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Abnormal Low Pressure (Detected by the LPS) (E4)
Error code: E4
Error generation: The error is generated when the low-pressure switch is activated during compressor operation.
Causes The possible causes are:
- Malfunctioning refrigerant piping circuit
- Malfunctioning low-pressure switch
- Disconnected or broken low-pressure switch harness
- Malfunctioning low-pressure switch connector connection
- Malfunctioning outdoor unit
B.
- Stop valves are not opened
The table below contains the preset LPS values.
Applicable units
RR/RQ71~125B
Abnormal
< -0.3 bar
Reset
> +0.5 bar