X93;E4” Actuation Of Low Pressure Sensor - Daikin EHYHBH05AAV3 Service Manual

Error Codes: Outdoor Units

“E4” Actuation of Low Pressure Sensor

4.3
1
Remote controller
display
Method of
malfunction
detection
3
Malfunction
decision conditions
4
Supposed causes
5
Part 4 – Troubleshooting
E4
[In cooling]
Detect malfunctions by the pressure sensor (S1NPH).
[In heating]
Detect malfunctions by the heat exchanger distribution pipe thermistor (R4T).
[In cooling]
When the detection pressure is the following value:
0.12 MPa or less continues for 5 minutes
When the saturated pressure equivalent to the detection temperature is the following value:
0.12 MPa or less continues for 5 minutes
The stop valve remains closed
Faulty pressure sensor and intermittent harness
Faulty outdoor PC board
Abnormal drop of low pressure
(inadequate refrigerant)
(Abnormal refrigerant piping system (liquid pipe system))
(Faulty electronic expansion valve)
106
ESIE13-02A