User Manual

Omega II
®
Installation, Operation & Maintenance
Combustion Research Corporation Page 35
Does the burner ignite?
Does the burner stay on?
N
O
Is the flame sensor wire
loose or sensor porcelain
damaged?
Replace or repair
damaged component.
YES
Is the ground wire from
the termi na l o n the
ignition control grounded
to the burn er bo dy ?
N
O
Replace ground wire.
NO
Y
E
S
Is the flame si gnal
steady and 0.7 mi cro
amps or greater?
N
O
Is the inlet gas pressure
during ignition correct?
NG - 7.0" / LP - 11.0"
Check gas lines and
manual valves. Is inlet
gas piping sized
correctly?
NO
Is there 24 volts on valve
terminals during igni tion?
Y
E
S
Is there 24 volts at the
termi n a ls on the i gn i ti on
control?
NO
Y
E
S
Is there gas pressure
at the manifold
pressure tap?
NG - 3.5",
LP - 10.0"
Check gas orifice for
blockage & proper si ze.
YES
Replace gas valve.
NO
Adjust supply gas pressure
to proper levels. (see name
plate)
YES
Repair or replace gas
piping to correct size.
NO
YES
Does the burner shut off
when the temperature is
sati sfied?
YES
N
O
Replace thermostat.
END OF TROUBLE
SHOOTING
YES
Check wires and replace
as needed.
YES
Replace ignition control.
NO
Is the "ON / OFF" knob on
the valve in the open or
"ON" position
YES
Replace igni tion control
if flame is not sensed.
YES
Clean spark and flame
sensor assembly. Replace
if necessary.
NO
Is there spark at the
i g n i ter a f ter a 30
second pre purge?
N
O
Remove power from
burner and check igniter
and ignition cable. Are
they damaged?
Replace igniter or
ignition cable as needed.
YES
Is the i gn i ter spa rk g a p
set at 1/8"?
N
O
Carefully reset gap to
1/8"
YES
Y
E
S
Replace igni tion control.
1
YES