Daikin RZQS100B7V3B [198/344] E4 actuation of low pressure sensor single phase b series

Daikin RZQS100B7V3B [198/344] E4 actuation of low pressure sensor single phase b series
SiBE27-702 Troubleshooting by Remote Controller Display / LED Display
Troubleshooting 185
5.17 E4” Actuation of Low Pressure Sensor: Single phase B
Series
Remote
Controller
Display
E4
Applicable
Models
RZQ71B9V3B, RZQS71·100B7V3B
Method of
Malfunction
Detection
Actual value of the low pressure is continuously measured using the low pressure sensor.
Malfunction
Decision
Conditions
Error is generated when the low pressure is dropped under specific pressure.
Supposed
Causes
Abnormal drop of low pressure (Lower than 0.15MPa)
Defect of low pressure sensor
Defect of outdoor unit PC board
Stop valve is not opened.

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