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Whirlpool ADG 8900 FD Dishwasher - Error F8 E1: Possible OWI Sensor Issue or Other Causes

kamillo14089 16911 15
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  • #1 17052156
    kamillo14089
    Level 8  
    Posts: 12
    Rate: 15
    Hello. I have a problem with the dishwasher Whirlpool ADG 8900 FD error F8 E1 after washing the day before it was all ok the second day the wife wanted to turn on the dishwasher and did not want to run. For a few seconds, you can hear that the pump is coming up later, the error problem described earlier. I searched the whole forum and the guys say it's an OWI sensor. My question is, is there anything else wrong with the sensor outside? Solenoid? I will add that the filters cleaned, the drain and drainage tube is not bent, the water connection is open. [/ Size]
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    #2 17052181
    rychomuch
    Level 29  
    Posts: 973
    Help: 142
    Rate: 692
    Hello.
    Wash the OVI sensor. Beware of hoses when setting the dishwasher.
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  • #3 17052198
    kamillo14089
    Level 8  
    Posts: 12
    Rate: 15
    Myłem czuj nic nie dało: /
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    #4 17052481
    rychomuch
    Level 29  
    Posts: 973
    Help: 142
    Rate: 692
    Reset done, water drain checked - unobstructed?
  • #5 17052575
    kamillo14089
    Level 8  
    Posts: 12
    Rate: 15
    Reset done, water drain checked - unobstructed. Regarding the reset, I was looking everywhere and could not take it when it was done. I do not have the operating manual. I have such a set of buttons. When it comes to the water drain, it is unobstructed, because as I poured water into the container where the filter and the OWI sensor are, it was pumped out. Also it was audible that the water was going to the sewerage.
    Whirlpool ADG 8900 FD Dishwasher - Error F8 E1: Possible OWI Sensor Issue or Other Causes Whirlpool ADG 8900 FD Dishwasher - Error F8 E1: Possible OWI Sensor Issue or Other Causes
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    #6 17053840
    bubu64
    Level 22  
    Posts: 590
    Help: 57
    Rate: 282
    There is nothing other than an OWI sensor to replace :)
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  • #7 17054258
    kamillo14089
    Level 8  
    Posts: 12
    Rate: 15
    I called the service where you said that this error not only means sensor replacement. It is also worth checking the pump having, but how? He said that he was repairing such dishwashers a lot and that when the sensor was broken, only the washer pump was broken. I can hear that he works, but I do not know it properly.
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    #8 17055693
    machnicki.krzysztof
    Level 12  
    Posts: 190
    Help: 12
    Rate: 78
    Check the reed sensors. One in the water jacket, the next one is under the salt tank.
  • #9 17056131
    kamillo14089
    Level 8  
    Posts: 12
    Rate: 15
    So how do you check these sensors?

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    #10 17056440
    zibi1971
    Home appliances specialist  
    Posts: 972
    Help: 262
    Rate: 1118
    Hello
    You will not check the OWI sensor, this service technician probably did not do these dishwashers for such an error. This is a water drain error but if the water is drained without a problem and cleaning the sensor does not help it is a sensor to replace and you will not jump over it.
  • #12 17060348
    kamillo14089
    Level 8  
    Posts: 12
    Rate: 15
    I made a reset as a colleague zhudomel gave the link and now I get an error F3 E4. When turning on the washing program, another F8 E1 error pops up.
  • #14 17060654
    kamillo14089
    Level 8  
    Posts: 12
    Rate: 15
    I did, but nothing helped.
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    #15 17060743
    zhudomel
    Home appliances specialist  
    Posts: 4993
    Help: 1280
    Rate: 3368
    rychomuch wrote:
    Do it like this: Here is the link: https://www.elektroda.pl/rtvforum/topic1072615.html
    kamillo14089 wrote:
    I did, but nothing helped.
    It's not the design and not the electronics. Probably without OWI replacement, you will not get around if you are 100% sure about the efficiency of the drainage system.
  • #16 17061628
    kamillo14089
    Level 8  
    Posts: 12
    Rate: 15
    I'm sure of the efficiency of the drainage system. Also, it probably was an OWI sensor, although it was not dirty at all. Probably something broke inside.
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Topic summary

✨ The Whirlpool ADG 8900 FD dishwasher is experiencing an F8 E1 error, which users suggest may be related to the OWI sensor. The original poster has confirmed that the filters are clean, and the drainage system is unobstructed. Responses indicate that cleaning the OWI sensor may help, but if the error persists, replacement of the sensor is likely necessary. Some users also recommend checking the pump and reed sensors located in the water jacket and under the salt tank. Despite attempts to reset the machine and verify drainage efficiency, the error continues, leading to the conclusion that the OWI sensor may be faulty.
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FAQ

TL;DR: Whirlpool ADG 8900 FD F8 E1 has 1 primary fix—OWI sensor replacement. "There is nothing other than an OWI sensor to replace." Diagnose drain and reset; if both check out, swap the OWI. [Elektroda, bubu64, post #17053840]

Why it matters: This FAQ helps Whirlpool ADG 8900 FD owners fix F8 E1/F3 E4 fast and avoid unnecessary part swaps.

Quick Facts

What does Whirlpool ADG 8900 FD error F8 E1 mean?

F8 E1 indicates a drain-related fault on this platform. If water evacuates and filters are clean, suspect the OWI sensor. As one expert noted, “This is a water drain error… cleaning the sensor does not help; replace it.” Replace the OWI once draining is verified. [Elektroda, zibi1971, post #17056440]

How do I reset the Whirlpool ADG 8900 FD after F8 E1?

Use the service reset referenced in the linked forum guide. Follow that procedure to clear stored faults, then retry a program. This reinitializes the control and sensor checks before deeper diagnosis. [Elektroda, zhudomel, post #17058832]

I cleaned the OWI sensor and it didn’t help—what next?

If F8 E1 persists and the drain path is clear, replace the OWI sensor. As a seasoned member put it, “There is nothing other than an OWI sensor to replace.” This resolves the fault when drainage has been proven good. [Elektroda, bubu64, post #17053840]

Can a kinked or blocked hose cause F8 E1 even if the pump runs?

Yes. A kinked or pinched hose can restrict flow and trigger F8 E1. Inspect the drain and supply hoses after moving the unit. Straighten bends and ensure free flow before replacing parts. [Elektroda, rychomuch, post #17052181]

How can I quickly test whether the drain path works?

Pour water into the sump near the filter and let the unit try to drain it. Listen for steady flow into the sewer and full evacuation. If it empties cleanly, the drain path and drain pump are likely fine. [Elektroda, kamillo14089, post #17052575]

What is the OWI sensor on this dishwasher?

The OWI (Optical Water Indicator) sits in the sump area near the filters and monitors water condition. When it fails, cleaning usually does not help. Replace the OWI to restore proper operation. [Elektroda, zibi1971, post #17056440]

Why did I get F3 E4 after reset, and F8 E1 returns on start?

That sequence was observed in this case: reset shows F3 E4, then starting brings back F8 E1. Treat F8 E1 as the active fault and continue OWI-focused checks. Two codes can appear sequentially during fault memory clearing. [Elektroda, kamillo14089, post #17060348]

Should I check reed sensors or the salt tank switch?

Yes. Verify the reed switch in the water jacket and the one under the salt tank. A stuck reed can misreport levels and stall cycles. Rule these out if you delay OWI replacement. [Elektroda, machnicki.krzysztof, post #17055693]

Could the circulation (wash) pump be the cause instead of the OWI?

Forum experience here points to the OWI when draining is confirmed. If added water drains and the pump runs, focus on the OWI first. Replace the OWI before considering the circulation pump. [Elektroda, bubu64, post #17053840]

Is the control board or wiring a likely cause for F8 E1?

No. The discussion indicates the design and electronics are not at fault for this symptom. “It’s not the design and not the electronics.” Prioritize hydraulic checks and the OWI sensor. [Elektroda, zhudomel, post #17060743]

How do I run a quick 3-step diagnosis before ordering parts?

Do this: 1. Clean filters and the OWI; check hoses for kinks. 2. Run the service reset from the linked guide. 3. If it drains and F8 E1 returns, replace the OWI sensor. This isolates the common failure fast. [Elektroda, zhudomel, post #17060743]

Where can I find the button sequence for service reset?

Use the forum guides linked by members in this thread. They outline entering service mode and performing the reset. Follow that guide to clear the fault memory. [Elektroda, rychomuch, post #17060497]

I hear the pump for a few seconds, then F8 E1—what does that indicate?

That pattern matches the reported symptom: the pump primes briefly, then the error appears. If drains are unobstructed, suspect a failed OWI. Replace the OWI after confirming hoses and filters are clear. [Elektroda, kamillo14089, post #17052156]
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