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SIMPLIFIED DRIVE CIRCUIT CHECKING METHOD
[MODEL RAC-32CNH1]
(1) Remove the power module.
The drive circuit can only be checked using the outdoor unit electrical parts. Use the drive check (D) type and relay
connectors CN-D3 and CN-D2 with terminal rings, and connect them. Operate the compressor after unplugging three
cords from the terminal board.
1. Connection of the drive checker.
Control PWB
Drive checker
Relay connector (CN-D3)
There are 6 lamps (LEDs) on
the drive checker. "When the
drive circuit is normal, these
lamps blink for about 1.5
second in sequence." If any
lamp lights from the
beginning or does not light to
the end, the drive circuit
(control P.W.B.) is abnormal.
Relay connector (CN-D2)
Terminal ring
Indicator (LED)
2. Simplified checking method.
Do lamps from @ to @ light
in sequence?
YES
Check the power module.
Replace the power module
if it is abnormal.
v
pone
Check the lighting mode of
the drive checker again.
Abnormal
Replace the parts of the
phase of which the checker
lamp is abnormal.
Re-check if there are any
parts not checked in the
Return the connection to .
the
original
state
and
perform a final check.
drive circuit.
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