Direct answer
For the Whirlpool WTW4855 top-load washer, treat standing water as a drain-path problem until the pump, filter, hose and household drain are separated. First, cancel the cycle, run Drain/Spin and listen for the pump.
What this covers
- Whirlpool WTW4855 top-load washer (WTW4855H*)
- Whirlpool top-load washer; status codes vary, so confirm the complete model number.
- The specific fault this record addresses: will not drain or stops with water inside
What it does not cover
- ×The same symptom on a different Whirlpool product line, which has its own record and its own cited source
- ×An on-screen error code whose meaning has not been checked against this exact model's manual
- ×Live electrical, gas, sealed-system, internal battery-cell or structural repair — a technician boundary, not a self-service step
Differential
What actually causes this, and how to tell them apart
These are ordered by how often each one is the answer, not by how easy it is to try. The point of the middle column is that two causes producing the same headline symptom rarely produce the same detail — that detail is what tells you which one you have before you change anything.
- 1
An object is jamming the drain pump impeller
What separates it The pump makes a humming or buzzing sound without the normal water-movement noise, or makes a rattling sound as something strikes the impeller.
How to confirm On a machine with an accessible filter, the impeller is usually visible and turnable by hand once the filter is out and power is disconnected. On a top-load washer without an owner-accessible filter, this is a service diagnosis.
- 2
The drain hose is kinked, or pushed too far down the standpipe
What separates it Water drains and then partially returns, or the tub refills on its own after draining. A drain hose inserted too deep into the standpipe creates a siphon that pulls water back out of the machine.
How to confirm Check the hose for kinks behind the machine, and confirm the insertion depth and the standpipe height against the manual's stated range — both a too-low and a too-high standpipe cause drain faults.
- 3
The household drain or standpipe itself is restricted
What separates it The washer drains but the standpipe backs up and overflows, or a nearby sink gurgles or backs up when the washer drains.
How to confirm This is a plumbing problem rather than an appliance one — the tell is water backing up outside the machine rather than sitting inside it.
- 4
Excess suds are suppressing the drain cycle
What separates it The machine reports a drain problem after a load with heavy detergent, and foam is visible through the door or in the tub.
How to confirm See the suds-foam symptom — many machines pause draining and run extra rinses when they detect foam, which presents as a drain fault.
- 5
The drain pump has failed electrically
What separates it No pump sound at all during a Drain/Spin cycle — not a hum, not a rattle, silence where a pump should be audible.
How to confirm This is the conclusion once the filter is confirmed clear and the hose routing is correct.
Before you touch a setting
Record this first — changing settings destroys the evidence
Every item below stops existing the moment a reset, re-pair or settings change is made. Written down first, they are what separates the causes above; recovered afterwards, they are guesswork.
- Whether the pump makes any sound at all during a Drain/Spin cycle — a hum with no water movement, a rattle, or complete silence are three different faults.
- Whether water backs up outside the machine at the standpipe (a plumbing problem) or simply sits inside the tub (an appliance problem).
- Whether the tub drains and then refills on its own, which points specifically at drain-hose siphoning rather than a blockage.
- How much detergent was used on the affected load, since heavy suds can trigger a drain fault on a machine with a working pump.
Cancel the cycle and run Drain/Spin, listening for the pump
ReversibleThis separates a pump that is not running at all from one that is running against a blockage.
Check the drain hose for kinks and confirm the standpipe height and insertion depth
ReversibleA hose pushed too far into the standpipe siphons water back out; the manual states both a minimum and a maximum standpipe height.
Arrange service for a silent or jammed pump once the filter and hose are confirmed clear
ReversibleOn a top-load machine with no owner-accessible filter, a pump problem is a service call rather than a maintenance task.
Run a short rinse and drain with no laundry to confirm
ReversibleConfirms the full path is clear before trusting it with a real load.
Model-specific
What is true of this model and not of its siblings
Generic advice for the product line fails here. Each item below is a property of this specific model family that changes which of the steps above apply to you.
- Model scope
- WTW4855H*. Whirlpool top-load washer; status codes vary, so confirm the complete model number.
- Type — entry TOP-LOAD with agitator
- An entry TOP-LOAD washer, typically with a center AGITATOR and a Deep Water Wash option. With an agitator, avoid wrapping long items around the post and do not load above its top — both cause tangling and poor cleaning.
- Deep Water Wash
- Has a Deep Water Wash for a fuller tub on bulky loads; the default eco water level is normal HE behaviour, not an underfill.
- Fault codes & lid lock
- F#E# codes; lid must lock before spin, so a 'won't spin' is usually balance or the lid-lock.
- Symptom boundary
- This record covers Whirlpool WTW4855 top-load washer when it will not drain or stops with water inside. A different symptom on the same hardware, or this symptom on a different Whirlpool product line, has its own record with its own causes and its own cited source.
Stop boundary
When this stops being a self-service repair
Continuing past any one of these costs more than the repair saves — in safety, in warranty, or in evidence a technician needs.
- !Stop for wastewater backing up out of the standpipe or a nearby drain — that is a household plumbing problem and continuing to run the washer will flood the floor.
- !Broken glass in the filter housing, a burning smell from the pump, or water reaching wiring or an outlet means stop and disconnect power before anything else.
Evidence ledger
Sources behind this answer
Visible sources support the visible claims. Home Product Support records the publisher, the fact used and the review date; community reports can suggest an issue but do not become a published fact on their own.
Where the manufacturer's article stops. Whirlpool Product Help publishes this as "Not Draining - Washer". Whirlpool's own top-load washer article for this symptom. Probed 2026-08-23: title-verified. What that article does not carry is the model boundary — it is written for a product line, and WTW4855H* is the scope applied here. Where a control label, terminal, indicator pattern or reset sequence differs on your unit, the manual for that exact model is the authority, not this page and not the article.
Exact questions
Common follow-ups
My Whirlpool WTW4855 doesn't clean well.+
On an agitator top-loader, loading and water are the usual causes. Do not overload or wrap items around the agitator, use the Deep Water Wash option for bulky or dirty loads so there is enough water, and use the correct amount of HE detergent. Poor cleaning is far more often a loading, water-level or detergent issue than a mechanical fault.
There's still water in the drum and the pump is humming but nothing happens.+
A hum with no water movement points to a clogged filter or a jammed pump impeller rather than a failed pump. On a front-load washer, open the drain pump filter behind the small door at the bottom front of the cabinet — over a pan and towels, because it will release the standing water first.
The washer drains but then water comes back into the drum.+
That is drain-hose siphoning, not a pump fault. The hose is likely pushed too far down the standpipe, which lets it pull water back out of the machine. Check the insertion depth and standpipe height against the manual's stated range.
Where is the drain filter on a top-load washer?+
Most top-load washers have no owner-accessible drain filter at all — that is a front-load feature. On a top-loader, a confirmed drain blockage past the hose is normally a service call rather than something to clean out yourself.
Does this answer apply to every Whirlpool model?+
No. It is scoped to WTW4855H*. Whirlpool top-load washer; status codes vary, so confirm the complete model number.
What should I record before troubleshooting not draining or water left or drain pump?+
Record the complete model identifier, exact message or indicator, software/firmware where visible, the operating stage and what still works.
Why is a factory reset not the first step?+
A reset can erase accounts, networks, maps, schedules or preferences without distinguishing not draining, water left, drain pump. The ordered checks preserve that evidence.
When should I stop and use qualified service?+
Stop for wastewater backup, glass, burning odor or water near wiring.
Answer for the exact device and software version shown above.