Shark HPB-3520 - Manual (Page 15)

97-6068, 97-6131 • REV. 3/06
15
PRESSURE
W
ASHER
T
roub
leshooting Guide
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
LOW WATER
TEMPERATURE
Improper fuel or water in fuel Drain fuel tank and replace with proper fuel.
Low fuel pressure Increase fuel pressure.
Weak fuel pump Check fuel pump temperature. Replace pump
if needed.
Fuel filter partially clogged Replace as needed.
Soot build up on coils Clean coils with soot remover.
Lime build up on coils Clean inside of coils usings coil cleaner.
Improper burner nozzle See Burner Specifications.
WATER
TEMPERATURE
TOO HOT Incoming water to machine warm or
hot Lower incoming water temperature.
Fuel pump pressure too high Lower fuel pressure.
Fuel pump defective Replace fuel pump.
Detergent line sucking air Tighten all clamps. Check detergent line for
holes.
Defective high limit switch (thermostat) Replace.
Incorrect fuel nozzle size See Burner Specifications.
Insufficient water supplied Check GPM to machine.
Restricted water flow Check nozzle for obstruction, proper size.