Mitsubishi Electric CITY MULTI PFFY-WP20VLRMM-E Operating manual

Air-Conditioners
TECHNICAL & SERVICE MANUAL
Models PFFY-WP20VLRMM-E
PFFY-WP25VLRMM-E
PFFY-WP32VLRMM-E
PFFY-WP40VLRMM-E
PFFY-WP50VLRMM-E
2013

ii
HWE12100 GB
Safety Precautions
Read before installation and performing electrical work
Symbol explanations
Thoroughly read the following safety precautions prior to installation.
Observe these safety precautions for your safety.
This equipment may have adverse effects on the equipment on the same power supply system.
Contact the local power authority before connecting to the system.
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 dam-
age 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.
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.
Ask your dealer or a qualified technician to install the unit.
Improper installation by the user may result in water leak-
age, electric shock, or fire.
Properly install the unit on a surface that can withstand its
weight.
Unit installed on an unstable surface may fall and cause in-
jury.
Only use specified cables. Securely connect each cable so
that the terminals do not carry the weight of the cable.
Improperly connected cables may produce heat and start a
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.
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.
Only use accessories (i.e., air cleaners, humidifiers, electric
heaters) recommended by Mitsubishi Electric.
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.
The fins are sharp and pose a risk of cuts.

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HWE12100 GB
Precautions for handling units for use with water
WARNING
Properly install the unit according to the instructions in the
Installation Manual.
Improper installation may result in water leakage, electric
shock, or fire.
Have all electrical work performed by an authorized electri-
cian according to the local regulations and the instructions
in this manual. Use a dedicated circuit.
Insufficient power supply capacity or improper installation
of the unit may result in malfunctions of the unit, electric
shock, or fire.
Keep electrical parts away from water.
Wet electrical parts pose a risk of electric shock, smoke, or
fire.
Securely attach the control box cover.
If the cover is not installed properly, dust or water may infil-
trate and pose a risk of electric shock, smoke, or fire.
Only use the type of refrigerant that is indicated on the unit
when installing or relocating the unit.
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 or a qualified technician when moving
or reinstalling the unit.
Improper installation may result in water leakage, electric
shock, or fire.
After completing the service work, check for a refrigerant
leak.
If leaked refrigerant is exposed to a heat source, such as a
fan heater, stove, or electric grill, toxic gases will be gener-
ated.
Do not try to defeat the safety features of 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 recom-
mended by Mitsubishi Electric may result in smoke, fire, or
explosion.
Consult your dealer for proper disposal method.
CAUTION
Do not use the existing water piping.
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 water.
Only use clean water as a refrigerant. The use of water out-
side the specification may damage the refrigerant circuit.

CONTENTS
HWE12100 GB
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 ......................................................................................................................... 7
VI
Refrigerant System Diagram
[1] Refrigerant system diagram...................................................................................................... 8
VII
Troubleshooting
[1] Troubleshooting ........................................................................................................................ 9
1.Check methods....................................................................................................................... 9
2.DC fan motor (fan motor/indoor control board)..................................................................... 10
3.Address switch setting .......................................................................................................... 11
4.Voltage test points on the control board ............................................................................... 12
5.Dipswitch setting (Factory setting)........................................................................................ 13
6.Instructions for debris removal operation.............................................................................. 15
7.Instructions for the air vent operation ................................................................................... 15
VIII
Disassembly Procedure
[1] Disassembly Procedure.......................................................................................................... 16
1.Control box ........................................................................................................................... 16
2.Thermistor (Intake air) .......................................................................................................... 17
3.Drainpan ............................................................................................................................... 18
4.Thermistor (Water inlet) (Water outlet) ................................................................................. 20
5.Fan and fan motor ................................................................................................................ 21
6.Heat exchanger .................................................................................................................... 22

HWE12100 GB

[ I Features ]
- 1 -
HWE12100 GB
I Features
[1] Features
Model Cooling capacity/Heating capacity
kW
PFFY-WP20VLRMM-E 2.2/2.5
PFFY-WP25VLRMM-E 2.8/3.2
PFFY-WP32VLRMM-E 3.6/4.0
PFFY-WP40VLRMM-E 4.5/5.0
PFFY-WP50VLRMM-E 5.6/6.3

[ II Components and Functions ]
- 2 -
HWE12100 GB
II Component s and Function s
[1] Components and Functions
1. Indoor (Main) Unit
(A) Air
(A)
(A)

[ III Specfications ]
- 3 -
HWE12100 GB
III Specfications
[1] Specifications
1. Specfications
*1 Cooling/Heating capacity indicates the maximum value at operation under the following condition,
<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 20Pa at factory shipment.
Model PFFY-
WP20VLRMM-E
PFFY-
WP25VLRMM-E
PFFY-
WP32VLRMM-E
Power supply Voltage V 220-240
Frequency Hz 50/60
Cooling capacity *1 kW 2.2 2.8 3.6
Heating capacity *1 kW 2.5 3.2 4.0
Power consumption*2 Cooling kW 0.04 0.04 0.05
Heating kW 0.04 0.04 0.05
Current consump-
tion*2 Cooling A 0.35 0.35 0.47
Heating A 0.35 0.35 0.47
External finish (Munsel No.) Galvanized steel plate
Dimensions Height mm 639
Width mm 886 1006
Depth mm 220
Net weight kg 22 25
Heat exchanger Cross fin (Aluminium fin and cupper tube)
Fan Type Sirocco fan x 1 Sirocco fan x 2
Airflow rate
(Low-Mid-High)
m3/min 4.5-5.0-6.0 6.0-7.0-8.0 7.5-9.0-10.5
External static pressure Pa 20-40-60
Motor Output kW 0.096
Air filter PP Honeycomb fabric
Diameter of
water pipe
Inlet in Rc3/4 screw
Outlet in Rc3/4 screw
Drain pipe dimensions mm
[in.]
Accesory hose ø27 [1-3/32] (top end : ø20 [13/16])
Operating noise
(Low-Mid-High)
20Pa dB (A) 31-33-38 31-33-38 31-35-38
40Pa 32-37-39 32-37-39 34-37-40
60Pa 36-38-42 36-38-42 36-40-42

[ III Specfications ]
- 4 -
HWE12100 GB
*1 Cooling/Heating capacity indicates the maximum value at operation under the following condition,
<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 20Pa at factory shipment.
Model PFFY-WP40VLRMM-E PFFY-WP50VLRMM-E
Power supply Voltage V 220-240
Frequency Hz 50/60
Cooling capacity *1 kW 4.5 5.6
Heating capacity *1 kW 5.0 6.3
Power consumption*2 Cooling kW 0.05 0.07
Heating kW 0.05 0.07
Current consump-
tion*2 Cooling A 0.47 0.65
Heating A 0.47 0.65
External finish (Munsel No.) Galvanized steel plate
Dimensions Height mm 639
Width mm 1246
Depth mm 220
Net weight kg 29
Heat exchanger Cross fin (Aluminium fin and cupper tube)
Fan Type Sirocco fan x 2
Airflow rate
(Low-Mid-High)
m3/min 8.0-10.0-11.5 10.5-13.0-15.0
External static pressure Pa 20-40-60
Motor Output kW 0.096
Air filter PP Honeycomb fabric
Diameter of
water pipe
Inlet in Rc3/4 screw
Outlet in Rc3/4 screw
Drain pipe dimensions mm
[in.]
Accesory hose ø27 [1-3/32] (top end : 20 [13/16])
Operating noise
(Low-Mid-High)
20Pa dB (A) 34-37-40 37-42-45
40Pa 37-39-43 38-44-47
60Pa 37-41-44 39-45-48

[ III Specfications ]
- 5 -
HWE12100 GB
2. Electrical component specifications
Component Sym-
bol
PFFY-WP20VLRMM-E PFFY-WP25VLRMM-E PFFY-WP32VLRMM-E
Room temperature
thermistor
TH21 Resistance 0°C/15k , 10°C/9.6k , 20°C/6.3k , 25°C/5.4k , 30°C/4.3k , 40°C/3.0k
Water inlet pipe
thermistor
TH22 Resistance 0°C/15k , 10°C/9.6k , 20°C/6.3k , 25°C/5.4k , 30°C/4.3k , 40°C/3.0k
Water outlet pipe
thermistor
TH23 Resistance 0°C/15k , 10°C/9.6k , 20°C/6.3k , 25°C/5.4k , 30°C/4.3k , 40°C/3.0k
Fuse FUSE 250V 6.3A
Fan motor 8-pole, Output 96W SIC-
70CW-D896-3 8-pole, Output 96W SIC-70CW-D8114-4
Power supply terminal
block
TB2 (L, N, ) 330V 30A
Transmission terminal
block
TB5
TB15 (1, 2), (M1, M2, S) 250V 20A
Component Sym-
bol
PFFY-WP40VLRMM-E PFFY-WP50VLRMM-E
Room temperature
thermistor
TH21 Resistance 0°C/15k , 10°C/9.6k , 20°C/6.3k , 25°C/5.4k , 30°C/4.3k , 40°C/3.0k
Water inlet pipe
thermistor
TH22 Resistance 0°C/15k , 10°C/9.6k , 20°C/6.3k , 25°C/5.4k , 30°C/4.3k , 40°C/3.0k
Water outlet pipe
thermistor
TH23 Resistance 0°C/15k , 10°C/9.6k , 20°C/6.3k , 25°C/5.4k , 30°C/4.3k , 40°C/3.0k
Fuse FUSE 250V 6.3A
Fan motor 8-pole, Output 96W SIC-70CW-D8114-4
Power supply terminal
block
TB2 (L, N, ) 330V 30A
Transmission terminal
block
TB5
TB15 (1, 2), (M1, M2, S) 250V 20A

[ IV Outlines and Dimensions ]
- 6 -
HWE12100 GB
IV Outlines and Dimensions
[1] Outlines and Dimensions
1. PFFY-WP20, 25, 32, 40, 50VLRMM-E
Water pipe (From HBC unit) Rc3/4 screw
Air purge valve
2
1
2-12X16
Floor mounting hole
Floor mounting
hole pitch
2XF-ø4.7
Duct mounting hole
Control box
2-ø4.7
Duct mounting hole
2X2-12X16
Terminal bed (Power souce)
Knockout hole ø27 (Power souce wiring)
Terminal bed (Transmission)
Knockout hole ø27 (Transmission wiring)
Level adjusting screw
4 pcs. (attached)
Air filter
Drain pan
Sub drain pan
Drain hose (accessory) O.D.27mm (End O.D.20mm)
(Wall mounting hole pitch)
Wall mounting hole
Air outlet
Air inlet
Water pipe (To HBC unit) R/c 3/4 screw
Rc3/4 screw
(From HBC unit)
(To HBC unit)
PFFY-WP40VLRMM-E PFFY-WP32VLRMM-E PFFY-WP50VLRMM-E
Model
Dimensions
PFFY-WP20VLRMM-E PFFY-WP25VLRMM-E
400
60
63
410
G
108
48
61445
106
96
(75)
77 35
A
175
D
170 300
385 43
84
15
15
9
120
E C
29
220
10
49
3098
76
90
639
B (Wall mounting hole pitch)
B (Floor mounting hole pitch)
8
2 Water pipe1 Water pipe
ABCDEFG
1246
760 780
1000 1020
692 932
730 970
480 720
5 7
1006
886 640 660572 610 360 4
45

[ V Wiring Diagram ]
- 7 -
HWE12100 GB
V Wiring Diagram
[1] Wiring Diagram
1. PFFY-WP20,25,32,40,50VLRMM-E
33
22
00
11
99
88
77
55
44
667
6
5
4
321
8
0FED
C
B
A
9
SWC
I.B.
SW14
(Connection No.)
SW7
SW12
(10ths digit)
SW11
(1s digit)
SW1
A.B.
SW5 SWA
Fan motor
NOTE: Symbols used in wiring diagram above are, (HEAVY DOTTED LINE): FIELD WIRING (THIN DOTTED LINE): OPTIONAL PARTS : CONNECTOR : TERMINAL
Thermistor (piping temp.detection/water in)
Thermistor (piping temp.detection/water out)
Switch (for mode selection)
At receiving MA transmission power source → Lighting
Switch (for capacity code)
Switch (10ths digit address set)
Switch (for static pressure selection) Switch (for static pressure selection)
Switch (connection No.set)
Switch (for mode selection) Switch (for model selection)
Connector (emergency operation)
Switch (for mode selection) Switch (for model selection)
Transmission terminal block
Fuse <AC250V 6.3A>
Arrester
AC reactor(Power factor improvement)
Varistor
TB15
FUSE
DSA
L1
ZNR01,02
TH21
Thermistor (inlet air temp.detection)
TH23
TH22
NAME
LED operation under normal state
SYMBOL
SYMBOL
SYMBOL
I.B. A.B.
LED1
Indoor controller board Address board
At applying main power source → Lighting
Switch (1s digit address set)
SW2 SW3
SW11 SW12
SWA
SW14
SWC SW1
LED2
SW4 SWE
TB2
TB5
Transmission terminal block
Power source terminal block
SYMBOL EXPLANATION
NAME
SW5 SW7
CN27
CN41 CN51 CN52 CN90
CN100
Connector (HA terminal-A) Connector (Centrally control) Connector (Remote indication) Connector (Wireless) Connector (IT terminal) Connector (Damper)
CN32
Connector (Remote switch)
12345
8145
MS 3~
5418
12345
31
12345
5418
1324
81324
3
567
1456
1
7
115226337448
12
1351324 12
4231
1213
IT terminal
CN100
CN52
(Green)
CN100
IT terminal
(PAC-IT51AD-E)
CN51
IT terminal
(PAC-IT52AD-E)
CN100
CN4F
(Green)
(Blue)
(Red) (Red)
(Red)
(Red)
LED1
CN62
FUSE
CN82
ZNR02
DSA
LED2
DC310~340V
Rectify circuit
(Blue)
POWER SUPPLY
~220, 230, 240V
50, 60Hz
TO NEXT INDOOR UNIT
CN3A
CNMF
PULL BOX
CND
CN2M
SW2SW4SW3
CN90
BREAKER (16A)
CN42CN81CN32
CN27
CN20CN44CN41CN52
SWE
ON
OFF
CN51
U
(Black)
U
ZNR01
FUSE (16A)
L N
TB2
L1
t°t°t°
TB5
TB15
M1
2
M2
1
S(SHIELD)
TH21TH23TH22
*A
*A
In connecting optional IT terminal, use either CN51 or CN52 which is not connected. Be careful for connector colors.
INSIDE SECTION OF CONTROL BOX
OPERATION OF LED FOR INDOOR CIRCUIT BOARD SERVICE
only PFFY-WP40
·
50VLRMM-E
TO MA REMOTE CONTROLLER
TO OUTDOOR UNIT BC CONTROLLER REMOTE CONTROLLER

[ VI Refrigerant System Diagram ]
- 8 -
HWE12100 GB
VI RefrigerantSystem Diagram
[1] Refrigerant system diagram
(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
(F)
(H)
(C)
(A)
(E)
(D)
(B)
(G)
Capacity PFFY-WP20, 25, 32, 40, 50VLRMM-E
Water outlet Rc3/4 screw
Water inlet Rc3/4 screw

[ VII Troubleshooting ]
- 9 -
HWE12100 GB
VII Troubleshooting
[1] Troubleshooting
1. Check methods
1. Component and check points
(1) Thermistor
Room temperature thermistor (TH21)
Water inlet thermistor (TH22)
Water outlet thermistor (TH23)
Disconnect the connector and measure the resistance between terminals with a tester.
(Ambient temperature 10°C - 30°C)
1) Thermistor characteristic graph
(2) Fan motor (CNMF)
Refer to the page on "DC fan motor (fan motor/indoor control board)."
Normal Abnormal
4.3k - 9.6k Open or short
(Refer to the thermistor characteristic graph below.)
Low-temperature thermistor
Room temperature thermistor (TH21)
Water inlet thermistor (TH22)
Water outlet thermistor (TH23)
Thermistor R0= 15 k 3%
Multiplier of B = 3480 k 2%
0°C 15k
10°C 9.6k
20°C 6.3k
25°C 5.2k
30°C 4.3k
40°C 3.0k
(A) Temperature (°C)
(B) Resistance (k )
Rt = 15 exp { 3480( ) }
1
273+t
1
273
0
10
20
30
40
50
-20 -10 0 10 20 30 40 50
(A)
(B)

[ VII Troubleshooting ]
- 10 -
HWE12100 GB
2. DC fan motor (fan motor/indoor control board)
1. CAUTION
A high voltage is applied to the connector for connection to the fan motor (CNMF).
Do not unplug the connector CNMF with the unit energized to avoid damage to the indoor control board and fan motor.
2. Troubleshooting
Symptom: Indoor unit fan does not run.
Check fan motor connector contact
(CNMF).
Replace the indoor control board.
Replace the indoor control board.
Fix the connection.
Yes
No
Yes
No
Yes
No
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
V
FG .
(same with the voltage between fan connector 7 (+) and 4(-))
Is the fan motor connector
(CNMF) fully inserted?
Is the voltage within the
normal range?
Replace the motor.
Are 0VDC and 15VDC
displayed alternately?
Check the power supply.
Measure the voltage at the indoor control board.
310 - 340VDC (same with the voltage between fan connector 1 (+) and 4(-))
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.]
VDC
Power supply voltage

[ VII Troubleshooting ]
- 11 -
HWE12100 GB
3. Address switch setting
Make sure that power to the unit is turned off.
1. When using an ME remote controller, set the address with the rotary switches (SW11, SW12).
Address 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."
(A) Indoor unit control board
(B) Factory setting (all models)
ON
OFF
ON
OFF
(A)
(B)

[ VII Troubleshooting ]
- 12 -
HWE12100 GB
4. Voltage test points on the control board
1. PFFY-P20, 25, 32, 40, 50, 63VLRMM-E
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
CN51 Centralized control
CN41 JAMA standard HA terminal A
CN44 Thermistor (water inlet/water out-
let temperature)
CN20 Thermistor (Inlet temperature)
CN3C Indoor-outdoor transmission
(0 - 24VDC)
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)
(*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 opera-
tion)
(Same with the voltage between 6
(+) and 4 (-) of CNMF)
Fuse
CND
С25(*1)
CN2M
SWE
SW2
SW4
CN42
SW3
CN81
CN32
LED2 CN3A CN60
CN52
CN51
CN41
CN44
CN20
CN3C
LED1
PC941(*1)
C951(*1)
CNMF

[ VII Troubleshooting ]
- 13 -
HWE12100 GB
5. Dipswitch setting (Factory setting)
1. Function setting
(1) SW1
1) Adress board
(2) SW3
1) Indoor control board
Dipswitch settings must be made while the unit is stopped.
Switch position Function Switch setting
ON OFF
1 Active Thermistor (Intake air ther-
mistor)
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
Factory setting
Switch position Function Switch setting
ON OFF
1 Unit type Cooling only Heat pump
2- - -
3- - -
4- - -
5- - -
6- - -
7- - -
8 Heating 4-deg up Disabled Enabled
Factory setting

[ VII Troubleshooting ]
- 14 -
HWE12100 GB
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.
3. Model setting
(1) SW4
1) Indoor control board
Dipswitch settings must be made while the unit is stopped.
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
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).
Factory setting
Factory
setting
(A) Option
(B) Standard
PFFY-WP20VLRMM-E PFFY-WP25VLRMM-E PFFY-WP32VLRMM-E
PFFY-WP40VLRMM-E PFFY-WP50VLRMM-E
20PaSWA, SWC
External
static pressure 1
2
3
1 - 3
1 - 2
SWA SWC
40Pa
1
2
3
SWA SWC
60Pa
Adderess board
<At delivery>
1
2
3
SWA SWC
1
2
3
SWA SWC
1
2
1
2
1
2
1
2
1
2
3
(B)
(A)
SWA SWC
1
2

[ VII Troubleshooting ]
- 15 -
HWE12100 GB
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.
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
Note:
Changes to the dipswitches SW11, SW12 and SW14 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.
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.
Factory setting
Factory setting
AAir vent valve
A
AAir vent valve
A