Troubleshooting
51
PRESSURE WASHER SURGES OR CYCLES WHILE IN BYPASS
Causes
Solutions
Leak between unloader and gun.
Check all connections between unloader and gun for leaks.
Tighten loose components and replace damaged components.
Gun leaking internally
Replace spray gun.
SMOKE FROM HEAT EXCHANGER
Causes
Solutions
Engine not at full throttle
Throttle engine all the way up.
Damper not adjusted properly
Adjust the damper until the burner burns cleanly. See
Burner
Adjustment.
Poor quality fuel
Use kerosene for the cleanest burn.
Belt broken
Replace belt.
WATER NOT HEATING SUFFICIENTLY
Causes
Solutions
Scale build-up in coil
See
Coil Descaling
under
Maintenance Instructions.
Coil is full of soot
See
Coil Desooting
under
Maintenance Instructions.
PRESSURE WASHER RUNS BUT NO PRESSURE
Causes
Solutions
Partially clogged or damaged nozzle
Clean or replace nozzle.
Low water flow
Make sure the water supply is more than
4.8 gpm.
Clogged inlet filter
Clean or replace inlet filter
Easy start valve is stuck open
Clean or replace
Damage or obstructed Pump valves
Clean or replace
Worn pump packings
Replace pump packings
Unloader not working properly
Repair or replace
Air trapped in supply line between water
tank and pump
Ensure water tank is all the way full before starting engine. If
needed, loosen hose clamp on the pump inlet to allow air to
escape and water to flood the pump inlet. Retighten clamp once
inlet is flooded.
