74
8.6.3 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.
Digital Tester
Normal
Resistance value
Digital Tester
Normal
Resistance value
(+) Red
(-) Black
∞
(Several M
Ω
)
(+) Red
(-) Black
∞
(Several M
Ω
)
P
N
U
N
U
W
W
V
V
-
Содержание HCNI 533
Страница 1: ...MARK HEAT PUMP SPLIT UNIT 0662680 Technical manual EN...
Страница 2: ...2...
Страница 16: ...16 3 4 Outdoor Units Printed Circuit Board Diagram HCNMX 353 HCNI 533...
Страница 81: ...81 EN...
Страница 82: ...82...
Страница 83: ...83 EN...