Samsung WF42H5200AP/A2 Won't Drain — What Part Fixes This Problem?
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Understanding the Problem
When a Samsung WF42H5200AP/A2 stops draining, water remains in the drum and the cycle won’t advance to spin. This is usually caused by a blocked or failed drain pump, kinked/blocked drain hose or drain trap, a faulty door lock that prevents the washer from entering drain/spin, or an electronic/control fault that does not start the pump. Front-load washers like the WF42H5200 use a pump and trap below the tub and a water-level sensor; any of these components or wiring/connectors can cause non-drain symptoms. Start with simple checks: remove visible lint and debris from the pump filter (accessible at the bottom front panel on many Samsung models), inspect the drain hose for kinks or clogs, and verify the drain path at the house plumbing. If hoses and filters are clear but the washer still won’t drain, test whether the pump runs (listen for it) when the machine is commanded to drain. If the pump is silent or noisy, the pump motor or pump assembly is most often the failed part. If the pump runs but water remains, suspect internal blockage (trap), failed check valve, or a tub-to-pump plumbing issue. Electronic faults (control board or timer) and the door lock can also prevent the drain cycle from starting.
Common Symptoms
Water remains in the tub after a cycle, washer stalls on drain/spin, error code related to draining (may vary), unusual pump noise or no sound from pump when draining.
Common Causes
- Clogged pump filter, pump inlet or drain hose (debris, lint, small garments, coins)
- Failed drain pump motor or internal pump impeller damage
- Faulty door lock/switch preventing drain cycle start
- Control board or wiring fault that fails to power the pump
- Blocked or kinked house drain or drain trap causing slow/no drainage
Popular Parts That Fix This Problem
These are the most common replacement parts that fix this problem. When you're ready to order, click below to find the right part at PartsDiscount.com — just search by your appliance model number for a guaranteed fit.
Helpful Repair Tip
Confirm a pump failure by selecting a drain/spin or spin-only cycle and listening at the front base for the pump running. If you hear nothing and the pump motor isn’t powered (use a multimeter at the pump leads only if you’re comfortable and the washer is unplugged for disassembly), replacing the drain pump is the next step. If the pump runs but the washer doesn’t drain, inspect the drain hose, pump inlet/trap, and the small rubber check valve in the pump outlet for a clog or broken flap.
Frequently Asked Questions
Can I fix a non-draining WF42H5200AP/A2 myself?
Yes, many drain problems are DIY-friendly: clear the pump filter, inspect and remove clogs from the drain hose, and check the pump for obvious debris. Always unplug the washer and turn off water before disassembling. If the pump motor needs replacing or you’re uncomfortable accessing internal components or testing electrical connections, hire a technician.
How do I know whether to replace the pump or the control board?
If the pump is silent and you can verify the control board is sending voltage to the pump during a drain command (requires multimeter and safe access), the pump is likely bad. If the pump never receives voltage and wiring is intact, the control board, drain relay, or door lock interlock may be at fault. In practice, if the pump is noisy, clogged internally, or running but not moving water, replace the pump first — it’s the most common and least expensive fix.
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