[0B] Drain Pump Fault; [0C] Indoor Sensor (Ta) Short Or Open Circuit Alarm - Toshiba HFCR407C Service Manual

Check code
[0b]
Drain pump fault
Is drain pump connected?
Does float switch operate?
Does drainage water collect?
Does drain pump operate?
Check for blockage of
drainage hose.
14
Check code
[0C]
Indoor sensor (TA) short or open circuit alarm
TA sensor open/short has been detected. Check disconnection of connector connection (TA sensor: CN04)
circuit and resistance value characteristics of sensor.
When the sensors are normal, replace indoor PC board (MCC-1361-01).
Troubleshooting
Diagnostic procedure for check code
No
Yes
No
Yes
(*1) For confirmation, check voltage under condition
that connector is connected to CN11.
No
Yes
No
Yes
Operation cause
1. Float switch disconnection
2. Drain pump operation error
3. Drain hose blockage
No
Is circuit wiring
normal?(*1)
No
Is power to drain
pump turned on?(*2)
Yes
Drain pump error
Operation cause
TA sensor open/short
80
Check connection of connector CN11
(Drain pump: Indoor main, PC board
(MCC-1361-01))
Check and modify wiring circuit.
(MCC-1361-01)
Indoor PC board error
(MCC-1361-01)
Float switch error
Check and modify wiring
circuit.
(*2) Check whether voltage of CN08, pins
1 to 3 of the indoor main PC board, is
230V or not (MCC1361-01).