The panel is flashing a F70 problems what does this mean

Hello Carol;

My name is Peter. I am a retired field service appliance technician.

F70:

No communication between the electronic control board and the user interface control board assemblies.

Unplug the dryer. Check the wire harness connections between the main electronic control board and the user interface control board assemblies. If the connections are sound, have a technician diagnose the cause of the communication failure. The main electronic control board and/or the user interface control assemblies might need to be replaced.

The F70 is an internal control problem. It can be caused by a failed central control board or an interface problem. The way to determine which part is bad when the error occurs is as follows:

• If the error occurs when the machine is running then the problem is the interface.
• If the error occurs when the washer is not running the problem is the central control unit.

hello,

The code is an indication of a problem on the washer

F67 means the input voltage on the microprocessor is incorrect. Code F70 indicates a problem with the water temperature sensor circuit. F76 means the NTC temperature for the cold water valve is over the limits.

thanks.

Hi.

F70 is an electronic problem. I expained detains in the tip below.

The tip applies to whirpool built appliances like this Kenmore:

F70 and F71 are two logic board error codes that point at a communication error between the main log

Error code F70 means no communication is detected from the Central Control Unit (CCU) to the User Interface while F71 is the reverse; no communication detected from the User Interface to the Central Control Unit (CCU). This could simply mean a loose or poor connection between the two communicating boards.

Disconnect power to the washer prior to servicing to avoid the risk of electric shock.

Remove the three screws attaching the top panel to the rear of the washer then slide the panel rearward and lift it off the washer.

Disconnect the User Interface ribbon connector from the left side of the Central Control Unit (CCU) and clean the connector and terminals thoroughly. Reseat the connector several times to ensure a good connection between the Central Control Unit (CCU) and the User Interface.

It is highly recommended to clean and reseat every wiring harness connector from the Central Control Unit (CCU) to prevent the same problem in the near future.

Reconnect every wiring harness to the CCU and make sure all connectors are firmly seated. Slide the top panel back into position and secure it to the rear of the washer with the screws previously removed.

Let us know if the problem persists for further assistance. We will be happy to resolve your problem.

The F70 and F71 error codes on this model of washer indicates a communication problem between the user interface control board and the central control unit (main control board). These error codes can sometimes be caused by a power surge or glitch through the electrical lines. Try unplugging the washer to completely disconnect electrical power. Wait 1 minute and then plug the washer back in to the see if the fault code clears. If it does, then the washer may work normally.

If the code reappears, then you could have a wire harness connection problem, a failed user interface control board or a failed central control unit. I recommend calling a service technician to properly diagnose and repair this type of problem so that the correct component can be replaced.


Be sure your unit is plugged into a 3 prong grounded outlet as well.


F71 is a "heatbeat failure" which means that your front interface control board is shorted and will need to be replaced. it's actually fairly easy to replace and can definitely be done by yourself. To access the part, just pull the unit forward and remove the 3 screws coming in from the back of the top panel. Remove the top panel by pulling it back, up, and off. Then remove all the screws going into the top of the control panel. Remove the dispenser drawer and remove the screws coming in through the dispenser. Remove the screws coming from the inside of the dryer going forward into the control panel, then remove the control panel (it's just clipped in on the bottom. After that you can disconnect the wire harnesses to the front interface control board and replace that part.


Thanks for using FixYa - a 4 THUMBS rating is appreciated for answering your FREE question.

I have a Kenmore HE5 Steam: after a power failure last week, now when you turn the dryer on and push"start" the cycle stops emediately and flashes PF...

F70 means Blown Internal Fuse change the internal fuse and that should solve the problem if not you may have to change the output