Samsung · Dryer
Samsung Dryer H01 Error Code
Gas supply not detected on gas models
What this error means
H01 appears on Samsung gas dryers when the control does not detect gas supply pressure or the gas valve failed to open during a heat request. Electric models never show H01—confirm your unit is gas before troubleshooting fuel.
How H01 is detected
Samsung dryer models lock the door or lid before energizing fill, heat, or high-speed spin. H01 means the latch switch never sent a "locked" signal to the main control, or the lock motor did not complete its travel. On Samsung DVE45R6100W, Samsung DVG45R6100W, and similar variants, clothing caught in the gasket, a misaligned strike, or a failed latch assembly are the most common mechanical causes—not the board itself.
Inspect the door gasket perimeter and strike alignment before replacing the latch. Delay Start set accidentally from control panel is reported frequently on this code. After correcting mechanical issues, press delay start or time button until h01 clears. If the latch clicks but H01 persists, the door lock switch or wiring harness to the control board likely needs testing with a multimeter.
Do not force the door open during an active cycle; wait for the lock to release when the board de-energizes the lock motor—usually two to three minutes after canceling power on most Samsung units.
Common causes
- Gas shutoff valve behind the dryer turned perpendicular to the pipe
- Kinked or crushed gas flex line restricting flow
- Utility gas outage or depleted propane tank on LP installs
- Failed gas valve coils not opening after igniter glow
Step-by-step fixes
- 1Verify the gas shutoff handle is parallel to the pipe for full open
- 2Check that other gas appliances in the home operate normally
- 3Inspect the flex line for sharp bends or damage—replace if flattened
- 4On LP systems confirm the tank valve is open and gauge shows fuel
When to call a technician
Open gas supply with H01 during heat and no flame after igniter glow needs gas valve or pressure switch service.
Affected models
- Samsung DVG45R6100W
- Samsung DV45K6200GZ
- Samsung DVG50R5400V
Prevention & maintenance
- Wipe the door gasket weekly and avoid overloading items against the seal—H01 often starts as a slow leak or latch misalignment.
- Record when H01 appears in the cycle and whether it clears after a 60-second power reset on your Samsung dryer—that detail speeds diagnosis if you call service.
- Keep the model and serial number from the rating plate when ordering parts for H01; Samsung uses multiple revisions with different harness lengths and board firmware.
- Photograph wiring connector orientation before disconnecting any component while troubleshooting H01; reversed plugs on pumps and valves cause immediate repeat faults.