Sequence Of Operation: Burners With Wayne 12Vdc Oil Primary Control 101382-002 - Wayne EHASR-DC Manual

SEQUENCE OF OPERATION: BURNERS WITH WAYNE 12Vdc OIL PRIMARY
BURNER OPERATION
On every call for heat the oil primary control performs an internal safety check; verifying the cad cell is not registering a
false flame signal. Completing a successful check, the burner's blower motor is energized; after 1 second the ignition
device and fuel solenoid are energized which begins the 15 second trial for ignition. Once flame is established the oil
primary control will monitor the presence of flame by using the cad cell's resistance signal. The igniter is de-energized 15
seconds after a flame signal has been proven. Burner operation will continue until voltage is removed from the white
command wire on the oil primary control. When voltage is removed from the white command wire the burner solenoid is
de-energized. If the presence of flame is not detected during the trial for ignition, the oil primary control will go into a "lock-
out" condition. If this occurs, proceed to the section titled SAFETY LOCK-OUT TIME.
SAFETY LOCK-OUT TIME
Ignition failure occurs during the first "trial for ignition" period
The cad cell monitors the combustion chamber for a presence of flame during the burner's trial for ignition period. If the
presence of a flame is not detected the oil primary control will go into a lockout condition. When the oil primary control
goes into lockout it will de-energize the burner, and the control's red LED light on the bottom of the control will flash for 2
seconds followed by five short 0.5 second flashes. The red LED will repeat this sequence until the control is reset.
Remove power from the white command wire for 2 seconds to reset the control. If normal ignition does not occur see
GENERAL TROUBLESHOOTING GUIDE on page 7.
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.
Intermittent flame failure occurs during a "call for heat"
If the oil primary control stops sensing the presence of a flame after the signal has been proven and the trial for ignition
timer has expired, the oil primary control will re-energize the ignition device. The oil primary control then enters another
"trial for ignition" period. If flame signal is proven during the trial for ignition, and lost after the trial for ignition timer expires
the control will go into another "trial for ignition" period. If no flame is proven during the trial for ignition period the control
will go into a lockout condition. If normal ignition does not occur see GENERAL TROUBLESHOOTING GUIDE on page 7.
CONTROL 101382-002
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