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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
9. HEATER ASSEMBLY OR BURNER SHUTS OFF PREMATURELY
10. HEATER ASSEMBLY OR BURNER REPEATEDLY CYCLES OFF ON LIMIT THERMOSTAT
POSSIBLE CAUSE
TO CORRECT
Improper or inadequate exhaust system.
Weather hood flapper restricted.
• See INSTALLATION INSTRUCTIONS (supplied with
dryer) for exhaust requirements.
Gas Models: Insufficient gas supply.
• Check main gas line shut-off valve.
• Open partially closed gas shut-off valve, or correct low
pressure.
Gas Models: Dryer not properly equipped for type
of gas used.
• Refer to “Gas Burner Conversion Procedures” supplied in
gas burner conversion kit.
Gas Models: Improperly adjusted burner flame.
• Adjust flame. Refer to Paragraph 56.
Cycling off on limit thermostat.
• Momentarily connect a jumper wire across thermostat
terminals. If heater element heats or burner ignites when
jumper wire is connected, refer to Paragraph 10.
Gas models: Flame sensor contact closing.
• Replace flame sensor (Paragraph 39, step “d”) or adjust
burner flame. Refer to Paragraph 56.
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.
POSSIBLE CAUSE
TO CORRECT
External exhaust system longer or providing greater
restriction than recommended.
• Refer to INSTALLATION INSTRUCTIONS (supplied
with dryer) for exhaust system requirements.
Use of plastic or thin foil exhaust duct.
• Replace with solid or rigid flexible metal exhaust duct.
Clogged lint filter.
• Clean lint filter.
Lint in internal dryer ductwork.
• Disassemble dryer ductwork and clean.
Lint or other obstruction in external exhaust system. • Disassemble and clean exhaust system.
Hinged damper on exhaust system weather hood
not free to open.
• Free hinged damper or replace weather hood.
Limit thermostat cycling at too low a temperature.
• Replace thermostat. Refer to Paragraph 41.
Air leak around loading door. (Door not sealing due
to damaged seal or inoperative door catch.)
• Replace seal or catch.
Air leak at blower seal.
• Check and replace seal if necessary.
Air leak at cylinder seal(s).
• Check and replace seal(s) if necessary.
