Problem:
Gas flame comes on first few times then quits and ignitor keeps cycling on and off but never lets the gas go.
Answer:
Replace the coils on the Gas Valve.

Problem:
No flame, no ignitor at all,
Answer:
Inspect igniter for small burnt spot on dark gray or black part of ignitor or check for 110 volts to ignitor when dryer should be calling for heat

• Check burner solenoid coils. Sometimes these open circuit after heating up
• Check for loose connection at burner valve
• Check thermostats for proper temperature operation
• Check the vent.

Tip:  You can pull the dryer a few  feet from the wall and  unhook the vent hose from the back of the dryer, and do a load of clothes with NOTHING attached to the vent pipe on the back of the dryer to determine if the problem is in the vent or in the dryer  To Clean the Vent pipe in the wall....You can use a vent cleaning brush as seen on our parts page, or a fish tape, garden hose, drain tape , with a rag secured to the end of it and pull it through. I've also seen people use leaf blowers.

• Check all thermostats
• Check the element for a short to ground
• Check the vent.

Tip:  You can pull the dryer a few  feet from the wall and  unhook the vent hose from the back of the dryer, and do a load of clothes with NOTHING attached to the vent pipe on the back of the dryer to determine if the problem is in the vent or in the dryer  To Clean the Vent pipe in the wall....You can use a vent cleaning brush as seen on our parts page, or a fish tape, garden hose, drain tape , with a rag secured to the end of it and pull it through. I've also seen people use leaf blowers.

• Check all air flow ducts for blockage
• Check all thermostats
• Check blower fan for stripped out or full of lint
  Note: this is a common problem The hole in the center of the blower wheel should be D shaped. They strip out after awhile and then spin freely on the shaft, thus not spinning at the same speed as the motor. 
• Check for belt slippage
• Check gas valve for proper operation
• Check heat selector switch
• Check lint screen
• Check switch mounted on motor
• Check timer
• Check the vent.

Tip:  You can pull the dryer a few  feet from the wall and  unhook the vent hose from the back of the dryer, and do a load of clothes with NOTHING attached to the vent pipe on the back of the dryer to determine if the problem is in the vent or in the dryer  To Clean the Vent pipe in the wall....You can use a vent cleaning brush as seen on our parts page, or a fish tape, garden hose, drain tape , with a rag secured to the end of it and pull it through. I've also seen people use leaf blowers.

• Check blower fan for frozen bushings
• Check door switch
• Check drum belt
• Check drum bushings
• Check idler arm and wheel
• Check motor for power
• Check support rollers or pads
• Check timer

• Check all thermostats
• Check circuit breakers or fuses
• Check for spark ignition (Older models only)
• Check gas burner for flame
• Check gas pilot light (Older models only)
• Check glo bar for glow. Should be bright red
• Check coils on gas valve
• Check heat selector switch
• Check sensor on side of burner housing. Contacts should open after glo bar has been red a few seconds
• Check switch mounted on motor. Two of the terminals are for supplying power to gas valves
• Check terminals going to gas solenoid valves for power
• Check timer

• Check PUSH TO START switch
• Check connections from power cord to terminal block
• Check door switch
• Check power at outlet. Should be reading 110 volts.
• Check timer for power
• Try door switch for action or 'clicking' noise

• Check for power to timer motor
• Check sensors (on some models)
• Check thermostats
• Check timer motor for advancing
• Check timer switch leads to timer motor