You are here: Home > Questions Pulse valve failure and trouble sho... Pulse valve failure and trouble shooting Common Failure and trouble shootingUse PeriodFailure phenomenaPossible reasonTroubleshooting All the valves cann't be open, but the pilot can workCheck if the gas dome pressure is too lowCheck if leakingSome valve cann't work, but the others work normallyCheck the circuit and coilReplace the accessoriesAll the valves cann't be closed, leak, Das dome no pressureY - valve, some valves leak who connect with the same dome, Cause the feint that all the valve leaking.Check if leakingZ - valve,inlet and out let installed oppositeRe-installSome valves cann't be closed,leakThere is dirt or debris on the diaphragm, moving iron core cann't move.Check the diaphragm, and check if the diaphragm is broken, check the moving iron core and air lockerA valve closed slowlyThe diaphragm orfice been blockedDredge the diaphragm orifice Some valves leak, diaphragm cann't be closed tightly and the valve keep openThere is dirt or debris on the diaphragm, Pilot broken and moving iron core cann't move.Check the diaphragm, and check if the diaphragm is broken, check the moving iron core and air locker, replace the accessories if neccessoryCoil is hot and burnElectricity turn on long timeCheck the control systermValve don't work with the electricityDiaphragm broken or diaphragm orfice been blockedReplace the accessories in timeWhen the temprature is below -20℃, maybe the valve will leak or cann't be openIce in the valve because the low tempraturePay attention to maintaining proper tempratureUse PeriodWork pressure must be strictly controlled to within 0.2-0.6MPa and being stable relatively.Before the valve installed, it is necessary to completely clear away any impurities in the gas domeCompressed air must be clean and dry air supply