14
WATER HEATER SERIES
OPERATOR’S MANUAL
TROUBLESHOOTING
97-6149 • 97-6162 • 97-6133 • Rev. 3/04
PROBLEM
POSSIBLE CAUSE
SOLUTION
BURNER WILL NOT
LIGHT
Disconnected or short in electrical
wiring
All wire contacts should be clean and tight. No
breaks in wire.
Burner motor thermal protector
tripped
If tripped, check voltage, connections and
extensions for cause. Check fuel pump shaft
rotation for binding, causing motor to overheat.
ON/OFF switch defective
Check continuity through burner switch.
Heavy sooting on coil and burner,
can cause interruption of air flow and
shorting of electrodes
Clean as required.
Improper electrode setting
Clean and test according to diagram in
operator's manual.
Fuel not reaching combustion
chamber
Check fuel pump for proper flow. Check
solenoid flow switch on machines with spray
gun control for proper ON/OFF flow switch.
Fuel solenoid malfunction
Check by placing screwdriver inside coil then
turn machine on, open spray gun and check for
magnetic pull.
Clogged burner nozzle
Replace.
Water not turned on
Turn on water to activate burner flow switch.
Flow switch malfunction
Remove, test for continuity and replace as
needed.
MACHINE SMOKES
Improper fuel or water in fuel
Drain tank and replace contaminated fuel.
Low fuel pressure
Adjust fuel pump pressure to specifications.
Air leaks in fuel lines
Check fuel lines for leaks or air bubbles.
Tighten or replace as needed.
Plugged or dirty burner nozzle
Replace.
Faulty burner nozzle spray pattern
Replace nozzle.
Heavy accumulation of soot on coils
and burner assembly
Remove coils and burner assembly. Clean
thoroughly.
Misaligned electrode
Realign electrodes to specifications.
Fuel filter partially clogged
Replace as needed.
Obstruction in smoke stack
Check for insulation blockage or other foreign
objects.
Soot build-up on coils
Clean coils with soot remover.
Lime build-up in coils
Clean inside of coils using coil cleaner.