160
Troubleshooting
Alarm
Code
38
Abnormality of Picking up Circuit for Protection in Outdoor Unit
● The RUN indicator (Red) is ashing
● The indoor unit number, the alarm code, the unit model code and the connected number of indoor units are displayed on
LCD. Meanwhile, the indoor unit number and the alarm code are displayed on the 7-segment of outdoor unit PCB.
★
This alarm code is indicated when AC 208V or 230V is not detected in A* during inverter compressor stoppage.
Faulty O.U. PCB
Check wiring connection
of the other PCB. *1)
Yes
No
O.U. PCB is normal.
Is AC208V or 230V applied
to A* during stopping?
Cause Check Item
Action
(Turn OFF Main Switch)
Phenomenon
Abnormality of
Picking up Circuit
for Protection
Check voltage supplied
to connectors.
Repair wiring
connections.
Incorrect Connection
Activation of
Picking up Circuit
for Protection
Alarm Code History:
“02” and “09” before “38”.
Refer to Alarm Code
“02” and “09”
Starting Outdoor Unit at
Activation of Pickig up
Circuit for Protection
Faulty O.U. PCB
Replace O.U. PCB.
Power Supply A*
208/60Hz
230/60Hz
Between terminal #3 of PCN2, PCN16 and faston terminal
“N1” on O.U. PCB
*1): This alarm code may be indicated when the high pressure switch (PSH) is connected incorrectly or fails
(open fault). The item for alarm code 02 should be checked as well.
*2): Especially, check the wiring connection for PCN2 and PCN16 on O.U. PCB.
O.U. PCB: Outdoor Unit PCB
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