Troubleshooting by Remote Controller Si20-701_B
173
3.31
E4
Low Pressure System
Abnormality
Remote Controller Display
E4
Applicable Models
RZQ-C
Method of Error Detection
îš„ Detect errors by the low pressure sensor.
Error Decision Conditions
îš„ When the detection pressure is the following value
Actuating pressure: 0.07MPa
Supposed Causes
îš„ Defective low pressure switch
îš„ Disconnection of the wire harness of the low pressure
switch
îš„ Defective connection of the connector of the low
pressure switch
îš„ The refrigerant piping circuit abnormality
îš„ The stop valve is not opened
îš„ Defective outdoor unit main PCB
îš„ Refrigerant shortage
To Next Page
Loading...
Need help?
General
