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b. Sail switch damper is not closing or is fluttering.
1) Lint screen is dirty.
2) Restriction in the exhaust.
3) No exhaust air flow ...
a) Failed impellor (fan and blower).
b) Fault in blower (impellor and fan) motor circuit (for Reversing Models ONLY).
2. Failed burner hi-limit.
3. Failed lint chamber sensor bracket basket (tumbler) hi-limit switch.
I.
No heat)...no voltage at heating unit (i.e., Gas Model - Hot Surface Ignition [HSI] module)
GAS MODELS ...
1. Fault in hot surface ignition system ...
a. Hot Surface Ignitor glows but no ignition and HSI module "LOCKS-OUT" ("red" L.E.D. [light emitting
diode] indicator flashes) ...
1) Flame probe assembly is out of adjustment or has failed.
2) Severe air turbulence.
3) Failed HSI module.
4) Failed gas valve.
b. Hot Surface Ignitor glows, but burner goes off right away ...
1) Flame probe assembly is out of adjustment or has failed.
2) Sail switch is fluttering ...
a) Lint screen is dirty.
b) Restriction in exhaust duct work.
c. Hot Surface Ignitor does not glow and HSI module "LOCKS-OUT" ("red" L.E.D. [light emitting
diode] indicator flashes)...
1) Fault in Hot Surface Ignitor wiring...break or loose connection.
2) Failed Hot Surface Ignitor.
3) Failed HSI module.