14 TROUBLE SHOOTING GUIDE
REMEDY
PROBLEM
PROBABLE CAUSE*
Turn switch on / press reset switch.
Pull trigger. Burner should fire only when trigger
is pulled.
Adjust Thermostat up.
Check & clean ground connections
Turn gas valve on
Check for 24 VAC between pilot valve (PV) and PV/
MV. Valve will operate between 20.5 and 28.5 VAC.
Remove orifice & clean.
Check for 24 VAC incoming @ 24v & 24v
ground. (If you dedect voltage to module, but not
through module, replace).
Check for 24v output. If no voltage, replace.
Replace.
Replace.
Replace.
Replace.
Test for spark. Test for continuity between
ignition wire and ground.
WARNING:
High voltage ignitor can cause
electrical shock.
If no VAC @ valve, replace module. If you get
voltage, replace valve.
Check for controls continuity to main valve
(thermostat, pressure switch, flow switch)
Check for loose ignition wires
Refer to installation guidelines (consult with
qualified gas technician)
Assure good ground.
Replace module.
Protect from windy conditions / install draft
diverter.
Turn gas off. Call gas supplier
.
Replace module.
Turn main gas valve off. Replace valve.
Replace.
Clean or replace spray nozzle, descale coil,
remove obstructions.
Lower gas pressure.
Replace spray nozzle with proper size.
.
Increase gas pressure or install additional jets
Prevent down draft with installation of down
draft diverter. Prevent side draft with
nonflammable barrier.
Turn machine off immeadiately, Replace flow,
vacuum, pressure, or temperature switches.
Turn gas off - replace main gas valve.
Replace valve: Do not attempt to repair or clean
out.
Replace module: Do not attempt to repair.
Pilot will not light, burner will not fire.
Pilot lights, but burner will not fire.
Burner fires, but goes out.
NG or LP odor is present.
WARNING: Check all NG
connections with soap solution
before operation.
Discharge water temperature too high.
Discharge water temperature not
reaching maximum operating
temperature.
Burner continues to fire even when
water is not being sprayed.
Valve has had water sprayed on it.
Has been submerged in water and
does not work.
Ignition module has been subjected to
water or moisture.
Heating/Burner System-Natural Gas or LP Fired
WARNING Disconnect MV Wire At Gas Valve Before Trouble Shooting.
Burner switch not on.
Trigger not pulled.
Thermostat not turned up.
Poor Ground
Gas valve turned off.
No voltage to valve.
Pilot orifice plugged.
Defective ignition module.
Defective vacuum switch.
Defective pressure switch.
Defective transformer.
Defective flow switch.
Defective thermostat.
Faulty rocker switch.
Ignitor not working.
Check for 24 VAC between main valve (MV)
and PV/MV when trigger pulled & unit on.
Failure to complete circuit to main valve
Damaged or loose pilot assembly
Insufficient or excessive gas pressure
Check for continuity between ignition module
ground and pilot assembly ground.
Faulty ignition module.
Excess draft.
Gas leak ahead of valve.
Lockout not working.
Valve stuck.
Faulty thermostat.
Water restriction.
Incoming gas pressure to high.
Worn spray nozzle.
Gas pressure too low.
Draft under burner manifold.
Faulty burner control circuit .
Main gas valve stuck open.
Flood or accidental spraying.
Flood or accidental spraying.
