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T. Heating unit is not operating (no heat)...no voltage at HSI (Hot Surface Ignition) module...when
the dryer is first started and both indicator dot and the "HEAT" output L.E.D. (light emitting
diode) is on...
1. Fault in sail switch circuit ...
a. Sail Switch is out of adjustment or has failed.
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/blower).
b) Fault in blower (impellor/fan) motor circuit (for Reversing Models ONLY).
2. Tripped burner manual reset hi-limit.
3. Tripped lint chamber sensor bracket basket (tumbler) manual reset hi-limit switch.
U. Heating unit is not operating (no heat)...voltage is evident at HSI (Hot Surface Ignition)
module...
1. Fault in Hot Surface Ignition (HSI) system ...
a. 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. Ignitor glows, burner lights 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 the HSI module "LOCKS-OUT ("red" L.E.D. [light
emitting diode] indicator flashes) ...