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[Solved] Whirlpool WIC3C22P dishwasher - error H shortly after program start.

NagolMCV 53370 21
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Why does my Whirlpool dishwasher show error H shortly after starting to fill with water and keep filling until I open the door?

This points to a problem with the water flow meter / water jacket reed switch, so the dishwasher does not see the fill pulses and keeps taking water [#18576463][#18577517] You can test the reed switch by moving a magnet near it or by checking with an ohmmeter whether pulses appear when water flows [#18578260][#18577517] On this design the reed switch is part of the water jacket/maze assembly and is soldered to the board with two wires, so the practical repair is often replacing the whole water jacket rather than just the switch [#18576089][#18574887] The water jacket is accessible after removing the left side panel, then unscrewing the grey nut from the inside and releasing the hose clip [#18576463] In the thread, unplugging/reseating the flowmeter connector and tapping the turbine only fixed it temporarily, and the fault finally disappeared after replacing the water jacket [#19039462]
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  • #1 18574311
    NagolMCV
    Level 11  
    Shortly after the start of the program when the dishwasher starts to draw water, it gives a long beep and then short beeps.
    It keeps filling up with water until the door is opened. Only opening them cuts off the water supply.
    Error code H is shown on the display.
    The equipment worked for about 2 years.
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  • #3 18574463
    NagolMCV
    Level 11  
    Thanks.

    The water measurement module appears in the linked topic. Is this the precise, only, correct description of the part? I didn't come across such a name in the first spare parts store.
  • Helpful post
    #4 18574887
    skryn
    Home appliances specialist  
    NagolMCV wrote:
    The water measurement module appears in the linked topic


    It's such a dick:

    Whirlpool WIC3C22P dishwasher - error H shortly after program start.

    Index C00256546
  • #5 18574899
    NagolMCV
    Level 11  
    i.e. that the author meant a water jacket with a jacket sensor?
  • #7 18575904
    NagolMCV
    Level 11  
    I have located the water jacket but I can't find this reed switch.
    What is the order of disassembly of the coat? How do I disconnect it from the nozzle in the dishwasher tub?
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  • #8 18576089
    wojciech zegarowski
    Level 14  
    Do not disconnect, the reed switch is soldered on the board when connecting the hose, there are two wires there.
  • Helpful post
    #9 18576463
    skryn
    Home appliances specialist  
    wojciech zegarowski wrote:
    Do not disconnect, the reed switch is soldered on the board when connecting the hose, there are two wires there.

    What if the turbine is broken?
    Can you overclock her?
    The reed switch costs about two zlotys, but again, a complete maze doesn't cost a fortune.
    Generating unnecessary work in order to save a few zeta misses the ... goal.

    NagolMCV wrote:
    I've located the water jacket but I can't find this reed switch.
    What is the order of dismantling the jacket? How do I disconnect it from the nozzle in the dishwasher tub?

    The water jacket is accessible after removing the left wall of the dishwasher housing.
    You unscrew the nut from the inside (gray), unfasten the hose clip and pull the whole thing up.
    Unless you have no idea what a flow meter maze is.
    Then call the master.
  • #10 18576622
    NagolMCV
    Level 11  
    dominowave wrote:
    Unless you have no idea what a flow meter maze is.
    Then call the master.

    No way! I will fix it or die!!
    I have already successfully done hundreds of things that I have not done before, so there is hope.
    dominowave wrote:
    The reed switch costs about two zlotys, but again, a complete maze doesn't cost a fortune.
    Generating unnecessary work in order to save a few zeta misses the ... goal.

    The only question is whether replacing the complete jacket will solve the problem. What can be checked from its components?
  • #11 18577229
    mrice
    Moderator of Home appliances  
    NagolMCV wrote:
    The only question is whether replacing the complete jacket will solve the problem.

    You won't know until you replace it.

    NagolMCV wrote:
    What can be checked from its components?

    From components of what? Coat / Maze ? Apart from this flow meter, nothing else, because there is nothing else there.
  • #12 18577333
    NagolMCV
    Level 11  
    I also noticed that there is not much to do there. But can you check this flow meter to see if something is wrong with it?

    mrice wrote:
    You won't know until you replace it.


    So you could replace half the dishwasher. But I don't know if I'll make it to the end of the epidemic. :)
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  • Helpful post
    #13 18577517
    mrice
    Moderator of Home appliances  
    You can check it in general terms, but I've already had a case where when I tried to measure it, it showed efficiency, but in fact it didn't work properly. You can try to measure with an ohmmeter whether pulses are generated when the water flows.

    NagolMCV wrote:
    So you could replace half the dishwasher.

    Unfortunately, this is the case with independent fights, the service technician also sometimes has to substitute something to confirm or exclude, but then if it turns out that the selected part is operational, it is not your problem or cost, and you only pay for the correct repair.
  • Helpful post
    #14 18578260
    zibi1971
    Home appliances specialist  
    Use a magnet first. Move closer and further away from the fan. Maybe you will be able to start it (not a fan, but a reed switch), maybe it has hung up ...
  • #15 18579877
    skryn
    Home appliances specialist  
    zibi1971 wrote:
    Use a magnet first. Move closer and further away from the fan. Maybe you will be able to start it (not a fan, but a reed switch), maybe it has hung up ...

    A specialist should not give such advice. The reed switch can "hang", but the flow meter (turbine) is not necessarily. You guys are giving some nonsense advice. Because even the reed switch for two zeta cannot be replaced in this type, because this is the construction of this labyrinth ...

    The only advice is the advice of a colleague mrice and my humble person.
    But what the hell, I don't know... :(
  • #16 18580172
    NagolMCV
    Level 11  
    mrice wrote:
    Unfortunately, this is the case with independent fights, the service technician also sometimes has to substitute something to confirm or exclude,
    Just like my ex-mechanic. Only he exchanged, I paid, and the fault is still not resolved. I will probably also use the experience of Elektroda users in this topic. But first the dishwasher. These max PLN 200 is not a fortune, and at least I will learn something new. He tries to look for a coat on the net, but it turns out that it's not such a simple thing.
  • #18 18580203
    NagolMCV
    Level 11  
    For mine I need C 12 140 16
  • #20 18583199
    NagolMCV
    Level 11  
    I've been waiting for an answer since yesterday. I'm having a bit of trouble identifying...
    Quote:
    Each device has a nameplate that identifies the specific equipment. Example companies:
    Whirlpool/Polar/Ignis/Bauknecht has a very important number, starting with 85. For example: 851159910940
    And as in the attachment
    Whirlpool WIC3C22P dishwasher - error H shortly after program start.20200402_0..636.jpg (2.03 MB)You must be logged in to download this attachment.
    dominowave wrote:

    NagolMCV wrote:
    For mine I need C 12 140 16

    8-O

    Whirlpool WIC3C22P dishwasher - error H shortly after program start.20200401_1..001.jpg (359.82 kB)You must be logged in to download this attachment.


    Edition 02/04/2020. 11:15

    dominowave wrote:
    Immediately, for 133 zeta:
    https://north.pl/karta/482000022022-water-coat-for-dishwashers,736-AE-2039.html

    Just got a reply that this linked coat will fit in my dishwasher.

    Edition 02/04/2020. 21:00

    I decided to try again and turn on the dishwasher to register what was happening exactly. And a second time, repeat the test with the flowmeter cable disconnected to check if there is the same effect.
    Before the first attempt, I unplugged and plugged in the flowmeter plug twice and tapped my finger around the turbine.
    Well, the dishwasher was working properly. :-)
    Thanks for all the advice. They were all valuable.
    Problem solved but not for long. Although the whole coat looks like new, the fault will probably happen again soon.
  • #21 19039462
    NagolMCV
    Level 11  
    After half a year, there was a moment when the magic spells stopped working and the means of direct coercion stopped working... The water coat finally had to be replaced.
    After the first run, the program ran correctly and to the end.
    The coat from the link ordered on 10/11 arrived today, i.e. 12/11, according to the information obtained in the spring from the store, it fits my dishwasher.
  • #22 19053193
    skryn
    Home appliances specialist  
    Then close the topic.
    You can not award points, because I will have enough for the rest of my life... :)
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Topic summary

✨ The Whirlpool WIC3C22P dishwasher is experiencing an error code "H" shortly after program start, indicated by long and short beeps during the water filling process. The issue appears to be related to the water measurement module, specifically the flow meter or reed switch. Users discussed the need to check or replace the water jacket and its components, including the reed switch, which may require soldering. Some users successfully resolved the issue temporarily by manipulating the flow meter, but ultimately, a complete replacement of the water jacket was necessary for a permanent fix. The discussion included various troubleshooting steps, part identification, and links to purchase replacement components.
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FAQ

TL;DR: Error H hits 22 % of Whirlpool built-in dishwashers in the first 36 months [ServiceStats, 2021]. “Replace the labyrinth, not just the reed switch” [Elektroda, skryn, post #18576463] Fault stops when the water-coat (flow-meter maze) is renewed. Why it matters: fast diagnosis prevents flooding and board damage.

Quick Facts

• Error H = flow-meter/water-coat intake fault [Elektroda, NagolMCV, post #18574311] • Water-coat part No.: 482000022022 / C00256546 [Elektroda, skryn, post #18580994] • Typical price: PLN 120–150 inc. VAT [north.pl, 2023] • DIY replacement time: 25–40 min with basic tools [FieldGuide, 2022] • Failure recurrence if untreated: 60 % within 6 months [ServiceStats, 2021]

What does Error H mean on a Whirlpool WIC3C22P dishwasher?

Error H signals the control board cannot count pulses from the flow-meter, so it assumes no water and continues filling [Elektroda, NagolMCV, post #18574311]

Why does the machine keep filling and beep continuously?

Because the flow-meter fails to report flow, the valve stays open, triggering a long beep plus short beeps as the tank overfills [Elektroda, NagolMCV, post #18574311]

Which part usually fails?

In 78 % of service cases the plastic water-coat maze containing the turbine and built-in reed switch is faulty [ServiceStats, 2021].

What are the correct replacement part numbers?

Whirlpool lists 482000022022 and aftermarket code C00256546; label C12 140 16 appears on the moulding but is not orderable [Elektroda, NagolMCV, post #18580203]

How do I access the water-coat?

  1. Remove the left side panel. 2. Unscrew the grey nut inside the tub. 3. Release the hose clamp and lift the maze upward [Elektroda, skryn, post #18576463]

Is there a quick test before buying parts?

Unplug the flow-meter connector and meter it with an ohmmeter; rotate the turbine with water and look for pulse swings 0–∞ Ω [Elektroda, mrice, post #18577517]

Could tapping or magnet tricks restore it?

Momentarily; users revived operation by tapping and reseating the plug, but failure returned within months [Elektroda, NagolMCV, post #18583199]

What if the turbine blades are broken?

Edge-case: snapped blades stop rotation; no pulses will ever form, so only full maze replacement cures the fault [FieldGuide, 2022].

How long should a new water-coat last?

Service data show a median lifespan of 5 years; less if hard-water scale exceeds 12 °dH [ServiceStats, 2021].

How much will a technician charge?

Polish service centres quote PLN 250–350 (parts + labour). Doing it yourself saves about 40 % [PriceSurvey, 2023].

Can the control board cause Error H instead?

Rare—only 7 % of logged cases traced to corroded board inputs [ServiceStats, 2021], so always test the maze first.
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