Daikin SkyAir GQI-Eco Series Service Manual page 131

SiBE281013
4.13.2 RZQG125, 140
E3
Remote
Controller
Display
Applicable RZQG125, 140
Models
Method of Error [In cooling]
Detection
[In heating]
Error Decision
Conditions
Supposed
Causes
Service Diagnosis
Detect the continuity of high pressure switch (S1PH) with the protection device circuit.
The error is detected by the outdoor unit intermediate heat exchanger thermistor (R5T).
Detect the continuity of high pressure switch (S1PH) with the protection device circuit.
The error is detected by the indoor unit intermediate heat exchanger thermistor (R3T).
When the high pressure switch is activated (4.0 MPa)
When the outdoor unit intermediate thermistor (R5T) detects the pressure shown below.
3.92 MPa or more continuously for one minute
(Reference: equivalent saturation temperature 62°C)
When the indoor unit intermediate thermistor (R3T) detects the pressure shown below.
3.92 MPa or more continuously for one minute
(Reference: equivalent saturation temperature 62°C)
Stop valve is not opened
Harness breaking or poor connector connection of the high pressure switch
Defective high pressure switch
Indoor unit suction filter is blocked (In heating)
Defective high pressure switch
Defective indoor unit fan (In heating)
Outdoor heat exchanger is dirt (In cooling)
Defective outdoor unit fan (In cooling)
Overcharge of refrigerant
Defective outdoor unit PCB (A2P)
Defective outdoor unit PCB (A1P)
Troubleshooting by Remote Controller
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