Mitsubishi Electric CITY MULTI PFFY-W20VCM-A, Техническое и сервисное руководство

Страница: 22 / 38

[
VII
Troubleshooting ]
- 17 -
HWE18170 GB
4. Voltage test points on the control board
1. PFFY-W20, 25, 32, 40, 50VCM-A
F1 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
SW3 Function setting
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/outlet tem-
perature)
CN20 Thermistor (Inlet air temperature)
CNMF1 Fan motor output
1 - 4: 294 - 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)
CNSA Pressure sensor (inner water)
CNSB Pressure sensor (outlet water)
CN8A Flow control valve (FCV)
(*1)
V
FG
Voltage on 3 of PC352 and the (-)
side of C081
(Same with the voltage between 7
(+) and 4 (-) of CNMF)
V
CC
Voltage between the C084 pins
15 VDC
(Same with the voltage between 5
(+) and 4 (-) of CNMF)
Vsp Voltage between the C351 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)
CNMF1
CN44
CN22
CN20
CNSB
CNSA
CN3A
SW1 SW2
SW4 SW21
SW3
CN52 CN51 CN41
SW22 CN8A
F1
CND
SWE
CN32
CN2M
HWE18170.book 17 ページ ２０１９年５月８日 水曜日 午前１０時３２分