Service manual

12 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

6. DRYER HEATING ASSEMBLY DOES NOT HEAT OR BURNER DOES NOT IGNITE

POSSIBLE CAUSE TO CORRECT

Improper or inadequate exhaust system. • Refer to Installation Instructions (supplied with dryer)

for exhaust requirements.

Use of plastic or thin foil exhaust duct. • Replace with rigid or semi-rigid metal exhaust duct.

Blown house fuse or tripped circuit breaker. • Check fuses or circuit breakers.

Fabric selector switch set at NO HEAT/AIR

FLUFF, or inoperative.

• Reset or test switch and replace if inoperative.

Timer improperly set (set in a cool-down period, or

a no heat cycle).

• Reset timer. Try another cycle.

Inoperative limit thermostat. • Test thermostat and replace if inoperative.

Inoperative drive motor switch. • Test switch and replace if inoperative.

Electric Models: Inoperative heater assembly. • Test heater assembly and replace if cold Ohms do not read

between 9 and 10.5 Ohms.

Electric Models: Inoperative thermal fuse. • Test thermal fuse and replace if inoperative.

Gas Models: Insufficient gas supply. • Check gas shut-off valve in dryer and main gas line valve.

• Open partially closed gas shut-off valve, or correct low

gas pressure.

Gas Models: Inoperative gas valve coils. • Test coils and replace if inoperative. Refer to

Paragraph 70.

Gas Models: Inoperative sensor. • Test sensor and replace if inoperative. Refer to

Paragraph 71.

Gas Models: Inoperative igniter. • Test igniter and replace if inoperative. Refer to

Paragraph 72.

Gas Models: Harness not properly connected to gas

controls.

• Check harness connections to gas valve coils, sensor and

main harness.

• Reconnect as required.

Gas Models: Restricted gas flow in gas orifice. • Clean out gas orifice.

Some Gas Models: Tripped high limit thermostat. • Reset thermostat.

Inoperative cycling thermostat. • Test thermostat and replace if inoperative.

Inoperative timer. • Test timer and replace if inoperative.

Broken, loose, or incorrect wiring. • Refer to wiring diagram.