LG Single A Svc Manual page 77

5. Trouble Shooting
6.14 Check code Trouble shooting CH24
Display
Title
code
24
Press S/W Open
Check Flow Chart
Is the wire connection
normal ?
Yes
Is the soldering
state of connector is
normal?
Yes
Is the SVC Valve
opened ?
Yes
Check the leakage of
refrigerant.
Check Pressure of
suction pipe
Check Pressure of
discharge pipe
Is it normal ?
Yes
Change main PCB
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Only for training and service purposes
Cause of error
• Low / High press
S/W open.
No
Correct connection
No
Re-soldering component
No
Open SVC Valve
No
Re-vaccuming system
& Re-charging
- 76 -
Check point & Normal condition
• Check the connection of "CN_PRESS"
• Check the SVC V/V open.
• Check the leakage of refrigerant.
❊ Pressure switch table
Switch Low pressure switch
Spec 0.03 Mpa
Model
High pressure switch
4.3 Mpa
AUUW243D[LUU245HV]
AUUW423D[LUU425HV]
CN_PRESS
LGE Internal Use Only