LG Dryer Not Heating: Check the Cycle, Airflow, and Power Safely

Use only checks that match the exact appliance or system and its official guide.

1. Check 1

   Stop using the dryer immediately for a gas smell, burning or electrical odor, smoke, flame, sparks, visible melting, an unusually hot cabinet or plug, or a breaker that trips again. Keep away from a suspected gas leak and do not operate electrical switches in the affected area.

   Expected result: Any of those hazard signs is present, or the appliance cannot be safely isolated from a dry accessible location.

   Next step: Leave the dryer out of service and obtain appropriate emergency, gas, electrical, or appliance help. Do not reset and retry it.

   Why this matters

   Why: This is a fire, gas, or shock risk rather than a normal no-heat setting issue.

2. Check 2

   With the dryer cool and no safety symptom, check the selected cycle and modifiers. Make sure Air Dry, a no-heat option, or Energy Saver is not selected; on supported LG models, Energy Saver can air-dry without heat for most of the cycle. Confirm the temperature and dryness setting in the exact model manual.

   Expected result: The cycle is Air Dry/no-heat or Energy Saver is active, or a normal heated cycle is selected.

   Next step: If safe, select the model's normal heated cycle for one controlled observation; if the appliance shows any odor, spark, overheat, or electrical problem, stop instead of running it.

   Why this matters

   Why: An unheated setting can look like a failed heater. If a normal heated cycle still produces no heat, continue to airflow, supply, and fault-code checks.

3. Check 3

   Remove lint from the filter and inspect it for a heavy coating or damage. If the model permits washing the filter, clean it as LG directs and let it dry completely before reinstalling it. Check the visible exhaust connection for a crushed, kinked, detached, or heavily linted section without dismantling the dryer.

   Expected result: The filter is blocked or wet, the hose is crushed/kinked, or the filter and visible hose are clear.

   Next step: Correct only the accessible filter or hose issue, then use a normal cycle only if there has been no safety symptom. If restriction remains or the Flow Sense indication returns, arrange professional vent inspection.

   Why this matters

   Why: Restricted airflow can reduce heating and lengthen drying; a wet filter should not be installed. A clear accessible path does not rule out a blockage in the wall or outside termination.

4. Check 4

   If the dryer has Flow Sense or an airflow code, note the exact display and inspect the outside exhaust outlet only from a safe position. The LG code list identifies d75, d80, d90, and d95 as restriction levels; do not reach into a moving or hot outlet and do not pull the appliance away from the wall.

   Expected result: The Flow Sense bars or d-code rises, the outside flap does not open normally, or airflow appears normal but the dryer remains cold.

   Next step: Stop the heated test and use a qualified vent-cleaning or appliance professional for persistent restriction. If airflow is adequate, continue to supply and heating-system service rather than replacing a part by guesswork.

   Why this matters

   Why: A restriction may be between the dryer and outside termination, possibly inside the wall; normal visible airflow does not prove the heater is healthy.

5. Check 5

   Identify whether the dryer is electric or gas and record the power state without opening the cabinet. Look for a blank display or drum light, a recently operated breaker, an nP or PS code, or a gas-supply indication. Do not measure voltage, adjust a terminal block, reconnect wiring, or open a gas connection.

   Expected result: The dryer has no power, a breaker has operated, nP/PS is displayed, the gas dryer has a gas-related indication, or the controls power normally.

   Next step: Have a qualified electrician assess supply or cord concerns and a qualified gas installer/service provider assess gas concerns. If external supply is correct but heat is absent, request appliance service.

   Why this matters

   Why: LG associates nP/PS with electrical supply or power-cord conditions and notes that gas and electric models have different supply paths; a powered dryer with persistent no heat needs diagnosis.

6. Check 6

   Record every display message and the behavior of the drum: whether it turns, whether the cycle starts, whether the drum stays cold, and whether an error returns. Include the model number and whether the problem is only on one cycle or on all heated cycles.

   Expected result: The drum turns but stays cold, an error code returns, the drum will not turn, or only one cycle lacks heat.

   Next step: Do not bypass the door or thermal safety system and do not perform an internal test after a hazard. Give the full record to LG or qualified service for a safe diagnosis.

   Why this matters

   Why: A turning cold drum points toward setting, airflow, supply, sensor, thermal, or heating-system branches; a non-turning drum is a separate start/motor diagnosis; a recurring code needs model-specific service.