Troubleshooting for Outdoor Unit SiBE18-821_C
384 Troubleshooting
7.2 Actuation of High Pressure Switch
Remote
Controller
Display
E3
Method of
Malfunction
Detection
Abnormality is detected when the contact of the high pressure switch opens.
Malfunction
Decision
Conditions
When the high pressure switch activation count reaches the number specific to the operation
mode
(Reference) Operating pressure of high pressure switch
Operating pressure: 4.0 MPa
Reset pressure: 3.0 MPa
Supposed
Causes
Actuation of high pressure switch
Defective high pressure switch
Defective outdoor unit PCB
Instantaneous power failure
Defective high pressure sensor
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