SiBE31-801_C Troubleshooting by Indication on the Remote Controller
Troubleshooting 244
4.15 “
E3
” Outdoor Unit: Actuation of High Pressure Switch
Remote
Controller
Display
E3
Applicable
Models
RTSQ8P~16P (Outdoor Unit), BTSQ20P (Function Unit)
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 high pressure switch 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 main PCB (A1P)
Instantaneous power failure
Faulty high pressure sensor
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