Troubleshooting for Outdoor Unit SiEN18-622
360 Troubleshooting
7.2 Actuation of High Pressure Switch
Remote Control
Display
E3
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection
Abnormality is detected when the contact of the high pressure protection switch opens.
Malfunction
Decision
Conditions
Error is generated when the HPS activation count reaches the number specific to the operation
mode.
(Reference) Operating pressure of high pressure switch
Operating pressure:4.0MPa
Reset pressure: 3.0MPa
Supposed
Causes
Actuation of outdoor unit high pressure switch
Defect of High pressure switch
Defect of outdoor unit PCB
Instantaneous power failure
Faulty high pressure sensor
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