Mars Comfort-Aire Century VCD-SA Series Service Manual page 156

Resistance Value
Blue-Red
Blue-Black
Red-Black
Note: The picture and the value are only for reference, actual condition and specific value may vary.
8.3 IPM Continuity Check
WARNING
Electricity remains in capacitors even when the power supply is off.
Ensure the capacitors are fully discharged before troubleshooting.
1. Turn off outdoor unit and disconnect power supply.
2. Discharge electrolytic capacitors and ensure all energy-storage unit has been discharged.
3. Disassemble outdoor PCB or disassemble IPM board.
4. Measure the resistance value between P and U(V, W, N); U(V, W) and N.
KTF310D43UMT
Ω
0.65Ω
 Troubleshooting
ATN150D30UFZA
KTM240D46UKT2
KTM240D43UKT
1.03Ω 1.04Ω

Service Manual - VCDxxSA
KTQ420D1UMU
ATQ420D1SN5A1
EAPQ420D1UMUA
EAPQ440D1UMUA
0.37Ω