ADC AD-78 - Manual (Page 57)

1. Fault in lint cham ber sensor bracket basket (tum bler) hi-lim it.
U. Heating unit is not operating (no heat)...no voltage at heating unit (i.e., Gas Model - Hot
Surface Ignition [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)»
not on...
1. Failed m icroprocessor controller (com puter).
V. Heating unit |s not operating (no heat)...no voltage at heating unit (i.e.. Gas Model - Hot
Surface Ignition [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 system ...
a. H ot surface ignitor glows but no ignition and H SI m odule "L,O CK S-O UT" ("red" L.E.D. indicator
flashes)...
1) Flam e probe assem bly is out of adjustm ent or has failed.
2) Severe air turbulence.
3) Failed H SI m odule.
4) Failed gas valve.
b. H ot surface ignitor glows, but burner goes off right away ...
1) Flam e probe assem bly is out of adjustm ent or has failed.
2) Sail switch is fluttering ...
a) Lint screen is dirty.
b) Restriction in exhaust duct work.
c. H ot surface ignitor does not glow and H SI m odule "LO CK S-O UT" ("red" L.E.D. indicator flashes)...
1) Fault in hot surface ignitor wiring...break or loose connection.
2) Failed hot surface ignitor.
3) Failed H SI m odule.
STEAM M ODELS...
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