183
5.Electric components malfunction inspection
No
Component
name
Inspection methods
1
Compressor
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.
2
Control board
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
3
Contactor
4.
Press the contactor by hand, the contactor reacts immediately and without
question
5.
The contacting point of contactor has no burn and melt phenomenon
6.
The winding has resistance value below 1000, but cannot be nil or infinite
4
4-ways valve
winding
The winding has resistance value below 1000, but cannot be nil or infinite
5
Capacitor
7.
No expansion phenomenon apparently
8.
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).
6
Sensor
9.
Using multi-meter to measure resistance, find out temperature according to
resistance table, the temperature should accord with sensor temperature.
10. Resistance cannot be nil or infinite
7
Motor
11. No burning trace apparently
12. 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.
Содержание ICC(ICA)-**HR-SA6-NI
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Страница 75: ...155 Introduction of Control Board QRD SW3F HCE1 outdoor unit board sockets Power supply 380V 415V ...
Страница 104: ...186 7 Failure analysis Wired controller communication failure ...
Страница 105: ...187 Communication failure between indoor and outdoor unit ...
Страница 106: ...188 Outdoor protection phase sequence ...
Страница 107: ...189 Cooling high pressure protection ...
Страница 108: ...190 Heating high pressure protection ...
Страница 109: ...191 Cooling low pressure protection ...
Страница 110: ...192 Heating low pressure protection ...
Страница 111: ...193 Cooling exhaust temperature protection ...
Страница 112: ...194 Heating exhaust temperature protection ...
Страница 113: ...195 Refrigerant shortage or four way valve failure protection ...
Страница 114: ...196 Sensor failure protection ...
Страница 115: ...197 No action after power on ...
Страница 116: ...198 Poor effect ...
Страница 117: ...199 ...
Страница 118: ...200 Abnormal sound or viberation ...
Страница 119: ...201 ...
Страница 120: ...202 Abnormal odor ...
Страница 121: ...203 Air switch action when air conditioner starting up ...
Страница 122: ...204 Air conditioner water leakage ...