American Dryer Corp. Gas/Electric/Steam AD-75HS User Manual
Page 63
59
STEAM MODELS ...
1. Fault in lint chamber sensor bracket basket (tumbler) hi-limit.
U. Heating unit is not operating (no heat)...no voltage at heating unit (i.e., Gas Model - HSI module,
Electric Model - electric oven contactor, or Steam Model - steam damper system pneumatic
solenoid) when dryer is first started and both the heat indicator dot and the "HEAT" output
L.E.D. (light emitting diode) is not on...
1. Failed microprocessor controller (computer).
V. Heating unit is not operating (no heat)...no voltage at heating unit (i.e., Gas Model - HSI module,
Electric Model - electric oven contactor, or Steam Model - steam damper system 3-way micro
valve)...
GAS MODELS ...
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 HSI module "LOCKS-OUT" ("red" L.E.D. [light emitting
diode] indicator flashes) ...
1) Fault in Ignitor wiring...break or loose connection.
2) Failed Ignitor Assembly.
3) Failed HSI module.