ESIE12-06
4.13.2 RZQG125, 140
E3
Remote
Controller
Display
Applicable
RZQG125, 140
Models
Method of Error
[In cooling]
Detection
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).
[In heating]
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).
Error Decision
When the high pressure switch is activated (4.0 MPa)
Conditions
When the outdoor unit intermediate thermistor (R5T) detects the pressure shown below.
When the indoor unit intermediate thermistor (R3T) detects the pressure shown below.
Supposed
Stop valve is not opened
Causes
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)
Service Diagnosis
3.92 MPa or more continuously for one minute
(Reference: equivalent saturation temperature 62°C)
3.92 MPa or more continuously for one minute
(Reference: equivalent saturation temperature 62°C)
Troubleshooting by Remote Controller
197