E3" Outdoor Unit: Actuation Of High Pressure Switch - Daikin ALTHERMA HT ERSQ 011 AA Service Manual

ESIE09-08A

3.14 "E3" Outdoor Unit: Actuation of High Pressure Switch

E3
Remote Control
Display
Subcode 1
Applicable Models ER*Q 011~016*
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 mode.
Decision Conditions (Reference) Operating pressure of high pressure switch
Operating pressure:
Reset pressure:
 Actuation of outdoor unit high pressure switch
Supposed Causes
 Defect of High pressure switch
 Defect of outdoor unit PC board (A1P)
 Instantaneous power failure
 Faulty high pressure sensor
Troubleshooting
Troubleshooting by Indication on the Remote Controller
4.0MPa
3.0MPa
157