ADC AD-78 User Manual
Page 56
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T. Heating unit is not operating (no heat)...no voltage at heating unit (i.e.,
Gas Model
- Hot
Surface Ignition [HSl] 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.
is on...
GAS MODELS...
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. Failed burner hi-limit.
3. Failed lint chamber sensor bracket basket (tumbler) hi-limit switch.
ELECTRIC MODELS...
(
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. Failed burner hi-limit.
3. Failed lint chamber sensor bracket basket (tumbler) hi-limit switch.
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