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TROUBLE SHOOTING
2.
Drive motor (only) not operating (does not start).
1)
Failed drive motor contractor (relay).
2)
Failed reversing timer.
3)
Failed drive motor.
3.
Blower (impeller / fan) motor (only) not operating (does not start).
1)
Tripped or failed overload.
2)
Failed impeller (blower / fan) motor contractor (relay).
3)
Failed reversing timer.
4)
Failed blower (impeller / fan) motor.
4.
Both drive motor and blower (impeller / fan) motor not operating (do not start) and
indicator light is on.
1)
Fault in L1 termination at reversing timer.
5.
Drive motor (reversing) operates in one direction only...stops and restarts in same
direction.
1)
Failed reversing contractor (relay).
2)
Failed reversing timer.
6.
Heating unit is not operating (no heat)...no voltage at heating unit (i.e., Gas Model DSI
module or Steam Model damper system pneumatic solenoid).
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.
-
Check blower (impeller / fan) motor and rotation direction.
-
Restriction in exhaust.
-
Lint drawer / screen are dirty.
2)
Failed burner hi – limit switch.
3)
Failed lint compartment automatic (200°) safety thermostat circuit.
4)
Failed Direct Spark Ignition (DSI) module (burner control).
5)
Failed Direct Spark Ignition (DSI) igniter / flame – probe assembly.
6)
Failed heat selector switch.
Electric Models:
1)
Fault in sail switch circuit.
a.
Sail switch is out of adjustment or has failed.
b.
Sail switch is not closing or is fluttering.
-
Check blower (impeller / fan) motor and rotation direction.
-
Restriction in exhaust.
2)
Failed oven hi – limit circuit.
7-6
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