118 Multi type Air Conditioner
5) Troubleshooting CH21
Ω
Comp
Copper
pipe
Resistance(
Ω
) at 20°C
Resistance(
Ω
) at 20
°
C
V-W
W-U
U-V
Terminal
0.8
0.8
0.8
Constant comp.
V-GND
W-GND
U-GND
Terminal
2M
Ω
2M
Ω
2M
Ω
Constant comp.
V
U
W
Ω
Comp
21
DC Peak
• Instant over current
• Over Rated current
• Poor insulation of IPM
• An instant over current in the U,V,W phase
- Comp lock
- The abnormal connection of U,V,W
• Over load condition
- Overcharging of refrigerant
- Pipe length.
• Poor insulation of compressor
Display
code
Title
Cause of error
Check point & Normal condition
Check Point
1. Check the wire connection. (U,V,W)
2. Check the load condition. (Refrigerant, Pipe length, …)
→
Adjust the load condition
3. Check the electricity leakage of the compressor.
→
Normal : Over 2M
Ω
.
4. Check the resistance of compressor.
→
Normal : 0.8
Ω
(Cons.)
→
No difference at each terminal.
5. Check the insulation from water at IPM part.
→
Check the trace of water.
6. Check the IPM circuit.
Troubleshooting Guide
Summary of Contents for L8UC100BFA0
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Page 95: ...Service Manual 95 L8UH100BFA0 L8UC100BFA0 Schematic Diagram 2 Outdoor Unit ...
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Page 98: ...98 Multi type Air Conditioner Schematic Diagram Low static BT BT1 chassis ...
Page 99: ...Service Manual 99 4 way TE TF TD chasis 58 B Schematic Diagram ...
Page 100: ...100 Multi type Air Conditioner Schematic Diagram 2 Display ASSEMBLY 1 Split Type ...
Page 153: ...P No 3828A22009L October 2005 Printed in Korea ...
