WTW5100HW0 Inlet Valve & Water Hoses – Diagnosis and Repair Guide
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Understanding the Problem
What this covers: On a Whirlpool WTW5100HW0 top-load washer the word “inlet” usually refers to the water inlet valve assembly and the hot/cold fill hoses/screens. Common problems are no water fill, slow fill, filling on one side only (hot or cold), or leaks at the back of the washer. Step-by-step diagnostic and repair steps: 1) Safety first: Unplug the washer from power and shut off both hot and cold water supply valves at the wall. Turn off your home water if valves are stuck or leaking. 2) Inspect supply hoses: Pull the washer away from the wall and visually inspect the hot and cold inlet hoses for kinks, cracks or bulging. If hoses are older (>5 years) replace them. Also check the shutoff valves for full open position. 3) Check for leaks at connections: Tighten hose nuts by hand then 1/4 turn with pliers; if there is damage to threads or the nut is leaking, replace the hose or the rubber washer inside the hose coupling. 4) Remove and inspect inlet screens: Turn off water and disconnect hoses from the washer inlet. Look inside the inlet ports on the washer and at the hose fittings for small mesh screens or rubber filters clogged with sediment. Clean debris with a small pick and rinse screens. Reconnect and test. 5) Test fill behavior with diagnostic cycle: Restore power and open water valves. Run a manual or diagnostic fill cycle (refer to owner manual). Note whether the washer fills at all, whether both hot and cold open, whether it fills slowly, or whether you hear the click of the valve solenoids. 6) Listen for valve activation: With the machine powered and in a fill step, place your ear near the back where the inlet valve is. You should hear an audible click when the control energizes the valve. No click can indicate no command from the control OR a failed valve solenoid. 7) Access the inlet valve: Unplug washer and turn off water. Remove the top or rear access panel (for WTW5100HW0 the rear panel or top may give access to the valve). The inlet valve is mounted to the back with hose fittings and 2–3 electrical connectors. 8) Visual check: Inspect the valve for cracks, mineral build-up, or evidence of leaking. Check the rubber inlet gaskets/seals. If you see water seeping where hose connects, gasket likely bad. 9) Electrical test (multimeter): With washer unplugged, disconnect the valve electrical connectors and measure coil resistance across each solenoid. Typical solenoid resistance for washer inlet valves is in the low hundreds to a few thousand ohms; if you read open/infinite resistance the coil is bad. Compare left and right solenoid values — large differences suggest a bad coil. Also check harness continuity back to the control if needed. 10) Functional (live) test — cautious: If you are experienced, you can briefly energize the valve with 120V (or the appropriate voltage for the model) using a jumper to confirm it opens. If unsure, skip live testing and replace the valve if electrical tests fail. Always have water hooked up and a catch pan ready to avoid flooding if the valve sticks open. 11) Replace the valve if faulty: Remove hose fittings (have rags), remove mounting screws, swap the valve assembly with the new OEM or exact replacement, reinstall electrical connectors and hoses, turn on water and power and test multiple cycles including hot and cold. 12) Check inlet hoses and shutoff valves: If you have low water pressure on one side only, it may be a household plumbing issue or a partially closed shutoff rather than the washer valve. How to fix (summary): Clean or replace clogged inlet screens; replace old or damaged inlet hoses; replace the water inlet valve assembly if solenoids fail or if the valve leaks. Confirm correct wiring and control signals before replacing the control board. Safety note: Always disconnect power before working inside the washer. When testing live components, isolate risks of water leaks and only perform live tests if you know what you are doing. Flooding and electric shock are real hazards.
Common Symptoms
Washer won't fill or fills very slowly; fills only hot or only cold; water leak at back where hoses connect; washer fills and then overflows or won't stop filling.
Common Causes
- Clogged inlet screens or sediment in the municipal water supply
- Failed or stuck water inlet valve solenoid(s)
- Kinked, collapsed or damaged fill hoses or faulty shutoff valves
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Helpful Repair Tip
Listen for the inlet valve clicking during a fill; if you hear a click but no water, the valve may be clogged or blocked. If there is no click and the solenoid coils measure open on a multimeter, replace the inlet valve.
Frequently Asked Questions
How do I know if the inlet valve or the control board is causing the fill problem?
First check mechanical/obvious issues: hoses, shutoff valves and inlet screens. If the control is sending power you should hear or be able to see the valve click during a fill. Use a multimeter to check for voltage at the inlet valve connector during a commanded fill cycle—if voltage is present but the valve doesn’t open (and the coil has proper resistance), the valve is faulty. If the valve never receives a voltage signal, suspect the control board, timer, or wiring harness. If unsure, test with a qualified tech before replacing the control board.
Can I replace the inlet valve myself and how long does it take?
Yes—replacing the inlet valve is a common DIY job for a homeowner with basic tools. Allow 30–60 minutes: unplug washer, shut off water, remove access panel, disconnect hoses and wiring, unbolt old valve and swap in the new one. Reconnect hoses, turn on water and power, and test. If you’re uncomfortable working with electrical testing or live voltage, hire a technician.
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