Owner’s manual
Error Codes
How do you change the belt on a Hotpoint dryer?
To change the belt on your Hotpoint HTDX100GM8WW gas dryer, we unplug the dryer, open the cabinet, release belt tension at the idler pulley, slip the old belt off the drum and motor pulley, then route and tension the new belt before reassembling and testing.
- Unplug the dryer from the wall outlet.
- Shut off the gas supply valve as an added safety step.
- Pull the dryer forward so you can work comfortably.
- Protect the floor and edges; dryer panels can be sharp.
- Keep screws organized by location for easier reassembly.
For model-specific cabinet access and panel fastener locations, follow the HTDX100GM8WW owner’s manual.
- Remove the lint screen, then remove the screws that secure the top (locations vary by revision).
- Release the top panel clips and lift the top.
- Remove the front panel (disconnect the door switch harness if needed).
- Reach under the drum to relieve tension on the idler pulley and slip the belt off the motor pulley.
- Slide the old belt off the drum.
- Install the new belt with the ribbed side against the drum; position it roughly where the old belt rode.
- Route the belt around the motor pulley and idler pulley, then let the idler apply tension.
- Rotate the drum by hand 1 to 2 turns to confirm the belt tracks correctly.
- Reinstall the front panel and top, reconnect wiring, then restore power and gas.
| Symptom | Common related part | Why it matters |
|---|---|---|
| Squealing or chirping | Dryer idler pulley WE03X31620 | Worn pulley can shred a new belt quickly |
| Thumping, belt slips | Drum glides or felt seal | Drag increases load on the belt |
| Belt broken, drum won’t turn | Dryer drum belt WE03X29897 | Correct belt restores drum rotation |
A correctly routed, properly tensioned belt keeps the drum turning smoothly, reduces strain on the motor, and helps your HTDX100GM8WW dry evenly without noise or premature belt wear.
Last updated: February 2026
Why is my Hotpoint dryer working but not heating?
If your Hotpoint gas dryer model HTDX100GM8WW tumbles but does not heat, the most common causes are a tripped breaker or blown fuse, the gas shutoff being closed, or a fuel supply interruption (LP tank empty or natural gas outage). Start with power and gas supply checks before replacing parts.
- Reset both dryer breakers (or replace both fuses); this model can run the motor with only one side of power but still not heat.
- Confirm the gas shutoff valve at the dryer and the main shutoff are fully open.
- If you use LP gas, confirm the LP tank is not empty.
- Clean the lint screen and check airflow at the outside hood.
- Inspect the vent path for kinks, crushing, or heavy lint buildup.
Poor venting can make cycles run long and clothes stay damp even when the burner is working. For best performance, use 4-inch rigid metal duct (or UL-listed flexible metal), keep the run short, and avoid crushing the duct. See the venting and troubleshooting chart in the HTDX100GM8WW owner’s manual.
| Item | Recommended | Avoid |
|---|---|---|
| Duct material | Rigid metal (best) | Plastic or combustible duct |
| Duct size | 4-inch diameter | Undersized duct |
| Routing | Short, straight, supported | Crushed, kinked, long runs |
If power and gas supply are correct and airflow is good, then a burner-side component is a common next suspect on gas dryers.
Common parts involved include:
- Ignition system components (igniter, sensor)
- Safety devices (thermal fuse, thermostats)
- Gas valve-related components
For this model, a frequently replaced heating-related part is the dryer burner igniter WE4M449.
A dryer that tumbles without heat is often a simple supply issue (breaker or gas shutoff). Fixing those first prevents unnecessary part replacement and also helps protect the dryer from overheating problems caused by restricted venting.
Last updated: February 2026
How do I find the model number on my HTDX100GM8WW?
Your Hotpoint gas dryer model HTDX100GM8WW has its model and serial number on a label on the front of the dryer behind the door. Open the dryer door and look along the front frame area for the identification label; write both numbers down for parts and service.
- Turn the dryer off.
- Open the dryer door fully.
- Look on the front frame (the area the door closes against).
- Find the label that lists Model # and Serial #.
- Record both numbers exactly as shown (letters and numbers).
Most Hotpoint dryer ID labels include:
- Model number (for example, HTDX100GM8WW)
- Serial number
- Electrical and gas rating information
| Item on label | What it’s used for |
|---|---|
| Model number | Matching diagrams and ordering the correct replacement parts |
| Serial number | Identifying the production run for service and compatibility |
Using the exact model number helps us match your dryer to the correct parts list and diagrams. That prevents ordering a look-alike part that does not fit, such as a door switch, belt, or igniter that varies by production series.
The location is shown in the HTDX100GM8WW owner’s manual.
Last updated: March 2026
