When using a digital multimeter to measure the winding resistance of an outdoor fan motor, first set the multimeter to a 2k electrical barrier, and connect the two test leads to the two wiring terminals of the winding. The value displayed on the display screen is the resistance of the measured winding.

The outdoor fan motor of the air conditioner mostly uses an axial flow motor. The measurement method is described below.

(1) Detection of motor windings

When using a digital multimeter to measure the winding resistance of an outdoor fan motor, first set the multimeter to a 2k electrical barrier, and connect the two test leads to the two wiring terminals of the winding, respectively. , It means that it is open; if the resistance is too small, it means that the winding is short-circuited.

(2) Detection of leakage

Put the digital multimeter in the 200MΩ block, one test lead is connected to the winding lead of the motor, and the other test lead is connected to the housing of the motor. The resistance value should be infinite when normal. Then it need to be dried