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I have a Whirlpool WFW 9400SW02 washer. It won't start. After pushing the power button, there are only three "beeps". The previous expert suggested me to replace the door switch, I did and the problem remains the same. This morning, I run the diagnostic and get C:00. Finally, it gave F70.

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  • chriszou1965 Mar 26, 2011

    Please answer my question directly. This is a washer not a dryer.

  • chriszou1965 Mar 26, 2011

    Shane,

    If I disconnect the three wire cable (the bottom one on the left side when look ingfrom the top), the panel lights will light up as everything is back to normal. However, when I press on "Start", I have three beeps. Does this tell you something?

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Hi,

The F70 error code is indicating a loss of communication between the Central Control Unit (CCU) and the user's interface board on the right hand side of the console.
Follow the procedure mentioned below:
1. Check for continuity of the user interface harness
2. Check the wire harness connections at the user interface board and the Central Control Unit.
3. If the unit will run and rotate before the "F70" displays usually indicate the user interface board will need to be replaced.
4. If the unit will not run and rotate usually indicates the Central Control Unit will need to be replaced.
I recommend calling a service technician to repair your washer.

Hope this helps.

Shane

Posted on Mar 26, 2011

  • Shane Mar 26, 2011

    It indicates there is some problem in internal wiring .I recommend checking the wiring harness connections on the door latch assembly and on the CCU. If the connections are okay, then you will likely need to replace the wiring harness.

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  • Contributor
  • 391 Answers

FIRST AND FOREMOST, I want to state that the following is completely my opinion to which I have arrived after troubleshooting this problem for the last 4-5 hours.

F70 = Overheating sensed causing dryer stop until temperature reaches(drops) below set level - determined by manufacturer

Can be caused by different contributing factors;

1. poor airflow

2. blocked air flow screen inside tumbler

3. clogged lint screen

4. slow tumbler (low revolutions)

NOTE;

Ironically, the fourth factor has been lurking behind the popular discussions on this problem that has exhibited itself on both the whirlpool and kenmore products with the main triage to have included inspection of the electrical connections made by the installer.

These electrical connections not followed properly with accordance to '4prong' NEMA 14-30R (30amp, 2-phase circuit outlet) with separate ground and neutral posts, as exhibited in the standard dryer installation manual, will cause your tumbler to run slow. Hence, the 4th factor which caused the 'F70' code stops the dryer from operating.

Now, you have corrected the wiring as necessary and eagerly place some stuff's in there and all seems well. But as soon as you place something large and wet (HEAVY/BUNDLE), you get the error code again, Geeeezzzzz, you thought you had it!

Okay, this is what you need to do;

1. make sure your air flow is adequate by really cleaning the duct (I stuck my hand through the wall duct and scraped off old hard lint that can collect humidity & even cut my finger). Also make sure your vent hose does not have any unnecessary elbows or squiggles in it ( I had an elbow/pan type and it is not good as the heat seems to reflect too much ). KEEP IT AS SHORT AS POSSIBLE - I KNOW IT'S HARD, BUT IT IS NECESSARY.

2. Refrain from using too many softener sheets as they can & will restrict the air flow screen inside the tumbler.

3. Make sure your lint screen is clean - wash it periodically as lint particles collect moisture and this in turn raised humidity.

4. Once you have verified your electrical connections as stated earlier in this posting, run a normal cycle with towels or something of the like so as to reset the sensors in the dryer.

What my wife keeps doing is to put a back in after it's Heavy Buncle cycle (because it's not fluffy) and the dryer start up with high heat and then senses over heat and then SHE GET'S THE FAMOUS F70. In cases like this, use the damp dry selection and that works great - or better yet just use the timed dry selection with low heat.

We just have to understand that someone sat down and figured out what and how they wanted to program the computer that determines how this particular machine is going to react.

THE MAIN THING TO REMEMBER IS THAT 'F70' SEEMS TO BE THERE TO PROTECT AGAINST OVERHEATING WHICH IN TURN CAN TURN TO A FIRE HAZARD


hope this helps ei5glb

Posted on Mar 26, 2011

  • this is a scam website Mar 26, 2011

    Hello from what you are saying now



    he F70 error apparently is a design flaw that happens to many of these machines in this series. It has something to do with a failure of the components to communicate with each other. The main circuit board most likely needs to be replaced. The user interface is simply a touchpad control. When first troubleshooting, I felt a communication error normally causes this but I too replaced the unseinterface and has to replace the control. Good Luck! Not sure if you can return. Most often you cannot.....it is an electronic part. If you need further assistance, feel free to visit website at http://www.affordableappliance.com

  • this is a scam website Mar 26, 2011

    when you removed the 3wire you were only breaking a circuit but as you done so you removed the current from the circuit board as a result you received a warning with 3 beeps as i stated above this is an electronic fault and the circuit board will need to be replaced it would be wise to chuck it out and buy a new one goodluck to you

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