Si20-701_B Troubleshooting by Remote Controller
148
3.25
E3
Abnormally High Pressure
Level (HPS)
Remote Controller Display
E3
Applicable Models
RZ(Y)
Method of Error Detection
The error is detected when the contact of the high
pressure protection switch opens.
Error Decision Conditions
The error is generated when the HPS activation count
reaches the number specific to the operation mode.
Supposed Causes
Disconnection of connector or terminal on outdoor unit
PCB
Dirty outdoor unit heat exchanger
Defective outdoor unit fan
Refrigerant overcharge
Defective high pressure switch
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