American Dryer Corp. Super AD-30 - Manual (Page 55)

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F. Heating unit not operating (ALL temperature selections)...
GAS MODELS
1. Fault in sail switch circuit ...
a. Sail switch out of adjustment and/or failed.
b. Sail switch not closing or fluttering ...
1) Check blower (impellor/fan) motor and rotation direction.
2) Restriction in location exhaust system.
2. Failed burner hi-limit circuit.
3. Failed lint compartment automatic (225º) safety thermostat circuit.
4. Failed heat selector switch.
ELECTRIC MODELS
1. Fault in sail switch circuit ...
a. Sail switch out of adjustment and/or failed.
b. Sail switch not closing or fluttering ...
1) Check blower (impellor/fan) motor and rotation direction.
2) Restriction in location exhaust system.
2. Failed oven hi-limit circuit.
3. Failed lint compartment automatic (225 º) safety thermostat circuit.
4. Failed oven contactor/relay.
5. Failed heat selector switch.
STEAM MODELS
1. Steam damper binding and/or stuck.
2. Failed lint compartment automatic (225º) safety thermostat circuit.
3. Failed heat selector switch.
G. Heat unit not operating for only one (1) temperature selection...
1. Failed thermostat corresponding to selection made.