Panasonic CU-8ME1XPK - Outdoor Unit: Actuation of High Pressure Switch

Troubleshooting PACD011001C2
170 Troubleshooting Urban Multi “MX1, ME1 Series” Using R-22
3.15 Outdoor Unit: Actuation of High Pressure Switch
Remote Controller
Display
E3
E3E3
E3
Supposed Causes
„
Actuation of outdoor unit high pressure switch
„
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?
Operation
is normal when turned on
again by remote
controller.
Replace outdoor unit PC board A1P.
Actuation of high pressure switch. ∗1
YES
YES
There was an instantaneous power
failure or a past safety device actuated.
Re-check refrigerant system.
NO
NO
(VF041)
Contact
S1PH (X10A) or S2PH
(X11A) is open.
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.