Mi-T-M HMT-4004-0MGH Manual Del Operador página 27

SYMPTOM
Blower runs, but burner
will not ignite.
Blower runs, but
burner will not ignite.
Blower runs, burner
ignites but will not heat
HMT-4004-0MGH Operator's Manual
TROUBLESHOOTING
PROBABLE CAUSE
Trigger gun is closed.
Out of fuel.
Pressure switch override.
No voltage.
Poor or improper fuel supply.
Fuel pump sucking air.
Dirty or clogged fuel filter or fuel water
separator.
Low fuel pump pressure.
Fuel pump inoperative.
Flexible coupler broken.
Fuel solenoid valve failure.
Dirty or clogged fuel nozzle.
Improper burner air adjustment.
Faulty ignition module.
Ignition electrodes damaged or worn.
Poor or improper fuel supply.
Dirty or clogged fuel filter or fuel water
separator.
Low fuel pump pressure.
Dirty or clogged fuel nozzle.
Improper burner air adjustment.
Scale build up in heat exchanger coil.
REMEDY
Open gun for pressure.
Refuel.
Pressure should be over 375 PSI to allow burner
to come on.
Consult Service Department.
Check fuel to ensure it is correct. Drain tank and
filter if necessary and refill with proper fuel.
Tighten all fuel intake connections. Eliminate
leaks in intake line.
Drain or replace as necessary.
Check fuel pump pressure, adjust or replace as
necessary.
Check pressure, replace if necessary.
Replace
Replace.
Replace fuel nozzle.
Adjust as shown on pg. 23
Repair or replace. Consult your Customer Ser-
vice.
Adjust or replace electrodes. Consult your Cus-
tomer Service.
Check fuel to ensure it is correct. Drain tank and
filter if necessary and refill with proper fuel.
Drain or replace as necessary.
Check fuel pump pressure, adjust or replace if
needed.
Replace fuel nozzle.
Adjust.
Consult the Service Department.
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