SYMPTOM
Burner will not ignite.
Water is leaking under
heat exchanger coil.
28
PROBABLE CAUSE
Burner switch not in ON position.
Thermostat knob is OFF.
Trigger gun is closed.
Vacuum or pressure switch failure.
Gas valve safety lock-out.
Inadequate gas supply.
Gas line obstruction.
Ignition module failure.
Gas valve failure.
Condensation.
Ruptured heat exchanger coil.
TROUBLESHOOTING
REMEDY
Check switch position.
Check thermostat knob position.
Open trigger gun for pressure.
Repair or replace.
Release trigger on gun or switch burner switch
"OFF" for 60 seconds.
Check gas supply.
Check gas pressure.
Replace.
Replace.
May occur in cool, humid conditions. coil. (See
"IMPORTANT" notation.)
Replace
Operator's Manual