Mitsubishi Electric PEAD Series Service Manual page 36

TROUBLESHOOTING
10-5. TEST POINT DIAGRAM
10-5-1. Power supply board
PEAD-A12AA7
PEAD-A18AA7
PEAD-A24AA7
PEAD-A30AA7
PEAD-A36AA7
PEAD-A42AA7
CNP
CNXB1 CNXC1 CNXA1
HWE16080
CND
C53 CNMF
(*1)
PC51 C25
(*1) (*1)
CND Power supply voltage (208 - 230VAC)
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
CNP Drain-up mechanism output
(208 - 230VAC)
Connect to the indoor controller board
Connect to the indoor controller board
Connect to the indoor controller board
Connect to the indoor power board
Connect to the indoor power board
Connect to the indoor power board
(*1)
V Voltage on the (-) side of PC51 and
FG
C25
(Same with the voltage between 7 (+)
and 4 (-) of CNMF)
V Voltage between the C25 pins 15 VDC
CC
(Same with the voltage between 5 (+)
and 4 (-) of CNMF)
V Voltage between the C53 pins 0VDC
sp
(with the fan stopped)
1 - 6.5VDC (with the fan in operation)
(Same with the voltage between 6 (+)
and 4 (-) of CNMF)
36
Run 7.5 VDC
(0 - 15 pulse)