ADC ML-175, ML-190 service manual Ignition Controls

To Replace Keypad Label Assembly

Discontinue electrical power to the dryer. Unplug keypad ribbon from rear of computer.

Slowly peel off and remove keypad label assembly from control panel.

Peel paper backing off new keypad label assembly.

Holding the new keypad label assembly close to the panel, insert the keypad ribbon through the rectangular slot in the control panel. Align label assembly into position by matching the red viewing window on the label to the rectangular cutout in the panel and gently press into place.

Connect keypad ribbon to the computer. Reestablish electrical power to the dryer.

To Replace Microprocessor Temperature Sensor Probe

Discontinue electrical power to the dryer.

Remove lint drawer. Remove six screws securing lint door and remove lint door.

Remove microprocessor sensor bracket assembly from dryer.

Disconnect sensor bracket harness connector.

Remove the four Hex head screws securing bracket assembly to dryer and remove bracket from dryer.

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.

Disconnect the two “orange” wires from the high heat (225° F [107° C]) thermostat, and remove modular bracket connector, wires, and probe from bracket assembly.

Install new sensor probe assembly (ADC P/N 880251) by reversing procedure.

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.

Ignition Controls

To Remove HSI Ignitor

Discontinue electrical power to the dryer.

Disconnect the two “white” ignitor wires going to the HSI module.

Disassemble HSI ignitor from burner by removing the self- tapping screw.

Reverse procedure for installing new ignitor.

To Remove HSI Flame-Probe Assembly

Discontinue electrical power to the dryer.

Disconnect the “red” wire from the flame sensor probe, which goes to S2 on the HSI module.

Disassemble flame sensor probe from burner by removing the self-tapping screw.

Reverse procedure for installation of new flame sensor probe.

To Replace Spark Ignitor and Flame-Probe

Discontinue power to the dryer.

Disconnect high voltage connector and flame-probe connection from ignitor.

Disassemble ignitor from burner by removing the two self-tapping screws.

Reverse procedure for installing the new ignitor probe.

NOTE: Before reestablishing power to the dryer, visually

check the following: (refer to the illustration on the next page).

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