Owner's manual

Three Times Lack of ignition. The module has gone into safety lockout.
Is
LP tank
full and properly
sized and are all gas
supply valves to
heater open?
Fill tank or resize if
necessary. Open all
gas supply valves
Yes
No
Is proper gas
pressure supplied
to heater?
Yes
Are 24 volts
supplied to the
gas control
valve?
Have
the burner
orifice, burner
casting and manifold
been checked for
blockage?
Yes
Is proper
burner manifold
pressure read at
outlet of gas
valve?
Does igniter
spark?
Is flame
sensor clean?
Is igniter
properly
connected?
Is Igniter
Properly Gapped?
Yes
Yes
Are high limit
switch contacts
closed?
Yes
Yes
Yes
If contacts are “Open”,
reset the switch.
Determine cause of high
limit tripping. See
Footnote 4 at end of
Troubleshooting section.
(A) If low or high pressure
is read, adjust outlet pressure as necessary.
(B) If gas pressure is not
read, replace the gas control valve.
Defective igniter assembly. Replace igniter.
Clean flame sensor
with emery cloth or
steel wool.
Connect igniter
to igniter high
voltage cable.
Check gap between igniter electrode and
burner casting. Gap should be 3/16 In.
Repair or replace as necessary or replace
control module.
Provide proper
pressure to heater
and check with a
gauge.
Check wiring between
module and
component. Repair
or replace as
necessary, or replace
ignition control
module.
No
Remove orifice and
burner casting. Blow
out with compressed
air or clean with a
soft brush.
No
No
No
No
No
No
No
No
Is proper
voltage supplied
to flame
sensor?
Yes
Check wiring between
module and component.
Repair or replace as
necessary.
No
Is
flame sensor
insulator
cracked?
Yes
Replace sensor.
No
Is
flame sensor
properly
positioned?
Yes
Yes
Position flame
sensor so 1/2 -
3/4 in. of tip is in
burner flame.
No
Is heater
properly
grounded?
Contact electrician.
System must be
grounded for
proper operation.
No
23
Yes