Carrier 40MAQ Series - IPM Continuity Check

50
IPM continuity check
Turn off the power, let the large capacity electrolytic capacitors discharge completely, and dismount the IPM. Use a digital tester to measure
the resistance between P and UVWN; UVW and N.
Digital tester
Normal resistance
value
Digital tester
Normal resistance
value
(+)Red (-)Black
∞
(Several MΩ)
(+)Red (-)Black
∞
(Several MΩ)
P
N U
N
U V
V W
W (+)Red
Indoor AC Fan Motor
Measure the resistance value of each winding by using the tester .
Fig. 51 – Indoor AC Fan Motor
Terminal
Resistance Value
Black - Red 100.5Ω±8%
(20°C /68°F) (Brand: Weiling)
100Ω±8%
(20°C /68°F) (Brand: Dayang)
White ‐ Black 64.5Ω±8%
(20°C /68°F) (Brand: Weiling)
68.5Ω±8%
(20°C /68°F) (Brand: Dayang)