High Pressure Control In Cooling - Daikin Super Multi NX FFQ25B8V1B Service Manual

SiBE121021_C
7.8

High Pressure Control in Cooling

F6
Remote
Controller
Display
Outdoor Unit LED A
Display
Method of 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.
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
Service Diagnosis
j i h i i
1 2 3 4
The temperature sensed by the outdoor heat exchanger thermistor rises above about
The error is cleared when the temperature drops below about
The installation space is not large enough.
Defective outdoor unit fan
Defective electronic expansion valve
Defective outdoor heat exchanger thermistor
Defective outdoor unit PCB
Defective stop valve
Dirty outdoor heat exchanger
h
5
Troubleshooting for Outdoor Unit
°C.
50
°C.
65
341