Samsung DV42H5600EWA Dryer Troubleshooting — What to Check & How to Fix It
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Understanding the Problem
This guide covers the most common problems owners see with the Samsung DV42H5600EWA dryer (won't heat, won't start/tumble, noisy operation, long cycles or poor drying). Below are focused diagnostic and repair steps you can follow at home. 1) Verify model and power type: Confirm whether your unit is electric or gas (check the model label on the door opening or back panel). Diagnostic and repair steps differ for electric vs gas heating systems. 2) Symptom triage: Start by identifying the exact symptom — no heat, intermittent heat, no drum spin, unusual noise, or error codes on the display. 3) Basic checks (do these first): a. Power: Unplug or flip the breaker and then restore power to reset the control board. For electric dryers, check the household breaker (dryer often uses a double-pole 240V breaker). For gas dryers, ensure gas valve is open. b. Venting & filters: Clean the lint screen and inspect the exhaust vent to the outside — restricted airflow causes long dry times. c. Error codes: Note any codes shown on the display and consult the user manual for meaning. 4) No heat (electric): a. Check fuses/thermal cutouts: Many Samsung dryers have a thermal fuse or high-limit thermostat that opens if the dryer overheated. Locate and test the thermal fuse for continuity with a multimeter; replace if open. b. Check heating element: Inspect the heating element assembly for breaks or burned insulation; test for continuity. c. Check power to element: Verify the dryer is receiving proper voltage at the heating element terminals (240V across the element for electric models). d. Check cycling thermostat/thermistor: Faulty thermostat or thermistor may prevent heating; test for continuity and correct resistance. e. Check control board/relays: If thermostats and element are good but no heat or intermittent heat, the control board or solid-state relay may be faulty. 5) No heat (gas): a. Check igniter: On gas models an igniter that fails to glow or opens will prevent gas flow. Test igniter continuity and replace if broken. b. Check gas valve coils: If the igniter glows but burner does not stay lit, the gas valve coils may be weak. Test per service manual. c. Check flame sensor/thermistor and safety cutoffs. 6) Dryer won’t tumble or motor not running: a. Check belt: Open cabinet and inspect drum belt for breakage. b. Check motor: If belt and idler look good but motor doesn’t start, test motor for continuity and inspect start capacitor if present. c. Check door switch and lid switch: A bad door switch will prevent start. d. Check control board and wiring harness. 7) Loud noise, grinding, or squealing: a. Inspect drum rollers, glides, bearings, and idler pulley — worn rollers and bearings cause rumbling. b. Check blower wheel for debris and wear. c. Inspect motor mounts and drum felt seals. 8) Moisture sensor problems or long cycles: Clean moisture sensor bars (inside the drum lip) with a soft cloth and rubbing alcohol. Replace sensor if cleaning does not restore correct sensing. 9) Step-by-step replacement example — thermal fuse (electric dryer): a. Unplug dryer and pull it away from the wall. b. Remove the lower access panel or rear panel (model dependent). c. Locate thermal fuse on the blower housing or exhaust duct; disconnect wires and test with multimeter. d. If faulty, remove mounting screw(s) and replace fuse with manufacturer-specified part. e. Reassemble panels, plug in, and test. 10) Step-by-step replacement example — drum belt: a. Unplug dryer. b. Remove front panel and door (release hinge screws) to access drum. c. Lift out drum, loop new belt around drum and through idler pulley per routing diagram, re-seat drum, reassemble and test. Safety note: Always disconnect power (unplug or switch off breaker and close gas valve for gas models) before opening the dryer. Use proper personal protective equipment and follow anti-static precautions for control boards. If you’re unsure about gas valve/igniter work or electrical mains voltage checks, consult a qualified technician.
Common Symptoms
No heat or weak heat; dryer runs but drum won't turn; loud rumbling or squealing; very long dry times; error codes or display faults.
Common Causes
- Clogged venting or lint filter causing poor airflow and long dry times
- Failed thermal fuse, thermostat, heating element (electric) or igniter/gas valve coils (gas)
- Worn drum belt, idler pulley, drum rollers, or motor causing no tumble or noisy operation
Popular Parts That Fix This Problem
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Helpful Repair Tip
Start with the airflow and lint screen. If cleaning the lint screen and exhaust improves drying, you likely avoided part replacement; if heat is absent but the fan runs, check the thermal fuse and element/igniter next.
Frequently Asked Questions
My DV42H5600EWA runs but there's no heat — can I fix this myself?
Yes, often you can troubleshoot and fix no-heat issues yourself if you're comfortable working safely with electricity or gas. Start by unplugging power and checking the lint screen and exhaust vent. For electric units, test the thermal fuse and heating element with a multimeter; replace any open components. For gas units, inspect the igniter and gas valve circuit. If you're not comfortable testing live voltage or working on gas lines, hire a qualified technician.
How do I identify whether my dryer is gas or electric?
Look at the model label (inside door frame or back panel) — it usually lists 'electric' or 'gas' and voltage. Electric dryers require a 240V supply and have a heavy 3- or 4-prong cord; gas dryers have a 120V cord and a gas supply line connected to the rear. If you see a gas flex line and shutoff valve at the dryer, it's a gas model.
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