Carrier 40MBFAQ Service Manual

40MBFAQ: Service Manual
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
37
IPM Continuity Check
1. Turn off the outdoor unit and disconnect the power supply.
2. Discharge the electrolytic capacitors and ensure the energy-storage unit(s) have been discharged.
3. Disassemble the outdoor PCB or disassemble the IPM board.
4. Measure the resistance value between P and U(V, W, N); U(V, W) and N.
Table 11 — Digital Tester
DIGITAL TESTER RESISTANCE VALUE DIGITAL TESTER RESISTANCE VALUE
(+)Red (-)Black

Several M
(+)Red (-)Black

Several M
P
NU
N
UV
VW
W-
Electricity remains in capacitors even when the power supply is off.
Ensure the capacitors are fully discharged before troubleshooting.
WA RN I N G
WA RN I N G

Carrier 40MBFAQ Specifications

General

Brand	Carrier
Model	40MBFAQ
Category	Heater
Language	English