LG's dryer lineup splits down the middle: vented models that dry with a conventional heating element, and ventless dual inverter heat pump models that dry with a refrigerant loop instead of raw heat. The failures split the same way — open elements, drifted thermistors, and blown thermal fuses on vented units; lint-choked heat exchangers and condensate problems on heat pumps.
An inverter-controlled dryer usually logs what went wrong, so we start with the error codes — then confirm with a meter. A thermistor that reads plausibly-but-wrong can mislead the control for months without ever tripping a code, which is why component tests come before any parts.
LG dryer running but not heating
On vented models this comes down to three checks: the heating element for continuity, the thermal fuse, and the thermistor's resistance against its temperature curve. A blown thermal fuse is a symptom, not a cause — it almost always means restricted airflow overheated the machine, and unless that's fixed the new fuse blows too.
LG heat pump dryer not drying clothes
Dual inverter heat pump models have no vent — drying depends entirely on clean heat exchanger fins and working condensate drainage. A film of fine lint on the evaporator can cut drying capacity dramatically without triggering any error, which is why these machines get a physical inspection, not just a code read.
LG dryer taking two or three cycles to dry
On vented units, long dry times are an airflow problem until proven otherwise — a crushed or lint-packed duct makes even a healthy dryer limp along. The other quiet culprit is the moisture sensor bars: coated with fabric softener residue, they misjudge the load and end cycles at the wrong time.
LG dryer stops mid-cycle or shows error codes
Mid-cycle shutdowns usually trace to a worn door switch, an overheat trip caused by poor airflow, or a motor and inverter fault the control catches and aborts on. The stored codes narrow it quickly; the component tests confirm it before anything is replaced.
Independent LG service, tested before quoted
PV Appliance Repair is an independent, insured service company — we are not affiliated with or certified by LG, and we never present ordinary trade experience as factory authorization. What you get instead: a technician tests the actual failure, explains the finding, and gives you a written quote before any work starts. The service call is waived when you approve and complete the repair, and if we can't fix it, you don't pay. Every completed repair carries a 90-day warranty on the documented work and installed part.