Mi-T-M HDC Serie Manual Del Operador página 22

SYMPTOM
Blower motor will not run.
(Burner will not ignite without
blower running)
Blower runs, but burner will
not ignite.
Blower runs, burner ignites
but will not heat.
22
TROUBLESHOOTING
PROBABLE CAUSE
Burner/Blower motor malfunction. Repair or replace.
Burner switch is not turned on.
Thermostat knob is OFF.
Trigger gun is closed.
Out of fuel.
Detergent valve is open, but
detergent hose is not complete-
ly submerged in solution. (This
causes safety devices to shut
down burner.)
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.
Thermostat knob is OFF.
Detergent valve is open, but
detergent hose is not complete-
ly submerged in solution. (This
causes safety devices
to shut down burner.)
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
Check switch position.
Check thermostat knob position.
Open gun for pressure.
Refuel.
Close valve, or completely submerge clear
vinyl hose into detergent solution.
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. 22.
Repair or replace. Consult your Customer
Service.
Adjust or replace electrodes. Consult your
Customer Service.
Check thermostat knob position.
Close valve, or completely clear vinyl hose
into detergent solution.
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.
HDC-SERIES Operator's Manual