Owner's manual

Problem

LED Flashing

One Time

Flash pattern begins

immediately, fan motor

does not run. Heater

does not light.

Is flapper or

air-proving switch arm

binding on housing? Is

there an obstruction in

heater outlet?

Is air-

proving switch

shorted? (Perform

continuity check on air-

proving switch.)

Yes

Repair and/or remove obstructions.

Yes

Replace air-proving switch.

Long Flash

Two seconds

on, two

seconds off

repetitively

for 15 minutes.

Heater has attempted two ignition trials. Heater is in a 15 minute wait period before attempting its third

(final) trial for ignition. If ignition is not achieved after the third trial, the heater will lock out and the

ignition control module will present the three time flash pattern. Either recycle the heater or wait for

heater to attempt third ignition trial.