Replace a defected valve solenoid by unscrewing the bad solenoid. Attach the new solenoid in it's place and rewire using grease caps to finish the connections.
Unscew the defected solenoid
Screw in the new solenoid
Problem
Possible Causes:
Remedy:
A zone valve will not turn on
Burned out valve solenoid.
Replace the solenoid.
Fuses blow
Faulty wiring or solenoid.
Replace the solenoid, check and repair faulty wiring.
