E3" Indoor Unit: Actuation Of High Pressure Switch - Daikin ERSQ 011AAV1 Service Manual

Troubleshooting by Indication on the Remote Controller
3.14 "E3 " Indoor Unit: Actuation of High Pressure Switch
E3
Remote Control
Display
Subcode 12
Applicable
All indoor units
Models
Method of Abnormality is detected when the contact of the high pressure protection switch opens.
Malfunction
Detection
Malfunction
Error is generated when the HPS activation count reaches the number specific to the operation
Decision mode.
(Reference) Operating pressure of high pressure switch
Conditions
Operating pressure: 3.8MPa
Reset pressure:
Supposed
Causes
220V. Use correct precautions when servicing.
146
2.7MPa
Actuation of indoor unit high pressure switch
Defect of High pressure switch
Defect of Indoor unit PC board (A4P)
Faulty high pressure sensor
Refrigerant blockage
Water blockage
Thermal cut out error (Q2L)
Warning: CAPACITOR SHOCK HAZARD. The capacitors (top surfaces) can hold up to
ESIE09-08
Troubleshooting