Troubleshooting for Outdoor Unit SiBE121135_A
215 Service Diagnosis
7.12 High Pressure Control in Cooling
Error Code F6
Outdoor Unit LED
Display
A j 1 i 2 h 3 i 4 i 5 h
∗ LED5 is equipped only on the 5-room model.
Method of Error
Detection
High-pressure control (operation halt, frequency drop, etc.) is activated in cooling mode if the
temperature sensed by the outdoor heat exchanger thermistor exceeds the limit.
Error Decision
Conditions
 The temperature sensed by the outdoor heat exchanger thermistor rises above about 65°C.
îš„ The error is cleared when the temperature drops below about
50°C.
Supposed
Causes
îš„ The installation space is not large enough.
îš„ Dirty outdoor heat exchanger
îš„ Defective outdoor fan motor
îš„ Defective stop valve
îš„ Defective outdoor electronic expansion valve or coil
îš„ Defective outdoor heat exchanger thermistor
îš„ Defective outdoor unit PCB
Troubleshooting
Check No.01
Refer to P.230
Check No.12
Refer to P.234
Check No.17
Refer to P.238
Check No.18
Refer to P.238
Check No.19
Refer to P.239
(R14413)
Caution
Replace the fan motor.
Reconnect the connector or
fan motor lead wires.
Replace the stop valve.
Replace the outdoor heat
exchanger thermistor.
Replace the outdoor unit
PCB.
Replace the outdoor
electronic expansion valve
or the coil.
Replace the outdoor unit
PCB.
Change the installation
location or direction.
Clean the outdoor heat
exchanger.
Check the installation space.
NG
OK
OK
NG
NG
OK
OK
OK
NG
NG
Check No. 19
Check the outdoor fan.
Check No. 18
Check the discharge
pressure.
Check No. 12
Check the outdoor electronic
expansion valve
coil.
Check No. 01
Check the outdoor heat
exchanger thermistor.
Check No. 17
Check the installation
condition.
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
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