124
[20,21,22,23] Temperature sensor failure
Reconnect
If sensor terminal is fixed well
If sensor resistor
/characteristic is proper
Check if PCB is faulty,
if yes, replace it
Replace sensor
N
Y
Y
N
20. Troubleshooting
[26] Communication failure with indoor
Indoor power on
First, check the indoor unit is
powered on
Check if communication
wire between outdoor
and indoor is connected
normally
Replace PCB
Re-connect
N
Y
Y
N