Outdoor Unit: Actuation Of High Pressure Switch - Panasonic Urban Multi MX1R Series Service Manual

Troubleshooting
3.15 Outdoor Unit:
E3
Remote Controller
Display
„ Actuation of outdoor unit high pressure switch
Supposed Causes
„ Defect of outdoor unit PC board (A1P)
„ Instantaneous power failure
Troubleshooting
∗ 1: Actuation of high pressure switch (HPS)
The outdoor unit PC board's connector is disconnected.
Is the outdoor unit heat exchanger dirty?
Defect of outdoor fan
Is the refrigerant over-charged?
512
Actuation of High Pressure Switch
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Contact
YES
S1PH (X10A) or S2PH
(X11A) is open.
NO
Operation
YES
is normal when turned on
again by remote
controller.
NO
Troubleshooting UM Combination "MA1R Series" Using R-407C
PACD011001C2
Actuation of high pressure switch. ∗1
There was an instantaneous power
failure or a past safety device actuated.
Re-check refrigerant system.
Replace outdoor unit PC board A1P.
(VF041)