Heater Assembly Or Burner Shuts Off Prematurely; Heater Assembly Or Burner Repeatedly Cycles Off On Limit Thermostat - Amana LG4219*2 Service Manual

a W A R N I N G
To reduce the risk of electric shock, fire, explosion, serious injury or death:
•Disconnect electric power to the dryer before servicing.
•Close gas shut-off valve to gas dryer before servicing.
•Never start the dryer 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.

70. HEATER ASSEMBLY OR BURNER SHUTS OFF PREMATURELY

POSSIBLE CAUSE
Improper or inadequate exhaust system.
Weather hood flapper restricted.
Gas Models: Insufficient gas supply.
Gas Models: Dryer not properly equipped for
type of gas used.
Gas Models: Improperly adjusted burner flame.
Cycling off on limit thermostat.
Gas models: Flame sensor contact closing
*Inoperative cycling thermostat.
*Inoperative timer.
Broken, loose, or incorrect wiring.
=Inoperative electronic control.
Inoperative moisture sensing control.

71. HEATER ASSEMBLY OR BURNER REPEATEDLY CYCLES OFF ON LIMIT THERMOSTAT

POSSIBLE CAUSE
External exhaust system longer or providing
greater restriction than recommended.
Use of plastic or thin foil exhaust duct.
Clogged lint filter.
Lint in internal dryer ductwork.
Lint or other obstruction in external exhaust system.
Hinged damper on exhaust system weather hood
not free to open.
*Limit thermostat cycling at too low a temperature.
Air leak around loading door. (Door not sealing
due to damaged seal or inoperative door catch.)
=Inoperative thermistor.
Air leak at blower seal.
Air leak at cylinder seal(s).
*Mechanical Timer Models only
=Electronic Control Models only
RS3200001 (502992R3)
Rev. 3
TO CORRECT
See INSTALLATION INSTRUCTIONS (supplied with
dryer) for exhaust requirements.
Check gas shut-off valve in dryer and main
gas line valve. Open partially closed gas shut-off
valve, or correct low pressure.
Refer to " Gas Burner Conversion Procedures"
supplied in gas burner conversion kit.
Adjust flame, paragraph 47.
Momentarily connect a jumper wire across
thermostat terminals. If heater element heats or
burner ignites when jumper wire is connected,
refer to paragraph 69.
Replace flame sensor or adjust burner flame,
prematurely. Burner flame improperly adjusted
paragraph 47.
Test thermostat and replace if inoperative.
Test timer and replace if inoperative.
Refer to appropriate wiring diagram.
Refer to SECTION VII to check out the electronic
control operation.
Refer to SECTION VIII to check out the moisture
sensing control.
TO CORRECT
Refer to INSTALLATION INSTRUCTIONS (supplied
with dryer) for exhaust system requirements.
Replace with solid or rigid flexible metal exhaust duct.
Clean lint filter.
Disassemble dryer ductwork and clean.
Disassemble and clean exhaust system.
Free hinged damper or replace weather hood.
Replace thermostat, paragraph 26.
Replace seal or catch.
Test thermistor and replace if inoperative.
Check and replace seal if necessary.
Check and replace seal(s) if necessary.
64
W001