Direct answer
For the GE GTD84 electric dryer, airflow, cycle choice and household power or gas supply should be proved before heater or valve service. First, use Timed Dry/high heat with a damp towel and check exterior airflow.
What this covers
- GE GTD84 electric dryer (GTD84E*)
- GE/GE Profile dryer; verify electric/gas and Sensor Dry/Steam equipment.
- The specific fault this record addresses: runs but does not heat
What it does not cover
- ×The same symptom on a different GE product line, which has its own record and its own cited source
- ×An on-screen error code whose meaning has not been checked against this exact model's manual
- ×Live electrical, gas, sealed-system, internal battery-cell or structural repair — a technician boundary, not a self-service step
Differential
What actually causes this, and how to tell them apart
These are ordered by how often each one is the answer, not by how easy it is to try. The point of the middle column is that two causes producing the same headline symptom rarely produce the same detail — that detail is what tells you which one you have before you change anything.
- 1
One leg of the 240V electric supply is missing
What separates it The drum turns, the light and controls work, and a timer or electronic control still counts down normally — because the motor and controls run on 120V from a single leg, while the heating element needs both legs for 240V. A dryer that runs its full cycle and produces zero heat, with no error code, is the classic presentation.
How to confirm Check the breaker panel for a double-pole breaker with one side tripped, or use a multimeter across the two hot legs at the outlet — it should read close to 240V. This is a household wiring check, not a dryer fault, and is worth doing before any parts are ordered.
- 2
The thermal fuse has opened from a restricted vent
What separates it The dryer ran hot or produced a burning smell before it stopped heating, and now heat never returns even after cooling. A thermal fuse is a one-time safety device — it does not reset itself once it has opened from overheating.
How to confirm A blown thermal fuse is downstream of the real problem, which is almost always restricted exhaust airflow. Replacing the fuse without clearing the vent reproduces the failure on the next long cycle.
- 3
The heating element or burner coil has failed outright
What separates it No heat on any cycle, no error code, supply confirmed present at the outlet or gas valve, and airflow is normal. This is the correct conclusion only after supply and thermal-fuse causes are ruled out — it is the least common cause despite being the first guess.
How to confirm A continuity check on the element (electric) or a visible, steady burner flame once ignited (gas) confirms this. Requires the panel to come off; if that's outside comfort, this is where to call for service.
Before you touch a setting
Record this first — changing settings destroys the evidence
Every item below stops existing the moment a reset, re-pair or settings change is made. Written down first, they are what separates the causes above; recovered afterwards, they are guesswork.
- Whether the drum turns and controls function normally with heat absent, versus the dryer not running at all — those are different symptoms with different causes.
- Any error code or indicator light shown at the moment heat should be present.
- For gas models: whether the burner assembly clicks, hums or attempts ignition, and whether any smell of gas is present.
- How long the dryer has been running long cycles or showing weak airflow before this started — heat loss that follows a vent-airflow complaint is a different repair than heat loss that appears suddenly.
Confirm supply is actually present
ReversibleFor electric models, check the breaker panel for a tripped double-pole breaker or test for 240V at the outlet. For gas models, confirm the manual shutoff valve is fully open. Do this before assuming any internal part has failed.
Run a short Timed Dry cycle and observe the ignition or element behavior
ReversibleListen for gas ignition clicking and look for a visible flame, or feel for building warmth on an electric model within the first two minutes.
Inspect the lint screen and accessible vent path
ReversibleA blown thermal fuse from restricted airflow will not stay fixed if the vent itself is not cleared first — correct airflow before replacing any heat-related part.
Arrange service for the confirmed failed component
ReversibleElement, igniter, gas valve solenoid, thermal fuse or (on a heat-pump model) the sealed refrigerant system are not typically DIY-safe repairs past the customer-accessible parts named in the model manual.
Verify with a full normal-load cycle
ReversibleConfirm the load is dry at the end of a normal cycle time, not just that heat is present at the start.
Model-specific
What is true of this model and not of its siblings
Generic advice for the product line fails here. Each item below is a property of this specific model family that changes which of the steps above apply to you.
- Model scope
- GTD84E*. GE/GE Profile dryer; verify electric/gas and Sensor Dry/Steam equipment.
- Fuel — ELECTRIC (vented); gas variant exists
- Typically an ELECTRIC vented dryer on 240V — no heat with the drum turning is often a half-tripped double breaker; reset both halves first. Gas version exists (igniter/valve for no-heat). Vent must be clear.
- Venting
- Clogged lint screen or blocked duct is the top cause of long drying/overheating — clean both regularly.
- Features
- A top-control GE dryer with Steam and Sensor Dry; SmartHQ Wi-Fi on smart builds.
- Symptom boundary
- This record covers GE GTD84 electric dryer when it runs but does not heat. A different symptom on the same hardware, or this symptom on a different GE product line, has its own record with its own causes and its own cited source.
Stop boundary
When this stops being a self-service repair
Continuing past any one of these costs more than the repair saves — in safety, in warranty, or in evidence a technician needs.
- !Gas odor at any point means stop immediately, do not operate any switch, ventilate, leave the area and call the gas utility or emergency services from outside.
- !A visible flame anywhere other than inside the sealed burner assembly is a fire, not a troubleshooting step.
- !Repeated thermal-fuse failures after clearing the vent point to a duct problem beyond the accessible section — call a vent-cleaning service or appliance technician rather than continuing to replace fuses.
Evidence ledger
Sources behind this answer
Visible sources support the visible claims. Home Product Support records the publisher, the fact used and the review date; community reports can suggest an issue but do not become a published fact on their own.
Where the manufacturer's article stops. GE Appliances publishes this as "Electric Dryer - Runs But Does Not Heat". GE Appliances' own troubleshooting article for this symptom. Title and text were read from GE's article at harvest (docs/verification/ge-articles.json) and the URL re-checked 2026-09-01. What that article does not carry is the model boundary — it is written for a product line, and GTD84E* is the scope applied here. Where a control label, terminal, indicator pattern or reset sequence differs on your unit, the manual for that exact model is the authority, not this page and not the article.
Exact questions
Common follow-ups
My GE GTD84 dryer isn't heating.+
If electric, reset the 240V double breaker fully — a half-trip leaves the drum turning with no heat, the most common cause. If gas, no-heat is the igniter or valve, not a breaker. Then clean the lint screen and vent, since a blocked vent overheats and blows the thermal fuse. Confirm your model's fuel type to know which parts apply.
My electric dryer tumbles, the light works, but there's no heat at all.+
Check the breaker panel first — a tripped double-pole breaker with only one side tripped will power the motor and controls (120V) but not the heating element (240V), producing exactly this symptom with no error code.
My gas dryer's igniter glows but the burner never lights.+
This is the single most common gas-dryer failure and it's the igniter itself — it's glowing but not reaching the resistance needed to open the gas valve. It's normally a documented customer-accessible part.
The dryer stopped heating right after it smelled hot.+
That's very likely a thermal fuse that opened from restricted vent airflow — it's a one-time safety part that won't reset itself. Clear the full exhaust path before replacing it, or it will blow again on the next long cycle.
My heat-pump dryer runs but clothes come out barely drier.+
Check the condenser coil for lint buildup — a heat-pump dryer moves heat through a refrigerant loop rather than generating it directly, so a partially blocked coil reduces effectiveness dramatically without stopping heat output completely. This is separate maintenance from the lint screen.
Does this answer apply to every GE model?+
No. It is scoped to GTD84E*. GE/GE Profile dryer; verify electric/gas and Sensor Dry/Steam equipment.
What should I record before troubleshooting not heating or cold dryer?+
Record the complete model identifier, exact message or indicator, software/firmware where visible, the operating stage and what still works.
Why is a factory reset not the first step?+
A reset can erase accounts, networks, maps, schedules or preferences without distinguishing not heating, cold dryer. The ordered checks preserve that evidence.
When should I stop and use qualified service?+
Stop for gas odor, smoke, arcing, a hot plug or repeated breaker trips.
Answer for the exact device and software version shown above.