Airwell AWSI YIFA060–H13 Service Manual page 51

11.6 Electric components malfunction inspection
Component
No
name
1 Compressor
2 Control board
3 Contactor
4-ways valve
4
winding
5 Capacitor
6 Sensor
7 Motor
1. Using multi-meter ohm phase, there is correct resistance value among windings
(single phase compressor refers to specification, three phase compressor
resistance approximately equal), resistance of winding
should be infinite.
1. 1Check if any connection part of PCB loosen or drop off, printed tinsel and
components have any burn, fade, breaking off or aging phenomenon, all joints
exist short circuit phenomenon etc.
2. Test the circuit board system in the term of voltage, pulse on, resistance
variation, by using testing meter.
3. Judge the output and input is normal or not according to electric principle
diagram
1 Press the contactor by hand, the contactor reacts immediately and
without question
2 The contacting point of contactor has no burn and melt phenomenon
3 The winding has resistance value below 1000, but cannot be nil or infinite
The winding has resistance value below 1000, but cannot be nil or infinite
1 No expansion phenomenon apparently
2 Measure capacitor by using capacitor phase of multi-meter( if the multi-meter has
no capacitor phase, use ohm phase, contact the two
terminal of meter to two feet of capacitor, and quickly switch positive pole and
negative pole and reconnect, the resistance should display from nil to infinite
quickly. The resistance can't change is always nil or infinite).
1. Using multi-meter to measure resistance, find out temperature according to
resistance table, the temperature should
sensor temperature.
2. Resistance cannot be nil or infinite
1 No burning trace apparently
2 Using multi-meter ohm phase, there is correct resistance value among
windings (single phase compressor refers to specification, three phase
compressor resistance approximately equal), resistance of winding
should be infinite.
Inspection methods
TRUBLESHOOTING
accord with
50 | S e r v i c e M a n u a l