Troubleshooting by Remote Controller
SiUS281117
Service Diagnosis
131
2.23 High Pressure Abnormality
Remote
Controller
Display
E3
Applicable
Models
RZR, RZQ
Method of Error
Detection
Abnormality is detected when the contact of the high pressure switch opens.
Error Decision
Conditions
Error is generated when the S1PH (High pressure switch) activation count reaches the number
specific to the operation mode.
(Reference) Operating pressure of high pressure switch
Operating pressure: 580 psi
Reset pressure:
435 psi
Supposed
Causes
Actuation of outdoor unit high pressure switch
Defective high pressure switch
Defective outdoor unit PCB
Instantaneous power failure
Defective high pressure sensor