E2 " Outdoor Unit: Actuation Of High Pressure Switch - Daikin RQYQ140-180PY1 Service Manual

Troubleshooting by Remote Controller
E2
" " Outdoor Unit: Actuation of High Pressure Switch
2.7
E2
Remote
Controller
Display
Applicable RQYQ-PY1
Models RQEQ-PY1
Method of Malfunction is detected by the relationship between "pressure detected by the high pressure
sensor" and "operation of the high pressure switch".
Malfunction
Detection
Malfunction When the high pressure switch operates under low pressure detected by the high pressure
sensor during compressor operation.
Decision
Operating pressure of high pressure switch: 0.07MPa
Conditions
Supposed
Causes
Troubleshooting
111
Defect of high pressure sensor
Defect of connection of connector for high pressure switch
Defect of high pressure switch
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Check the outdoor unit in the
monitor mode.
Are the
characteristics of the
high pressure sensor
normal?
YES
Is the
connector connection
on PCB concerned
normal?
YES
Is there
continuity at the high
pressure switch?
YES
NO
NO
NO
SiBE341001
Replace the high pressure
sensor.
Connect the connector
correctly.
Replace the high pressure
switch.
Replace the main PCB
(A1P) of the unit concerned.
Troubleshooting