Troubleshooting
SiENBE07-618_C
76
Service Diagnosis
4.15 High Pressure Control in Cooling
Remote Control
Display
F6
Method of
Malfunction
Detection
High-pressure control (operation half, frequency drop, etc.) is activated in cooling mode if the
temperature sensed by the outdoor heat exchanger thermistor exceeds the limit.
Malfunction
Decision
Conditions
The temperature sensed by the outdoor heat exchanger thermistor rises above about 60°C.
The error is cleared when the temperature drops below about 50°C.
Supposed
Causes
The installation space is not large enough.
Dirty outdoor heat exchanger
Defective outdoor fan motor
Defective stop valve
Defective electronic expansion valve or coil
Defective outdoor heat exchanger thermistor
Defective outdoor unit PCB
Troubleshooting
Check No.04
Refer to P.94
Check No.06
Refer to P.96
Check No.07
Refer to P.97
Check No.08
Refer to P.97
Check No.09
Refer to P.98
(R11897)
Caution
Replace the stop valve.
Replace the outdoor heat
exchanger thermistor.
Replace the outdoor unit
PCB.
Check the installation space.
Change the installation
location or direction.
Clean the outdoor heat
exchanger.
Replace the fan motor.
Reconnect the connector or
fan motor lead wires.
Replace the electronic
expansion valve or the coil.
Replace the outdoor unit
PCB.
NG
OK
OK
NG
NG
OK
OK
OK
NG
NG
Check No. 09
Check the outdoor fan.
Check No. 08
Check the discharge
pressure.
Check No. 04
Check the electronic
expansion valve.
Check No. 06
Check the outdoor heat
exchanger thermistor.
Check No. 07
Check the installation
condition.
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
SIENBE07-618_C_FRONT.pdf 88
9/02/2011 9:25:07
