FBD 564 - Troubleshooting Solenoids

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• Manually activate “faulty” solenoid, if doesn’t properly actuate
• Disconnect harness from solenoid and measure supply power, range
from 22VAC to 28VAC
• 0 volt indicates faulty relay board
• 22VAC to 28VAC indicates faulty solenoid
• Faulty “shorted” solenoid will lead to a burned relay board. When
required check and replace relay board.
Troubleshooting Solenoids