User Guide

50 Hanover Road, Florham Park, New Jersey 07932 www.ascovalve.com
Page 4 of 4 I&M No.V8500R3
Troubleshooting Chart
Trouble Possible Cause Remedy
Valve operation is sluggish
Solenoid coil short, or wrong voltage.
Damaged core assembly.
Dirt or other foreign matter restricting
operation of valve.
Check coil voltage. Replace solenoid
coil.
Replace valve.
Replace valve and install strainer
upstream of valve.
Valve fails to open
Timer, limit controls or other devices not
energizing circuit.
Damaged core assembly preventing
core operation.
Solenoid coil short, burned-out or
wrong voltage.
Dirt, pipe compound or other foreign
matter restricting operation of valve.
Check circuit for limit control operation,
blown fuse, short circuit and
loose wiring.
Replace valve.
Replace with solenoid coil of correct
voltage.
Replace valve and install strainer
upstream of valve.
Valve fails to close
Damaged core assembly preventing
core operation.
Dirt, pipe compound or other foreign
matter restricting operation of valve.
Limit controls improperly installed to
grounded side.
Replace valve.
Replace valve and install strainer
upstream of valve.
Wire controls in hot side of circuit.
Valve chatters"
Valve supply voltage is improper
(too low)
Dirt or chips between top of core
assembly and solenoid base
sub-assembly
Apply correct voltage to valve.
Replace valve and install strainer
upstream of valve.