American Dryer Corp. AD-60 - Manual (Page 52)

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M. Microprocessor controller (computer) locks up and light emitting diode (L.E.D.) display reads
erroneous message(s) or only partial segments...
1. Transient power voltage (spikes), disconnect power to dryer, wait 1 minute, and reestablish power to dryer.
If problem is still evident...
a. Failed microprocessor controller (computer).
b. Failed keyboard (touch pad) label assembly.
N. Dryer stops during a cycle and L.E.D. display returns to “FILL”...
1. Fault in microprocessor heat sensor circuit...
a. Loose connection in wires between temperature sensor and microprocessor controller (computer).
2. Loose connection somewhere in main power circuit to microprocessor controller (computer).
O. No heat (for gas models only), ignitor sparks, burner goes on and off right away...
1. Direct Spark Ignition (DSI) ignitor/flame-probe is out of adjustment, reposition closer to the flame area.
2. Sail switch is fluttering...
a. Lint screen is dirty.
b. Restriction in exhaust ductwork.
3. Insufficient make-up air.
4. Failed ignitor/flame-probe assembly.
5. Failed DSI module.
6. Failed gas valve.
P. Heating unit is not operating (no heat) and heat indicator dot is on...
GAS MODELS ONLY
1. Fault in sail switch circuit...
a. Sail switch is out of adjustment and/or failed.
b. Sail switch damper is not closing or is fluttering...
1) Lint screen is dirty.
2) Restriction in exhaust ductwork.
2. Tripped burner manual reset hi-limit thermostat.