Hotpoint Gas Dryer Igniter Glows But Flame Won't Stay... | appliancefaults.com

Technical Background:

The dryer's MCU (Main Control Unit) sends voltage to the igniter to heat it. Once the igniter reaches the correct temperature, the gas valve opens, allowing gas to flow. The igniter then ignites the gas. The flame sensor detects the flame and signals the MCU to keep the gas valve open. If the flame sensor doesn't detect a flame, the MCU shuts off the gas valve for safety.

Symptoms:

The Hotpoint gas dryer powers on and the igniter glows red hot, indicating it's receiving voltage. However, when the igniter stops glowing, the main gas burner fails to ignite and stay lit. The dryer cycles without producing heat.

Possible Causes:

Faulty flame sensor
Weak or failing gas valve solenoid(s)
Insufficient gas pressure
Blocked burner tube or orifice
Defective dryer control board (MCU)
Venting issues restricting airflow

Solution:

1

Disconnect power to the dryer at the breaker panel.
2

Locate the flame sensor near the burner. Disconnect the wire leads. Use a multimeter to test for continuity when heated. A good sensor will show continuity when exposed to heat.
3

Inspect the gas valve solenoid coils. Use a multimeter to check the resistance of each coil. A typical reading is between 1000-2000 ohms, but refer to the dryer's wiring diagram for specific values.
4

Check the gas supply pressure. Consult a qualified gas technician to measure the incoming gas pressure using a manometer. It should be within the range specified by the dryer's manufacturer, typically 4-7 inches of water column.
5

Examine the burner tube and orifice for any obstructions. Clean with a small brush or compressed air.
6

Verify proper venting. Ensure the vent hose is not kinked or blocked and that the outside vent is clear of lint buildup.
7

If all other components test good, suspect a faulty dryer control board (MCU). Replacement might be necessary.

Safety Warning:

Disconnect power to the dryer at the breaker panel (Lock Out/Tag Out - LOTO) before performing any repairs. Gas appliances can pose a fire and explosion hazard. If you are not comfortable working with gas, consult a qualified gas technician. High voltage is present within the dryer; exercise caution.

Prevention:

Clean the lint filter after every load. Inspect and clean the dryer vent at least once a year to prevent lint buildup, which can restrict airflow and cause overheating. Periodically check the gas connection for leaks using a soapy water solution.

Expert Tip:

Some Hotpoint dryers have a diagnostic mode. Press and hold the Start button, then press and hold another button such as Signal or Temperature for several seconds. This may display error codes or allow you to run component tests. Consult the service manual for your specific model.

Follow-up Questions:

Frequently Asked Questions

•What is the typical lifespan of a flame sensor in a gas dryer?

A flame sensor typically lasts 3-5 years with normal use, but this can vary depending on usage and environmental factors. Regular lint filter cleaning helps extend its lifespan.

•How do I check the gas valve solenoid coils if I don't have a multimeter?

While a multimeter is the most accurate way, you can sometimes visually inspect the coils for signs of burning or damage. However, a visual inspection is not conclusive, and a multimeter is highly recommended for accurate diagnosis.

•Where can I find the wiring diagram for my specific Hotpoint dryer model?

The wiring diagram is usually located inside the dryer, often taped to the back panel or inside the control panel housing. You can also find it online by searching for the model number and 'wiring diagram'.

Hotpoint Gas Dryer Igniter Glows But Flame Won't Stay Lit: Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the typical lifespan of a flame sensor in a gas dryer?

•How do I check the gas valve solenoid coils if I don't have a multimeter?

•Where can I find the wiring diagram for my specific Hotpoint dryer model?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: