water heater series operator's manual - Shark Pressure Washers

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