Question about Bosch Nexxt Premium WFMC6400UC Front Load Washer

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I get a check water tap error 2 to 4 times a load

On my Bosch WFMC6400 i get a "check water tap" message multiple times per load, hot or cold. I push the start button and the washer starts. I cleaned out the hoses, the cold was clean and the hot had a little sediment in it. Should I replace the valves or look somewhere else?

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I have this problem. This code is due to restriction of water flow. In my case, we have sand in our water, and I have installed a filter between the water line and the washer. When it gets clogged, the flow is restricted and the Check Water Tap message appears. Your washer has filters on the back of the washer itself that may be clogged and need cleaning (which is why I installed the water filter between the washer & water line to prevent it from getting into the washer filter). Your washer manual shows you how to check/clean them. Also, you may have low water pressure during summer months due to lawn watering in your area that could cause this lower water pressure.

Posted on Jul 01, 2009

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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1 Answer

It often flashes ea or af and doesnt want to light


Before calling service technician, open following links for troubleshoot resources including common error codes, Bosch contact information, link to service manuals, and possible product manual
http://waterheatertimer.org/Troubleshoot-Bosch-Tankless-water-heater.html
http://www.boschhotwater.com/HelpfulResources/TechnicalSupport/BoschAquaStarModels/2400ESTechSupport/Troubleshooting/tabid/1295/Default.aspx

Call Bosch 800-642-3111
Multiple error codes can mean PC board failure.
AF might be A9, but not sure.
EA is 'no flame ionization detected with water flow'
  1. Verify that all manual gas shut off valves are open.
  2. Check gas type.
  3. Reset error code and open a water tap to cycle the heater in an effort to purge air on new installations. Cycling hot water tap on and off multiple times may be necessary. If heater still faults with EA error code, have a licensed gas technician properly purge air out of the gas line leading to the water heater.
  4. Check three wire connections to ignition group on the lower front of the heat exchanger are secure.
  5. Check gas pressure.
  6. Check venting specifications are met. Improper venting may cause premature failure of the flame sensor rod.
  7. Check that the minimum power fan speed has been adjusted to the proper value.
  8. Observe inside the viewing window of the heat exchanger when a hot water tap is opened. Sparking should be followed by a steady blue flame. If flame is unstable or yellow with proper gas pressure.

Aug 11, 2011 | Bosch AquaStar 2400ES-NG

1 Answer

What does "PE" error message


Hi from retired Englishman in SW France,
LG's 'PE' refers to '(water) Pressure Error'
If you have checked that the hot and cold water taps are turned on fully and the hoses are not kinked or squashed at the back, it is worth while checking both the hot and cold water inlet filters. Turn the taps off and remove both hoses at the washer end. Inside each inlet port there is normally a little filter which should just slide out. Clean if necessary and replace each one and the hoses. If after turning the taps back on there is no improvement, the problem is symptomatic of a malfunctioning hot or cold water control valve. Sorry but it needs a service call and a check that it isn't the control PCB ;-0(
If this has assisted you please consider a 4 thumbs up for the rating.
Thanks and good luck,
John C

Jul 18, 2011 | LG WD-16115FD Front Load Washer

1 Answer

Water takes 30 sec to cover 10m from heater to tap


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1/2" pipe has inside diameter of .54" and holds 1.2 gallons per 100 feet
10 meters is 32 feet and holds .4 gallons
Average faucet puts out 2 gallons per minute, so 30 seconds you should get 1 gallon of water.
Put a bucket under faucet and check amount of water flow.

Assuming you draw just hot water from the faucet, then 30 seconds is slow for receiving hot water.
If you have single-handle faucet and raise handle straight up in middle, then you are drawing half hot and half cold, so it would take 30 seconds for hot to arrive.

If hot water is slow, the problem might be crossover.
http://waterheatertimer.org/Crossover.html
or low water pressure due to clog in water line
http://waterheatertimer.org/Low-hot-water-pressure.html
Other problems could include clogged water filter, clogged water softener, defective pressure valve, and low water pressure.

Sources:
http://waterheatertimer.org/Troubleshoot-Bosch-Tankless-water-heater.html
http://waterheatertimer.org/Water-heater-recirculation-system.html

Jul 10, 2011 | Bosch Outdoor Gas Tankless Water Heater...

1 Answer

Bosch GWH 715 ES flashing EA code. This unit was working fine for over a year so I am assuming gas pressure can't be the problem? The spark is flashing and the unit lights for about 2 seconds then...


http://www.digelair.net/pdfs/TECHLIT/BOSCH/MANUALS/Bosch-ProTankless_AM.pdf
http://www.bosch-climate.us/files/201009031238250.GWH715ES_English_12.2008.pdf

Above are the manuals required to diagnose and service your error code.

EA: No flame ionization detected with water flow.
Verify that all manual gas shut off valves are open. Check gas type. Reset error code and open a water tap to cycle the heater in an effort to purge air on new installations. Cycling hot water tap on and off multiple times may be necessary. If heater still faults with EA error code, have a licensed gas technician properly purge air out of the gas line leading to the water heater. Check three wire connections to ignition group on the lower front of the heat exchanger are secure. Check gas pressure. Check venting specifications are met. Improper venting may cause premature failure of the flame sensor rod. Check that the minimum power fan speed has been adjusted to the proper value. Observe inside the viewing window of the heat exchanger when a hot water tap is opened. Sparking should be followed by a steady blue flame. If flame is unstable or yellow with proper gas pressure.

Jul 07, 2011 | Bosch & Tankless LP Hot Water Heater

1 Answer

Water comes into dishwasher cold. why???


Hello,

Welcome to FixYa.

Have you insured the unit is connected to a hot water supply line ? The water will not heat until it start's to circulate and activates the "flow switch" in the Bosch dishwashers.

If it is connected to a hot water supply, try running the hot water at your sink taps before turning on the dishwasher. If you still do not have hot water, check your hot water heater or supply.

If it is indeed connected to a cold water supply it will work, just be prepared for very long wash cycles since the Bosch machines will heat the water at a rate of 2F per minute...it could take a long time to reach 155F.

Let me know what you find out and I'll try to assist you in any manner I can going forward.

Regards,

Macmarkus :)

Jan 28, 2011 | Bosch 23 in. SHU33A Built-In Dishwasher

1 Answer

Bosh error code E02


Hi. I had the same problem with my Bosch washing machine and called Bosch...was told the same thing...$99.00 for service call. I managed to fix my problem by doing the following:
  • Removed hot & cold water supply hoses.
  • Took filter screens out of both hoses.
  • Removed filter from cold inlet on back of washing machine. I noticed some oily buildup on both of the cold screens so opted to not put any of them back in.
  • Then I put hot & cold water supplies back on the wall hookup, but crossed the lines where they came into the back of the machine intentionally so that the hot water line fed into the cold side of the washing machine and vice versa.
  • Then I ran a couple loads on "cold" which was actually hot water coming in to the machine.
The reason I did this was that I figured there must be some more waxy buildup inside the machine in the cold lines and hoped the hot water would melt it like when you rinse a greasy pan under hot water. IT WORKED!!! I hope this helps you.

Sep 29, 2008 | Bosch Nexxt Premium WFMC6400UC Front Load...

1 Answer

Error code


hi sir one of these problem will be there 1 - No cold fill. Check that the taps are on or if the drain hoses are kinked. 
2 - No hot fill.The ambient temperature is likely to be below freezing possibly due to the pipes being frozen. Also check that the taps are on or if the drain hoses are kinked. 
3 - No mixed fill. It is likely that the water is not turned on at the taps. 
4 - Check the water supply, inlet valve and hot and cold hose connections. 
4 - A fault with the water heating has occurred. 
5 - Water is not being pumped out and a flood condition could occur. Check that the drainage hose is raised to the recommended minimum height and that the pipe is not blocked. 
6 - Extremely high water level Disconnect or turn off the water supply and ensure that the water level does not rise any more. Then book a service engineer. 
7 - Door not closed properly. Close door firmly at the 3 o'clock position. 
E20/1 - The thermistor resistance has drifted or the temperature scanning sequence is incorrect. The ambient temperature could be below freezing. 
thank u............

Sep 11, 2008 | Bosch Nexxt Premium WFMC6400UC Front Load...

1 Answer

Error message: water tap closed .


check water inlet valve clean of rubbish from water inlet hose
otherwise water inlet valve maybe faulty

Dec 08, 2007 | Bosch Axxis WFL 2060 Front Load Washer

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