Evidence grade: B1 — Trade practice
A washer that won't drain almost always comes down to five things, in order: a blocked pump filter, a drain hose installed wrong, a kinked or blocked hose, a blocked household drain, or a failed pump. The first four are easy home fixes; the fifth belongs to a technician.
Effort: Easy–Moderate · 20–60 minutes · bucket, towels, screwdriver, pliers; manufacturer support page as reference
PPE and ventilation
Unplug the washer before touching the pump filter or any access panel. Keep a bucket and towels handy — draining water is part of the job. Normal room ventilation is sufficient.
Diagnostic tree
1. Is the load unbalanced or oversized? - Yes → Redistribute the load (heavy items on opposite sides), remove excess if it's overstuffed, and run a drain/spin cycle. An off-balance drum can stop the cycle before draining [1]. - No → go to 2.
2. Can you reach and open the pump-filter access door (front bottom of the washer)? Is the filter full of lint, coins, or debris? - Yes → Place a towel and shallow pan under the door, unscrew the filter slowly (water will spill — this is normal), clear the debris, and check the impeller at the back of the filter cavity moves freely and isn't obstructed. Reinstall, then run a drain cycle [1]. - Filter clear → go to 3.
3. Is the drain hose end positioned between 600 mm and 1000 mm high, and is it free of kinks and crushes? - No (too high) → Lower it into the allowed range — a hose end above 1000 mm physically prevents drainage; below 600 mm it can siphon [1]. - Kinked or crushed → Straighten it, or replace the hose if it's damaged. - Height and shape OK → go to 4.
4. Is the blockage in the household drain rather than the washer? (Pull the hose out of the standpipe and pour water down it with a bucket.) - Household drain backs up → Clear the drain yourself (plunger/snake) or call a plumber — this is a plumbing problem, not an appliance problem. - Household drain flows freely → go to 5.
5. Filter clean, hose right, household drain clear — but the washer still won't pump out. - Yes → The pump itself or its control circuit has likely failed. Stop and call a pro. Pump replacement involves disassembly and wiring; the impeller should already move freely per check 2, so persistent failure means the pump motor or its drive signal is gone.
Stop rules
- Stop if water is leaking from the washer cabinet or the drain pump area while you work — turn off the water supply valves and call a pro.
- Stop if the pump filter housing is cracked or the impeller is jammed by a foreign object you can't remove without tools beyond a plier — forcing it breaks the housing.
- Electrical testing of the pump circuit (voltage at the pump) is technician work, not homeowner work.
Honest limits
- The 600–1000 mm drain-hose height rule comes from Haier's support documentation; check your own machine's manual, but the principle (too high prevents drainage, too low siphons) holds across front-loaders [1].
- On washers with no user-accessible filter door, step 2 requires removing a panel — if your manual doesn't describe it, don't improvise; that one is a pro visit.
- If troubleshooting doesn't help, the manufacturer itself points you to a qualified service technician — not to more DIY [1].
Sources
- Haier Support (NZ) — "Washing Machine Not Draining" (pump filter, drain hose height 600–1000 mm, household drain, spigot) — https://support.haier.co.nz/s/help-and-support/article/Washing-Machine-Not-Draining
Repair Lab · Release 1 · Evidence last checked September 30, 2026 · A project of AOJEL