Troubleshooting - Mi-T-M Corporation HHM Serie Manual Del Operador

SYMPTOM
Motor will not run.
No discharge at nozzle when
trigger mechanism is squeezed.
Low or fluctuating pressure.
Burner will not ignite
Operator's Manual

TROUBLESHOOTING

PROBABLE CAUSE
GFCI tripped.
Inadequate water supply.
Kink in water inlet hose.
Kink in high pressure discharge hose.
Scale build up in heat exchanger coil.
Switch is defective.
Adjustable Thermostat is defective
or in the "Off" position.
No voltage.
Out of fuel.
Fuel tank inlet tube screen obstructed. Remove, clean or replace tube.*
Trigger gun is closed.
Pressure switch override.
Fuel pickup screen is obstructed.
Temperature above thermostat
setting.
High limit switch override.
Flexible coupler broken.
Dirty or clogged fuel filter.
Fuel pump sucking air.
Fuel pump inoperative.
Dirty or clogged fuel nozzle.
Improper burner air adjustment.
Ignition transformer failure.
Ignition electrodes not set properly,
damaged or worn.
Fuel solenoid valve failure.
*See separate Parts List for detailed views or explanations.
REMEDY
Reset.
Ensure hose is 3/4" diameter and
incoming water supply is turned on.
Remove kink.
Replace kinked high pressure hose.
Delime coil.
Check switch position or replace.
Check switch position or replace.
Contact Customer Service.
Refuel.
Open trigger gun for pressure.
Pressure should be over 250 PSI/
5 Bar to allow burner to come on.
(Pressure should be checked by an
authorized service technician.)
Contact Customer Service.
Unit will automatically reignite when
cool.
Unit will automatically reignite when
cool.
Replace.*
Drain or replace as necessary.*
Tighten all fuel intake connections.
Eliminate leaks in intake line.
Check pressure, replace if needed.
(Pressure should be checked by an
authorized service technician.)
Replace.*
Adjust.
Replace.*
Contact Customer Service.
Replace.*
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