E4" Actuation Of Low Pressure Sensor: Single Phase C Series - Daikin SkyAir Service Manual

SiBE28-804
5.20 "E4" Actuation of Low Pressure Sensor: Single phase C
Series
E4
Remote
Controller
Display
Applicable RZQ71~140C7V1B, RZQS71~140C7V1B
Models
Method of [In cooling]
Malfunction
[In heating]
Detection
Malfunction [In cooling]
Decision
Conditions
Supposed
Causes
Troubleshooting
Detect malfunctions by the pressure sensor (S1NPH).
Detect malfunctions by the heat exchanger distribution pipe thermistor (R4T).
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 remained 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)
Troubleshooting by Remote Controller Display / LED Display
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