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Only for training and service purposes
Part 4 Trouble Shooting
6) Troubleshooting CH24, CH25
CN TRNAS1
CN PRESS
TRANS1
60Hz, DC12V
24
25
Press S/W Open
Input voltage
• Low / High press
S/W open.
•
Abnormal Input voltage
(140VAC or lower 300VAC
or higher).
• Check the connection of “CN_Press”.
• Check the components.
• Check the power source.
• Check the components.
Error
code
Title Cause of error Check point & Normal condition
Check Point
• CH 24
1. Check the connection of “CN_PRESS”
2. Check the installation conditions for over loads.
3. Check that the SVC Valve is open.
4. Check for the leakage of refrigerant.
• CH 25
1. Check the power source.
2. Check the components
(Trans1, B/Diode, Diode, Resistance)