Voltage Test Points On The Control Board - Mitsubishi Electric PEFY-P25VMA-E Technical & Service Manual

[ VII Troubleshooting ]

4. Voltage test points on the control board

1. PEFY-P20, 25, 32, 40, 50, 63, 71, 80, 100, 125, 140VMA(L)-E
CN2M
CN3A
SW2
SW4
CND
CNP
HWE08120
CN32
SW3
Indoor controller board
F01
PC51(*1) C53(*1)
Power supply board
F01
CND
CN2M For M-NET transmission cable
SWE
SW2
CN41
SW4
CN51
CN52 SW3
CN32
CN20
CN3A
CN4F
CN44
CN52
CN51
SWE
CN41
CN44
CN4F
CN20
CNMF Fan motor output
CNP
(*1)
V
V
Vsp Voltage between the C53 pins
C25(*1)
CNMF
- 19 -
Fuse(AC 250V 6.3A)
Power supply voltage (220 -
240VAC)
connection (24 - 30VDC)
Emergency operation
Capacity setting
Function setting
Function setting
Remote start/stop adapter
For MA remote controller cable
connection
(10 - 13 VDC (Between 1 and 3.))
Remote display
Centralized control
JAMA standard HA terminal A
Thermistor (liquid/gas tempera-
ture)
Float thermistor
Thermistor (Inlet temperature)
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)
Drain-up mechanism output
(200VAC)
Voltage on the (-) side of PC51
FG
and C25
(Same with the voltage between 7
(+) and 4 (-) of CNMF)
Voltage between the C25 pins
CC
15 VDC
(Same with the voltage between 5
(+) and 4 (-) of CNMF)
0VDC (with the fan stopped)
1 - 6.5VDC (with the fan in opera-
tion)
(Same with the voltage between 6
(+) and 4 (-) of CNMF)
GB