Service manual

18 505894

Section 3 Troubleshooting

To reduce the risk of electric shock, fire, explosion, serious injury or death:

• Disconnect electric power to the dryer(s) before servicing.

• Close gas shut-off valve to gas dryer(s) before servicing.

• Never start the dryer(s) with any guards/panels removed.

• Whenever ground wires are removed during servicing, these ground wires must be

reconnected to ensure that the dryer is properly grounded.

W001R1

WARNING

16. IGNITION CONTROL FLASHES

Refer to Figure 1.

NOTE: This control will lock-out the igniter after four failed attempts at ignition. The control can be reset by

opening loading door, waiting 1 minute, then closing loading door. If door is closed before waiting 1 minute, the

control will re-enter lockout. The red light will flash a “Flash Code” when the control is in the lock-out mode. The

light will flash on for 1/4 second then off for 1/4 second for each number. The pause between flash codes is 2

seconds. These flashes are caused by the control’s diagnostic test and can be interpreted by reading the following:

FLASH CODE POSSIBLE CAUSE TO CORRECT

Constant Light Internal failure. • Reset dryer. (Refer to NOTE above.) If

condition persists, then replace control.

One Flash Air in gas line. • Purge air from gas line.

Sensor coated with Aluminum Oxide. • Wipe sensor clean or replace sensor if

necessary.

Incorrect gas pressure. • Check for correct gas pressure. If gas pressure

is incorrect, then contact local gas company.

Gas shut-off valve closed. • Open gas shut-off valve.

Four Flashes Internal failure. • Reset dryer. If condition persists, then replace

control.

Loose or disconnected wiring. • Check all wiring leading to, or coming from,

the control module for secure connections.

Open Igniter/igniter sensing circuit/

voltage measurement circuit.

• Check igniter and all circuits, replace if

necessary.

Five Flashes Loose or disconnected wiring. • Check all wiring leading to, or coming from,

the control module for secure connections.

Inoperative gas valve. • Check gas valve and replace if necessary.

Inoperative sensor. • Replace sensor/igniter.

Six Flashes Loose or disconnected wiring. • Check all wiring leading to, or coming from,

the control module for secure connections.

Incorrect wiring. • Check wiring diagram and make sure dryer is

wired correctly.

Incorrect polarity. • Contact a professional electrician to check the

polarity, and correct any problems.