Epson Waste Ink & Maintenance Errors (0x9A, E-11, W-11, T04D1): Fixes
Waste ink is the one Epson error family where the printer is not broken — it is full, by design, on a counter Epson set. This guide covers the whole story in Epson's own framing: the warning and stop codes (W-11 and E-11 on display-code models), the plain-language ink-pad messages on WorkForce and EcoTank, the 0x9A number that circulates online, and the maintenance-box models (T04D1, T6711) where Epson hands the job to the owner. It also states plainly what Epson documents about resetting — nothing — and why the pads are a service part, so you can plan the service visit before the printer plans it for you.
Where waste ink comes from, and why the printer counts it
An inkjet printer spends ink on more than pages. Every head cleaning pushes ink through the nozzles to clear them; every power-on runs priming and maintenance cycles; borderless printing deliberately oversprays the page edge. All of that ink has to go somewhere, and Epson's design sends it into an absorber — felt-like pads in a tray inside the printer, or a replaceable maintenance box on models so equipped. The printer cannot see the absorber, so it counts instead: firmware tracks the ink it has pumped through maintenance operations and estimates the absorber's remaining capacity. When the estimate approaches the limit, the printer warns; when it reaches the limit, the printer stops, because the next cleaning's worth of ink would have nowhere safe to go. Two consequences follow. First, the counter is an estimate driven by your usage pattern — heavy cleaning users arrive sooner, which is why a printer that 'barely printed' can still reach the limit if it spent its life cleaning (including automatic maintenance cycles while idle). Second, the stop is protective, not punitive: it exists because waste ink that overflows inside the machine damages electronics and makes a mess no cleaning cycle can undo. Every code in this guide is that counter speaking, in the several dialects Epson's families use.
W-11: the warning you are meant to act on early
On display-code models (the Expression Home XP and EcoTank L families), W-11 is the counter's early voice. Epson's table defines it exactly: 'An ink pad is nearing the end of its service life', with the remedy 'Contact Epson or an authorised Epson service provider to replace the ink pad', the note that the pad 'is not a user-serviceable part', and — the detail that makes W-11 a warning rather than a stop — 'Press the start button to resume printing', with the message displayed until the pad is replaced. Read that combination carefully, because it is Epson's intended usage pattern in miniature: you may keep printing, the message will keep reminding you, and the booking is your job to make while the machine still works. Owners who treat W-11 as noise discover its sequel at the worst time — mid-deadline — because the counter does not pause for convenience. The practical play is to note W-11's first appearance, check whether your model uses pads or a box (the next sections separate them), and if pads, book the service while the printer is still earning. W-11 is the most owner-friendly code in this guide precisely because it arrives early; the only way to waste it is to dismiss it.
E-11: the stop, and why there is no owner reset
E-11 is W-11's deadline kept. Epson's table: 'An ink pad needs to be replaced. Contact Epson or an authorised Epson service provider to replace the ink pad. It is not a user-serviceable part.' At E-11 the printer stops printing and stays stopped, and no documented owner action — no button, no menu, no power cycle — clears it, because the condition it reports is physical capacity, not a state the firmware can be talked out of. Epson's design intent is plain: the pads come out and are replaced, the counter is reset as part of that service, and the machine returns with its absorber capacity genuinely restored. Everything about E-11 that frustrates owners (its finality, its timing, its service cost on a cheap printer) follows from that intent, and the honest page says so rather than pretending a workaround is Epson's plan. What owners can control is only the timing of their response — W-11 gave the warning — and the economics: on entry-level XP models the service quote deserves a clear-eyed comparison against replacement, a comparison the service provider can price exactly because the diagnosis is already done. The code is the diagnosis; E-11 needs no troubleshooting section, and any page offering one is selling something.
The plain-language messages: how WorkForce and EcoTank word the same stop
Most Epson owners never see W-11 or E-11, because the WorkForce and EcoTank LCD families word this condition in sentences instead of codes. Epson's manuals document the pair: 'The printer's ink pad is nearing the end of its service life. Please contact Epson Support' at the warning stage, and at the stop, 'The printer's ink pad is at the end of its service life. Please contact Epson Support' — with the guide text adding that the pad is not a user-serviceable part, and the WF-C4810 support FAQ's version distinguishing borderless-printing pads in the same terms. These messages are E-11/W-11 in prose: same counter, same protective stop, same service route, different display dialect. The translation matters practically. An owner searching the sentence finds this family; an owner searching a guessed code finds folklore. It also matters for scope: the prose messages appear on machines whose manuals never print a W/E code table, so neither code should be projected onto them — a WorkForce showing the sentence has the condition, not 'error E-11', and quoting the sentence verbatim to support is more useful than quoting a code from another family's table. When in doubt, report what the machine actually displays; Epson's channels work from their own dialects fluently.
0x9A: the number Epson never published for this condition
Search the waste-ink stop and you will meet 0x9A, confidently defined on fix-it sites as the WorkForce waste-ink error code. Apply this site's rule: a meaning is published when manufacturer sources support it, and for 0x9A they do not. Epson's documentation presents the ink-pad condition in the prose messages above and in the E-11/W-11 table — never as 0x9A — and no Epson manual or support page checked for this guide assigns the number to the counter. The number may well live in the service register alongside other 0x codes (the family is real, and this site's 0x97 and 0xF1 pages explain its documentation status), but an unpublished-in-public assignment cannot be verified, and an unverifiable 'it means the pads' claim is exactly how owners end up running pad-counter utilities against a code that might mean something else on their model. So: if your WorkForce displays 0x9A, treat it by the family's documented rules — a fatal printer-error display whose documented response is the power cycle and then Epson Support, with the exact number reported — and if your machine displays the ink-pad sentence, treat it as the pad condition it plainly is. The two presentations converge at the service channel; they should not be merged by guesswork before it.
Maintenance-box models: the owner-serviceable branch of the family
Epson's second design answer to waste ink is to make the absorber a part the owner swaps: the maintenance box, a sealed cartridge of absorbent material with a counter chip, fitted to many EcoTank and WorkForce models. On these machines the family's messages change their ending: instead of 'contact Epson to replace the pad', the printer reports the box nearing or reaching its end and the manual documents the owner replacing it — no service visit, no counter sermon, a five-minute swap. The box models also change the failure list: a box can be full, not installed, or not recognized, each with its own message, and a full or unrecognized box stops printing and blocks head cleaning and power cleaning (the printer will not pump ink into a box it believes cannot take it). The practical craft is identification: does your model take a box, and which one? The manual's maintenance section answers both, and the next two sections cover the two part numbers this site's map names. If your model has a box, the waste-ink family's centre of gravity moves from service planning to shelf stocking: one spare box on hand converts the stop from an event into a pause.
T04D1: the EcoTank maintenance box
T04D1 (full part number C13T04D100, sold as the Epson Ink Maintenance Box T04D1) is the box for the EcoTank generation that includes the ET-3700, ET-3750, ET-4750 and ET-4760 families and their L-series counterparts. Epson lists it as the model's maintenance box, and the manuals for those models document the replacement as a user procedure: power state as directed, old box out, new box in until it seats, old box handled upright and disposed of as the ink-soaked waste it is. When an ET-47xx-class machine stops with a maintenance-box message, T04D1 is the part the message is asking for — verify against your own model's manual, because box assignments are per-model and neighbouring EcoTanks take different boxes. Two owner notes Epson's framing supports: buy genuine or at least chip-correct boxes, because the printer reads the box's chip to know its capacity and an unreadable box is an unrecognized box regardless of its absorbent state; and do not attempt to empty and refit a full box — the absorbent is spent, the chip has counted it spent, and Epson documents the box as a replacement part, not a refillable one.
T6711: the WorkForce maintenance box, and the T6710 question
T6711 (full part C13T671100) is the maintenance box for the WorkForce generation that includes the WF-3620, WF-3520, WF-7110, WF-7610 and WF-7710 families — notably, the same WF-3620/WF-3640 generation whose 0x97 code has a deep page on this site, which means owners of those machines meet both a documented box they can swap and a fatal family they cannot; keeping the two straight is half of owning one well. As with T04D1, the manual documents the swap as a user procedure, and a full or unrecognized T6711 stops printing until a working box is fitted. The map for this guide also named T6710, an earlier WorkForce Pro box sold widely by third parties for WP-series models. This site could not confirm T6710 in two Epson sources while preparing the guide, so it is carried as named-only in the unverified list — if your model's manual specifies it, the manual outranks this page, as it should. The standing rule for boxes is the manual's specification, not a marketplace compatibility list, because a box that physically fits but chips wrong is a stop message with extra steps.
Pad models versus box models: which one is yours, and why it decides everything
The single most useful question in this family is which absorber design your printer uses, because it flips the ending from service booking to parts shelf. Three reliable tells, all from Epson's own materials. The manual: its maintenance section either documents 'Replacing the Maintenance Box' as a user procedure (box) or states the ink pad is not user-serviceable (pads) — many manuals say both things about different parts, so read for the absorber specifically. The messages themselves: a machine that names a maintenance box in its stop message takes a box; a machine that speaks of the ink pad's service life and Epson Support has pads. The parts list: Epson's accessories for your model list a maintenance box part number (like T04D1 or T6711) if one exists. Owners go wrong by importing the other branch's folklore — hunting for a removable box on a pad model, or booking service for a box model whose fix sits in a drawer. Establish your branch first; every other section of this guide then applies cleanly, and you will also understand your machine's W-13-style messages (on some guide families the maintenance-box warnings ride the display-code table) in their correct branch.
The counter-reset question, answered in Epson's framing
Every waste-ink discussion arrives at the same question: can the counter be reset without replacing anything? Epson's documentation answer is silence — no owner reset is published for pads or for box chips, because in Epson's framing the counter is a gauge of a physical thing, and resetting a gauge does not empty an absorber. Third-party utilities that reset pad counters exist and are widely used; this site does not present them as Epson procedure, and the risk they carry is concrete rather than moral: a reset counter lets the printer keep pumping waste ink into pads that are actually saturated, and overflow inside the machine — ink on electronics, ink through the case seams — is the failure the stop exists to prevent, at a cost (a ruined printer, a stained desk) that dwarfs the service the reset avoided. The box branch has its own version: a chipped 'reset' or a refilled box asks the printer to trust capacity that is not there. Owners weighing the utilities should at least weigh them accurately: the saving is one service visit; the stake is the machine; and Epson's documented path — pads serviced, box replaced — restores real capacity, which is the thing the counter was counting.
Planning the ending: service economics on pad models
Because E-11 and the pad-end message arrive on a schedule set by your cleaning habits rather than your calendar, the practical skill is planning. On pad models, W-11 (or the 'nearing the end' sentence) is your planning window: the printer still works, and the service can be booked, priced and compared calmly. Get the quote with the model and the message quoted verbatim; ask whether the service includes the counter reset and a general clean (it should — the reset is part of the pad service in Epson's design); and on entry-level models, price replacement honestly alongside, because a pad service on a heavily used cheap printer can approach its successor's cost, and Epson's channel will not make that comparison for you. Consider also what the counter is telling you about your usage: if cleanings drove the count — chronic clogging, long idle periods with automatic maintenance, borderless work — the underlying habit follows you to the next machine or back from service, and the manual's guidance (print regularly, avoid unnecessary power cleaning, keep the printer powered so its own gentle maintenance runs instead of recovery cleanings) is the counter's long-term management.
Prevention: slowing the counter without starving the printer
Nothing stops the waste-ink counter — printing itself is metered — but its pace is partly yours. The big spends are cleaning operations: manual head cleanings and especially power cleanings pump real volume into the absorber, so run them for diagnosed clogs (a nozzle check showing gaps), not as a ritual, and never in repeated chains without printing between — Epson's own maintenance guidance warns that repeated cleaning without improvement is a service sign, not a persistence contest. Borderless printing oversprays by design and meters accordingly; use it for the work that needs it. Idle behaviour matters in the other direction: a printer left powered runs its own light maintenance and stays ready, while one switched off at the wall for weeks returns to a dried head and an expensive recovery cleaning — Epson's manuals consistently prefer the printer's own power management to the wall switch. None of this is counter gaming; it is simply not spending absorber capacity on avoidable cleanings, so the capacity you paid for is spent on printing.
Codes named in this guide's scope that remain unverified
Under this site's two-manufacturer-source rule, the following in-scope items are named with NO meaning attached. 0x9A: discussed above as a number Epson's public documentation never assigns to the waste-ink condition, whatever fix-it sites claim. T6710: an earlier WorkForce Pro maintenance-box part number circulating in third-party listings, not confirmed in two Epson sources during this guide's preparation (the confirmed sibling is T6711, C13T671100). Owners whose manuals specify either item should follow the manual — Epson's model documentation outranks this guide — but this page publishes no definition it could not verify. The verified spine of the family stands on Epson's own texts: W-11 and E-11 in the XP/L guide tables, the ink-pad prose messages in the EcoTank and WorkForce manuals and the WF-C4810 support FAQ, and the T04D1/T6711 box documentation. Everything else in this guide — the warning that invites early booking, the stop that admits no owner reset, the box swap that returns a machine to work in minutes — is documented in Epson's own words, and owners should hold the same standard when reading anywhere else: a waste-ink claim that cannot point to an Epson text is a claim about the internet, not about the printer on your desk.
Key takeaways
- W-11 is a booking reminder, not a stop: you can press to resume printing, but the counter keeps counting — schedule the pad service while the printer still works.
- Know your branch before anything else: pad models end at Epson service, box models end at a part swap (T04D1, T6711) you do yourself.
- Quote the machine's own words to support: the ink-pad sentence or the exact code from its own table, never a code borrowed from another family's page.
- A full maintenance box also blocks head cleaning and power cleaning — if cleanings refuse to run, check the box's state before blaming the head.
- The counter is spent mostly by cleanings: run head cleaning for a diagnosed clog shown by a nozzle check, not as a morning ritual.
Resetting the Epson printer
Epson documents no master reset for error codes, and the power cycle is the whole of its documented clearing step for the fatal families: turn the power off and on again, with any paper or protective material removed first (the XP/L guide tables word the E-01 remedy exactly that way, and the WorkForce/EcoTank manuals word the printer-error messages the same way). Warning codes clear by their own documented actions — a jam removed and the on-screen button pressed (W-01), a cartridge pressed down (W-12), the start button pressed to resume printing at W-11. The waste-ink condition is NOT cleared by any power cycle or owner reset: E-11 holds until Epson or an authorised provider replaces the pads, and on maintenance-box models the box's own messages clear when a genuine box is fitted. Restoring default settings from the setup menu resets settings, not error states, and Epson does not document it as an error remedy anywhere in these families.
Related guides
Facts on this page were checked against manufacturer documentation: support2.epson.net · download4.epson.biz · support2.epson.net · epson.com · epson.com · epson.com · download4.epson.biz