Wayne EH - Page 8

8
PROBLEM
POSSIBLE CAUSE
SOLUTION
BURNER WILL NOT
LIGHT
(continued)
Air bubble sucked and trapped in pump
Bleed pump (see page 31 for instructions) and check all fuel
lines for air leaks, replace lines as needed. See Figure 25 on
page 36 for pump features.
Burner motor thermal protector actuated
If tripped, check voltage, connections, and extensions for
cause. Check fuel pump shaft rotation for binding causing
motor to overheat.
Flex-coupling slipping on fuel pump
shaft or burner motor shaft
Replace as needed. See Figure 1 on page 13, Item 10.
Fuel not reaching combustion chamber
Check fuel system for proper flow going through the burner.
Clogged burner nozzle
Replace. See page 22 for instructions.
Low voltage at burner wire leads
Check for proper 120/230 Vac going to the burner
Fuel solenoid malfunction
Replace as needed. See Figure 1 on page 13 for
replacement part.
Faulty burner ignition device
Test ignition device for proper arc between contacts. Replace
as needed. See Figure 1 on page 13 for replacement part.
Disconnected or short in electrical wiring
All wire contacts should be clean and tight. No breaks in wire
insulation, replace as needed. See page 21 for wire size
recommendations.
Oil primary control sees light during
safety check and remains in standby
mode (Applicable only if burner comes
with oil primary control).
Press and hold the reset button for 2 seconds on a Honeywell
control, (push and hold for 3 seconds if it is an older style
Wayne control), observe burner sequence of operations. If
burner remains on standby see Burner does not light,
Honeywell controls remains on standby, on page 10.
Oil gun depth spaced too far ahead
causing electrodes too short to ground
through air cone.
Identify burner model and position oil gun depth according to
Figure 16 and Figure 17. See page 27 for instructions.
Heavy sooting on burner electrodes,
and air cone causing a weak arc
between the electrodes.
Clean as required. Check ceramic for any chips and cracks
that could affect arc between the electrodes, replace as
required. See Table 2 on page 15 for replacement parts.
BURNER WILL LIGHT,
BUT NOT STAY LIT
DURING CALL FOR HEAT
Oil primary control goes into nuisance
lockout (Applicable only if burner comes
with oil primary control).
Press and hold the reset button for 2 seconds on a Honeywell
control, (push and hold for 3 seconds if it is an older style
Wayne control), observe burner sequence of operations. If
burner locks out again see Burner Will Light, But Will Not
Stay Lit During “Call For Heat”, on page 11.
BURNER SMOKES
Improper fuel or water in fuel
Drain tank and replace contaminated fuel.
Improper air adjustment
Re-adjust air bands on burner assembly for clean burn.
Low fuel pressure
Increase fuel pressure to manufacturer's specifications. See
Figure 25 on page 36 for pump features.
Air leaks in fuel lines
Check fuel lines for leaks or air bubbles. Tighten or replace
as needed.
Plugged or dirty burner nozzle
Replace burner nozzle. See page 22 for instructions.
Improper nozzle size installed, nozzle
size too big
Contact appliance manufacturer for proper nozzle size, and
replace. See page 22 for instructions.