Outdoor Power Circuit Board; Brief Check Of Power Module - Mitsubishi Electric PUHZ-HRP71VHA Service Manual

Outdoor power circuit board

PUHZ-HRP71VHA
PUHZ-HRP100VHA
CN2
Connect to the outdoor controller circuit board
(CN2)
1-5:Transmitting signal to the outdoor
controller circuit board (0~5V DC)
2-5:Zero cross signal (0~5V DC)
3,4:18V DC
6-5:16V DC
7-5:16V DC
CN3
Thermistor (TH8)
<Heatsink>
CN5
Detection of primary
current
Connect to the
outdoor noise filter
circuit board (CN5)
CN4
Connect to the
outdoor controller
circuit board (CN4)
TABP2/SC-P2
Connect to the
ACTM
TABN
Connect to the
smoothing capacitor
CB –
OCH425F
CNAF
Connect to ACTM
TABP TABU/V/W
Connect to the
Connect to the compressor (MC)
smoothing capaci-
Voltage among phases:10V~180V AC
tor CB +

Brief Check of POWER MODULE

* Usually, they are in a state of being short-circuited if they are broken.
Measure the resistance in the following points (connectors, etc.).
If they are short-circuited, it means that they are broken.
1. Check of diode bridge
TABP1-TABS, TABN1-TABS, TABP1-TABT,TABN1-TABT
2. Check of DIP-IPM
P-U, P-V, P-W, N-U, N-V, N-W
DIP-IPM
73
CNDC
280-380V DC (1+, 3–)
Connect to the outdoor
controller circuit board
TABN2
Connect to ACTM
TABS/TABT
Connect to the
outdoor noise
filter circuit
board
Voltage among
phases:220-
240V AC
TABP1
Connect to
52C
TABN1
Connect to
ACTM