Specifications

SiBE341027 Troubleshooting by Remote Controller
Service Diagnosis 105
2.3 Actuation of High Pressure Switch or Pressure Switch
Remote
Controller
Display
E2
Applicable
Models
RQYQ-PY1B
Method of Error
Detection
The error is detected by the relationship between "pressure detected by the high pressure
sensor" and "operation of the high pressure switch or pressure switch".
Error Decision
Conditions
When the high pressure switch or pressure switch operates under low pressure detected by the
high pressure sensor during compressor operation.
Operating pressure of high pressure switch: 4.0MPa
Operating pressure of pressure switch: 3.3MPa
Supposed
Causes

Defective high pressure sensor

Defective connection of connector for high pressure switch or pressure switch

Defective high pressure switch or pressure switch
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
YES
NO
NO
YES
Check the outdoor unit in the
monitor mode.
Replace the high pressure
sensor.
Connect the connector
correctly.
YES
NO
Replace the high pressure
switch and/or pressure
switch.
Replace the main PCB
(A1P) of the unit concerned.
Are the
characteristics of the
high pressure sensor
normal?
Is the connector
connection on
PCB concerned
normal?
Are there continuity
at the high pressure
switch and pressure
switch?