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TROUBLESHOOTING
SYMPTOMS
CAUSES
REMEDIES
The water pump will not start
The motor thermic protection is open
Check the mains voltage (+/- 5%
tolerance). Check the phases
in the plug are connected well.
The water pump will not enter
The no-return valve does not seal
Replace the valve or the gasket
in bypass
and check the pressure valve
body wear.
Leakage from the water system
Eliminate the leaks
of the gun
The water pump does not reach
Nozzle worn
Replace the nozzle
maximum pressure
Pressure ball or adjustment housing
Replace the faulty part
worn or spring broken
Pressure valve gaskets worn
Replace the valve gaskets
Pistons seal gasket worn
Replace the gaskets
Nozzle holding head in position
Turn the head on high pressure
low pressure
Strong vibrations on the water pump
Water supply insufficient
Check the water supply flow and
the relative pressure (2÷10)
Check the water filter and clean
it if necessary
Prime the pump without the lance
Alien matter under a check valve
Check the valves, clean and reassemble
The burner will not start
Diesel filter blocked
Clean the filter
Diesel nozzle blocked
Clean the filter
Worn or broken electrodes
Replace the electrodes
The pressure switch remains open
Replace the pressure switch
Safety thermostat is open
Replace the safety thermostat
Anormal noise of Diesel pump
Low diesel
Fill diesel tank or work on cold water
No detergent suction
High viscosity of the employed
Further dilute the detergent
detergent
Detergent filter blocked
Clean the filter
