Specifications

D-1000B Heater Operations & Maintenance
TROUBLESHOOTING 7-2 DHS SYSTEMS LLC
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SYMPTOM / FAULT CAUSE
CORRECTIVE ACTION
 Check connection of H.T.
Ignition Cables to electrodes
dt f
 Check electrodes setting
 Check electrodes for cleanliness
 Ignition Control Assembly defective
 Replace Ignition Control Assembly
 Pressure Switch defective  Replace Pressure Switch
 Photocell defective  Clean or replace Photocell
 Check condition of Electric Motor-
Fuel Pump plastic coupling
 Check fuel line system
including fuel filter for possible
leaks
 Clean or replace fuel filter

Not enough or no fuel at all at
burner
 Clean or replace fuel nozzle
 Check electrical connection
 Motor starts, no ignition or cuts out
 Solenoid defective
 Replace solenoid
 Make sure air inlet and outlet are
free of debris
 Check setting of combustion air flap
 Not enough combustion air
 Clean burner flange
 Too much combustion air  Check setting of combustion air flap
 Motor starts, heater emits smoke
 Fuel contaminated
 Drain and flush fuel tank with clean
fuel