Troubleshooting by Indication on the Remote Controller
104
3.25
E4
Abnormal Suction
Pressure
Remote Controller Display
E4
Applicable Models
VRV-WII, -WIII, III, III-S and III-Q Series
Method of Error Detection
Abnormality is detected by the pressure value with the
low pressure sensor.
Error Decision Conditions
Error is generated when the low pressure drops while the
compressor is in operation.
Supposed Causes
Abnormal drop of low pressure
Defective low pressure sensor
Defective outdoor unit PCB
Stop valve is not opened.
Clogged filter
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