Test Point Diagram - Mitsubishi Electric PUHZ-RP3VHA Technical & Service Manual

10-7. TEST POINT DIAGRAM

Outdoor controller board
PUHZ-RP3VHA
PUHZ-RP4VHA
PUHZ-RP5VHA
PUHZ-RP6VHA
CNS
Indoor/outdoor unit
connecting wire
Communication
power supply D71
Voltage developed
across: 16-30V
CNAC
1 to 3:Power supply
(AC220V-240V)
5 to 7:Power supply
(AC220V-240V)
21S4
Four-way valve
63H
High pressure
protect switch
63L
Low pressure
protect switch
only for RP4-6
52C
52C relay signal
only for RP4-6
SV2
RP3:Bypass valve
RP4-6:Replace
valve
Power supply
(AC220-240V)
FAN11•FAN21
(FAN21 is only for RP4-6.)
Connect to fan motor.
CN4
CN52C
Transmission to
52C relay signal
power board
(Noise filter board)
Only for RP3
FAN12
•
(FAN22 is only for RP4-6.)
Connect to fan motor
(Detection of position)
1 to 5
2 to 5
3 to 5
SWP
Pump down
LED1,LED2
Display of
operating
CN31
condition
Emergency
operation
44
FAN22
) DC 5V pulse
(Detected while the
motor is rotating.)
CNDC
DC300-380V
Connect to
power board
LEV-A,LEV-B
Linear expansion
valve
Thermistor
Detection of out-
side temp
Thermistor
Detection of
Cond./Eva. temp
Thermistor
Detection of
liquid temp
Thermistor
Detection of
discharge temp
CNDM
1 to 2: Input of silent mode
1 to 3: Input of external
contact point
CNM
A-control service
tool
CNMNT
Connect to M-NET
adaptor
Control power
supply voltage 5V:
4.75-5.25V
J1~J6
Model selection
SW1
Forced defrosting
Cancellation of error code
Refrigerant address
SW4
Test run
SW5
Power failure
automatic
recovery