Daikin R71FUV1 Service Manual page 163

Si20-701_B
Remote Controller Display
E3
Applicable Models
RZQG71, 100L
Method of Error Detection
[In cooling]
The error is detected by the outdoor unit intermediate
heat exchanger thermistor (R5T).
[In heating]
The error is detected by the indoor unit intermediate
heat exchanger thermistor (R3T).
Error Decision Conditions
[In cooling]
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]
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
Dirt and blockage of the outdoor unit heat exchanger
Defective outdoor unit fan motor
Defective indoor unit fan motor
Defective electronic expansion valve
Refrigerant overcharge
Defective indoor unit PCB
Defective outdoor unit inverter PCB
156
Troubleshooting by Remote Controller