American Dryer Corp. Phase 6 Microprocessor Controls ML-190HS - Manual (Page 22)

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To Replace Microprocessor Temperature Sensor Probe
1. Discontinue electrical power to the dryer.
2. Remove lint drawer. Remove six (6) screws securing lint
door and remove lint door.
3. Remove microprocessor sensor bracket assembly from
dryer.
a. Disconnect sensor bracket harness connector.
b. Loosen the two (2) Phillips head screws securing bracket
assembly to dryer and remove bracket from dryer.
NOTE: DO NOT remove screws.
4. Disassemble sensor probe from bracket assembly by removing the top push-on fastener securing the probe
from bracket. Use a small screwdriver to slowly pry the fastener off.
5. Disconnect the two (2) “orange” wires from the high heat (225º F) thermostat, and remove modular bracket
connector, wires, and probe from bracket assembly.
6. Install new sensor probe assembly (ADC P/N 880251) by reversing procedure.
7. Reestablish electrical power to the dryer.
NOTE: If, when power is reestablished, the computer display reads “Temp Sensor Check Temp
Sensor Fuse,” check for a loose connection in the wiring.
B. IGNITION CONTROLS
To Remove HSI (Hot Surface Ignition) Ignitor
1. Discontinue electrical power to the dryer.
2. Disconnect the two (2) “white” ignitor wires going to the HSI module.
3. Disassemble HSI ignitor from burner by removing the self tapping screw.
4. Reverse procedure for installing new ignitor.
C. TO REMOVE FLAME PROBE ASSEMBLY
1. Discontinue electrical power to the dryer.
2. Disconnect the “red” wire from the flame sensor probe which goes to S2 on the HSI module.
3. Disassemble flame sensor probe from burner by removing the self tapping screw.