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.
Limit control 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 properly sized and is in good condition (see Oil Pipe Sizing Information on
page 37 ).
Oil pump pressure.
Oil nozzle is correctly sized for application.
Check cad cell location and photo eye cleanliness.
GENERAL TROUBLESHOOTING GUIDE
Improper fuel or water in fuel
Drain fuel tank and fill with proper fuel.
Close limit or thermostat switch, and check limit switch for
proper cycling operation.
Improper electrode spacing, gap to
small
Clean and position electrode tips according to Figure 14 or
Figure 15 on pages 26-27.
Misadjusted burner air bands
Re-adjust air bands for clean burn.
Little or no fuel pressure from fuel pump
Increase fuel pressure to manufacturer's specifications. See
Figure 25 on page 36 for pump features. Check that plastic
coupler (see Figure 1 on page 13, item 10) is not slipping on
pump shaft, replace as needed and/or replace pump.
Before troubleshooting, familiarize yourself with the startup procedures and
sequence of operation. Check the burner, ignitor or transformer, oil primary
control (if equipped), and cad cell (if equipped) for proper operation and condition.
The Honeywell R7284 oil primary control’s reset button is the “i” button, the R7184, R8184 and
Wayne control is the big red button. Pressing the reset button and restarting the burner more
than once with the burner not lighting could cause oil buildup in the firing chamber. This will
cause smoking and possible detonation that could damage the equipment if the burner does light
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