Sequence of Operation
WARNING Fire Hazard
Reset and Service by Qualified Technician only.
Burner States
1.Standby: The burner is idle, waiting for a call for heat.
2.
3.Trial For Ignition: The oil solenoid valve is energized. A flame should be established within the factory set trial for ignition time (“lockout time”).
4.Lockout: The control has shut down for one of the following safety reasons:
a.The trial for ignition (lockout) time expired without flame being established.
b.The cad cell detected flame at the end of the Valve On Delay state.
c.The
d.Failed welded relay check.
If the control detects a welded motor contact, the motor only will cycle 5
seconds on, 5 seconds off, 3 times before locking out.
To reset the control from lockout interrupt power for at least 2 seconds.
5.Ignition Carryover: Once flame is established, the igniter remains on for 10 additional seconds to ensure flame stability.
6.Run: The flame is sustained until the call for heat is satisfied. The control then switches to
if applicable, or it shuts down and returns to Standby.
7.Relight: If the flame is lost while the burner is firing, the control immediately repeats the ignition sequence. The control will continue to Relight each time the flame is lost, until it reaches a
go into Lockout instead of Relight. This feature prevents excessive accumulation of oil in the equipment’s combustion chamber.
8.
1 |
Standby
2
delay
8
delay
3
Trial for ignition
5
Ignition
carryover
6 |
Run
4 |
Lockout
7 |
Relight
6
