7
TROUBLESHOOTING
Preliminary Steps
Check the following common causes of issues:
Wiring connections, fuses, power supply to the burner blower motor, controls, and ignition device.
Flow switch is closed.
Thermostat (controller) is calling for heat.
Contacts between ignition device and electrodes.
Electrode gap is properly set at nozzle.
Oil piping to burner and tank is in good condition
Oil pump pressure.
Oil nozzle is correctly sized for application.
Check cad cell location and photo eye cleanliness.
GENERAL TROUBLESHOOTING GUIDE
Wayne Combustion Systems produces EHASR-DC and EH-DC burners in different variations for multiple OEM
manufacturers. When troubleshooting a burner on a piece of equipment, consult your equipment manual for
specific troubleshooting information. If the equipment manual is not available, use this general troubleshooting
guide.
PROBLEM
POSSIBLE CAUSE
SOLUTION
BURNER WILL NOT
LIGHT
Little or no fuel
Fill tank with fuel.
Improper fuel or water in fuel
Drain fuel tank and fill with proper fuel.
Limit switch open
Close flow switch or thermostat switch, and check flow switch
for proper cycling operation.
Improper electrode spacing, gap too
small or too large
Clean and position electrode tips according to Figure 15 on
page 27 or Figure 16 on page 28.
Plugged fuel filter
Replace as needed.
Misadjusted burner air bands
Re-adjust air bands for clean burn.
Before troubleshooting, familiarize yourself with the startup procedures and sequence of
operation. Check the burner, ignitor, oil primary control (if equipped), and cad cell (if
equipped) for proper operation and condition.
The 12Vdc oil primary control is reset by removing power from the white command wire for 2
seconds.
Repeated re-start attempts of a non-lighting burner could lead to the buildup of un-
burned fuel in the combustion chamber. This may cause smoking and possible detonation
that will damage the equipment if the burner does light.
