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Outdoor power circuit board
PUZ-A30/36/42NHA2
PUZ-A30/36/42NHA2-BS
PUY-A30/36/42NHA2
PUY-A30/36/42NHA2-BS
TABP1
Connect to 52C
TABP2/SC-P2
Connect to
ACTM
CN4
Connect to the
outdoor controller
circuit board
(CN4)
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)
CNDC
280-380V DC (1+, 3–)
Connect to the outdoor
controller circuit board
TABS/TABT
Connect to the
outdoor noise
filter circuit
board
Voltage among
phases:
208/230V AC
Brief check of POWER MODULE
W 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
TABN2
Connect to ACTM
TABN
Connect to the
smoothing capacitor
CB –
(A42N only)
TABU/V/W
Connect to the compressor (MC)
Voltage among phases:10V~180V AC
TABP
Connect to the
smoothing capaci-
tor CB +
(A42N only)
TABN1
Connect to
ACTM
DIP-IPM
CNAF
Connect to ACTM
OCH429--3.qxp 07.11.20 9:19 AM Page 69