Mi-T-M HHB Series, Operator'S Manual

Page: 24 / 76

24 Operator's Manual
Burner motor will not run. Switch is defective position. Check switch position or replace.
No voltage. Contact Customer Service.
Motor overload. Reset when cool.
Fuel pump seized. Allow motor to cool. Repair or
replace.*
Burner runs erratically. Water in the fuel oil. Drain fuel filter/water separator.
Drain fuel tank, and replace with
clean fuel.
Dirty fuel filter/water separator. Replace element.
Fuel pickup screen is obstructed. Contact Customer Service.
Dirty fuel nozzle. Replace.*
Improper air adjustment setting. Adjust as explained on page 20.
Fuel pump malfunctioning. Replace.*
Burner runs, but will not heat. Low fuel pump pressure. Check fuel pump pressure, adjust or
replace if needed. (Pressure should
be checked by an authorized
service technician.)
Dirty fuel nozzle. Replace.*
Improper air adjustment setting. Adjust as explained on page 20.
Burner discharges white smoke. Low on fuel. Refuel. If white smoke persists,
contact Customer Service.
Low fuel pressure. Check fuel pump pressure, adjust or
replace if needed. (Pressure should
be checked by an authorized
service technician.)
Fuel pickup screen is obstructed. Contact Customer Service.
Dirty fuel nozzle. Replace.*
Improper air adjustment setting. Adjust as explained on page 20.
Cold combustion chamber start-up. Run burner for several minutes.
Excessive air supply. Adjust as explained on page 20.
Burner discharges black smoke. Insufficient air supply. Adjust as explained on page 20.
Fuel nozzle orifice is too large. Replace with correct nozzle.
Fuel pressure is too high. Contact Customer Service.
Combustion chamber loaded with Contact Customer Service.
unburned fuel.
*See separate Parts List for detailed views or explanations.
TROUBLESHOOTING
SYMPTOM PROBABLE CAUSE REMEDY