Troubleshooting by Indication on the Remote Controller ESIE09-08A
164 Troubleshooting
3.17 “E4 ” Indoor Unit: Actuation of Low Pressure Sensor
Remote Control
Display
E4
Subcode 6
Applicable Models All indoor units
Method of
Malfunction
Detection
Abnormality is detected by the pressure value with the low pressure sensor.
Malfunction
Decision Conditions
Error is generated when the low pressure is dropped under specific pressure.
Operating pressure: 0.07MPa
Supposed Causes Abnormal drop of low pressure (Lower than 0.07MPa)
Defect of low pressure sensor
Defect control PC board (A4P)
Stop valve is not opened.
Troubleshooting Warning: CAPACITOR SHOCK HAZARD. The capacitors (top surfaces) can hold up to 220V. Use
correct precautions when servicing.
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