78
OCH439M
Outdoor power circuit board
PUHZ-W85VHA(-BS)
PUHZ-W85VHAR1(-BS)
TABP1
Connect to
ACTM
+
TABP2
Connect to the
ACTM
CN4
Connect to the
outdoor controller
circuit board (CN4)
CN3
Thermistor (TH8)
<Heat sink>
CN5
Detection of input
current
Connect to the
outdoor noise filter
circuit board (CN5)
CNDC
280–380 V DC (
1
+,
3
−)
Connect to the outdoor
controller circuit board
TABS/TABT
Connect to the
outdoor noise
filter circuit board
Voltage among
phases: 230 V AC
Brief Check of POWER MODULE
If they are short-circuited, it means that they are broken.
Measure the resistance in the following points (connectors, etc.).
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
TABU/V/W
Connect to the compressor (MC)
Voltage among phases: 10–180 V AC
TABN1
Connect to
ACTM
—
DIP-IPM
CNAF
Connect to ACTM
CN2
Connect to the outdoor controller circuit board
(CN2)
1
–
5
: Transmitting signal to the outdoor
controller circuit board (0–5 V DC)
2
–
5
: Zero cross signal (0–5 V DC)
3
,
4
: 18 V DC
6
–
5
: 16 V DC
7
–
5
: 16 V DC