447
Merlo 447: UGS Blocked
Issue description
The system has detected that the UGS is blocked. This may prevent normal operation of the affected circuit. Further investigation is required to determine the cause of the blockage.
Check the cause
The condition of the UGS
The presence of obstructions or debris
The functionality of the component identified by this code
Repair steps
Inspect
Visually inspect the UGS for any visible blockages or obstructions.
Clean
If blockage is found, clean the UGS according to the service manual procedures.
Test
After cleaning, test the system to ensure the UGS is functioning properly.
Parts you might need
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