E4" Low Pressure System Malfunction - Daikin SkyAir RZQ200 · 250C7Y1B Service Manual

Diagnosis by Remote Controller

4.17 "E4" Low Pressure System Malfunction

E4
Remote
Controller
Display
Applicable RZQ
Models
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
122
Detect malfunctions by the low pressure sensor (S1NPL).
When the detection pressure is the following value
Actuating pressure: 0.07MPa
Failure of the low-pressure switch
Disconnection of the wire harness of the low-pressure switch
Defective connection of the connector of the low-pressure switch
Malfunction of the refrigerant piping circuit
Failure to open the stop valve
Defective outdoor unit main PC board (A1P)
Refrigerant shortage
SiBE26-701
Troubleshooting