Service manual

84 800170
Section 3 Troubleshooting (Dryer)
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
To reduce the risk of electric shock, fire, explosion, serious injury or death:
• Disconnect electric power to the washer/dryer before servicing.
• Close gas shut-off valve to gas dryer before servicing.
• Never start the washer/dryer with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the washer/dryer is properly grounded.
W014R1
WARNING
40. HEATING ASSEMBLY DOES NOT HEAT OR BURNER DOES NOT IGNITE
41. IGNITER DOES NOT GLOW (Gas Supply Sufficient) – GAS MODELS
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. A 240 Volt dryer uses two
fuses. Make sure both fuses are good.
Temperature selector switch set at FLUFF, or
inoperative.
• Reset or test switch and replace if inoperative.
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
142.
Gas Models: Inoperative sensor. • Test sensor and replace if inoperative. Refer to Paragraph
117, step c.
Gas Models: Inoperative igniter. • Test igniter and replace if inoperative. Refer to Paragraph
144.
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.
Inoperative cycling thermostat. • Test thermostat and replace if inoperative.
Broken, loose, or incorrect wiring. • Refer to wiring diagram.
POSSIBLE CAUSE TO CORRECT
No power to power leads on valve. • Check timer, selector switch, thermostats, motor switch,
and wiring.
Sensor failed with contacts open. • Replace sensor.
Igniter broken or open. • Replace igniter.