for the air vent operation
Details are described in section [9] “Instructions for debris removal operation” under chapter IX Troubleshooting in the Service
Handbook for the HBC.
Refer to the figure below for the position of the air vent valve on the indoor unit.
A
A Air vent valve
HWE12090
- 18 -
GB
[ VIII Disassembly Procedure ]
VIII Disassembly Procedure
[1] Disassembly Procedure
1. Control box
Exercise caution when removing heavy parts.
1. Removing the control box cover
(1) Remove the two fixing screws on the cover (A) to remove
it.
(A)
Fig.1
Fig.2
HWE12090
- 19 -
GB
[ VIII Disassembly Procedure ]
2. Thermistor (Intake air)
Exercise caution when removing heavy parts.
1. Remove the control box cover according to the procedure
in section 1.
2. Remove the thermistor.
(1) Remove the two fixing screws on the metal base (B) to remove it.
(B)
Fig.3
(2) Pull out the thermistor holder (C) and thermistor (D) on
the control box.
P63 model only
(C), (D)
Fig.4
HWE12090
- 20 -
GB
[ VIII Disassembly Procedure ]
3. Drainpan
Exercise caution when removing heavy parts.
1. Removing the filter and the bottom plate
(1) Push down the tab on the filter, and pull out the filter in
the direction of the arrow 1.
(2) Remove the fixing screws on the bottom plate (D), (E) to
remove it.
(a)
(a)
(a)
(a)
(D)
(E)
Fig.5
2. Removing the drainpan
(1) Pull out the drain pan in the direction of the arrow 1.
Fig.6
Note
ŒDrain the water out of the drain pan before removing
it.
ŒTo avoid dew condensation, use insulated screws in
the places marked with circles in Figure 7.
(a)
(E)
Fig.7
(a)
HWE12090
- 21 -
Insulation material
GB
[ VIII Disassembly Procedure ]
4. Thermistor (Water outlet) (Water inlet)
Exercise caution when removing heavy parts.
1. Remove the drain pan according to the procedure in section 3.
2. Removing the Heat exchanger cover
(1) Remove the four fixing screws on the heat exchanger cover (F) to remove it.
HEX
(F)
Fig.8
3. Removing the thermistor
(1) Remove the thermistor (G) from the thermistor holder (H)
on the copper tube.
Thermistor size
Water in: ø8mm
Water out: ø6mm
(G)
(H)
Fig.9
HWE12090
- 22 -
GB
[ VIII Disassembly Procedure ]
5. Fan and fan motor
Exercise caution when removing heavy parts.
1. Removing the filter and the bottom plate
(1) Push down the tab on the filter, and pull out the filter in the
direction of the arrow 1.
(2) Remove the fixing screws on the bottom plate (J) to remove it.
(a)
(a)
(a)
(a)
(J)
Fig.10
(a)
Tab
2. Removing the punching metal
(1) Remove the two fixing screws on the punching metal (K)
to remove it.
(a)
3. Removing the fan casing (bottom half)
(1) Squeeze the tabs on the fan casing to remove it in the direction of arrow 2.
(K)
Fig.11
4.
(1)
5.
(1)
Removing the motor cable
Remove the motor cable threw the rubber bush.
Removing the fan motor and the Sirocco fan
Remove the two motor fixing screws to remove the motor
and the Sirocco fan in the direction of arrow 3.
Fig.12
(2) Remove the four fan case fixing screws to take the top
half of the fan casing off.
Fig.13
HWE12090
- 23 -
GB
[ VIII Disassembly Procedure ]
6. Bearing
P40, P50, P63 models only.
Exercise caution when removing heavy parts.
1. Removeing the bearing
(1) Remove the two fixing screws on the bearing cover (M)
to remove it.
(M)
Fig.14
(2) Remove the two bearing retainer screws to remove the
bearing.
Fig.15
HWE12090
- 24 -
GB
[ VIII Disassembly Procedure ]
7. Heat exchanger
Exercise caution when removing heavy parts.
1. Remove the drain pan according to the procedure in section
3.
2. Remove the heat exchanger cover according to the procedure in section 4 2.
3. Removing the cover
(1) Remove the two fixing screws on the cover (T) to remove it.
(T)
Fig.16
(T)
Pipe support plate
4. Removing the Heat exchanger
(1) Remove the fixing screws on the heat exchanger (S) to remove it.
(S)
Fig.17
HWE12090
- 25 -
GB
[ VIII Disassembly Procedure ]
8. Drain pump
Exercise caution when removing heavy parts.
1. Remove the drain pan according to the procedure in section
3.
2. Removing the air-vent pipe
(1) Remove the air-vent pipe (a) from the cable strap (b).
(b)
(a)
Fig.18
3. Removing the drain pump
(1) Remove the four screws that are holding the drain pump and
the float switch in place.
Fig.19
HWE12090
- 26 -
GB
[ VIII Disassembly Procedure ]
9. Float Switch
Exercise caution when removing heavy parts.
1. Remove the drain pan according to the procedure in section
3.
2. Removing the air-vent pipe
(1) Remove the air-vent pipe (a) from the cable strap (b).
(b)
(a)
Fig.20
3. Removing the drain pump
(1) Remove the four screws that are holding the drain pump and
the float switch in place.
Fig.21
4. Removing the float switch
(1) Remove the two screws that are holding the float switch in
place.
Fig.22
HWE12090
- 27 -
GB
Feb. 2013 HWE12090
Printed in Japan
New publication, effective Feb. 2013
Specifications subject to change without notice