Midea ATOM MDV-V56WDHN1(AtB)

Atom B Series VRF 50/60Hz
65
Part
6
-
Diagnosis and Troubleshooting
2.17 PL: Radiator surface high temperature protection (For all models)
2.17.1 Digital display output
PL
2.17.2 Description
 Radiator surface high temperature protection.
 The system stops running.
 Error code is displayed on outdoor unit PCB.
2.17.3 Trigger / recover condition
 Trigger condition: Radiator surface temperature TF≥90℃.
 Recover condition: Radiator surface temperature TF≤84℃.
 Reset method: Resume automatically.
2.17.4 Possible causes
 Refrigerant leakage/ Poor condenser heat exchange/ System blockage.
 The connection between refrigerant cooling tube and radiator is loose.
 Main PCB damaged.
2.17.5 Procedure
PL
Power off for 3 minutes and then repower on to check
whether PL fault is cleared
Yes
No
Spot check the 8
th
TF temperature to confirm whether
TF is over 90℃ in outdoor unit operation period
No
Yes
Spot check the 9
th
TL temperature to confirm whether TL
is too high ,and Inspect whether the refrigerant cooling
tube and radiator is contacted well
No
Yes
System or installation problem
Main control board damaged