58
Specifications subject to change without notice. SG-38MARB-01
IPM Continuity Check
1. Turn off the outdoor unit and disconnect the power supply.
2. Discharge the electrolytic capacitors and ensure all energy has been discharged.
3. Dissemble the outdoor PCB or dissemble the IPM board.
4. Measure the resistance valve between P and U(V,W,N); U(V,W) and N.
Fig. 45 — Testing
Digital Tester
Resistance Valve
Digital Tester
Resistance Valve
(+) Red
(-) Black
(Several M
)
(+) Red
(-) Black
(Several M
)
P
N
U
N
U
V
V
W
W
-
ELECTRICAL SHOCK HAZARD
Electricity remains in the capacitors even when the power is
off.
Ensure the capacitors are fully discharged before
troubleshooting.
WARNING