Si20-701_B Troubleshooting by Remote Controller
156
Remote Controller Display
E3
Applicable Models
RZQG71, 100L
Method of Error Detection
[In cooling]
îš„ The error is detected by the outdoor unit intermediate
heat exchanger thermistor (R5T).
[In heating]
îš„ The error is detected by the indoor unit intermediate
heat exchanger thermistor (R3T).
Error Decision Conditions
[In cooling]
îš„ When the outdoor unit intermediate thermistor (R5T)
detects the pressure shown below.
3.92 MPa or more continuously for 1 minute
(Reference: equivalent saturation temperature 62°C)
[In heating]
îš„ When the indoor unit intermediate thermistor (R3T)
detects the pressure shown below.
3.92 MPa or more continuously for 1 minute
(Reference: equivalent saturation temperature 62°C)
Supposed Causes
îš„ Dirt and blockage of the outdoor unit heat exchanger
îš„ Defective outdoor unit fan motor
îš„ Defective indoor unit fan motor
îš„ Defective electronic expansion valve
îš„ Refrigerant overcharge
îš„ Defective indoor unit PCB
îš„ Defective outdoor unit inverter PCB
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