Ariston stove top, flashing up with f4 code, what does this mean?

JENN AIR
'Newer Style' Range/Stove/Oven Fault Codes
Fault : F9
Condition: Door lock safety circuit on power relay board sensed
Replace power relay board
JENN AIR
Range/Stove/Oven Fault Codes
Fault:F9
Condition: Door latch supervisory
Check door lock circuit or replace clock assembly or ERC

Hey Kimberly, thank you for your inquiry!
I understand that the door on your Frigidaire range is locked and it will not start a self-clean cycle, it is also displaying an error code of "F91". The "F91" error code means that the door has exceeded maximum oven door unlock time. This means you could be experiencing an issue with your door latch, control panel, or a miscommunication within the range. To clear out a miscommunication within your range you need to disconnect power from it for at least ten minutes. I hope that this information is helpful to you. -Matt

Hello Heidi, thank you for your post!
From my understanding your Electrolux cooktop is displaying an error code of 8.8. The error code of 8.8 means there is a shift register issue on the middle touch board. This could a possible issue with the control board or the middle touch board. You may need to have a professional technician out to your home for proper diagnosis. We hope this information is helpful to your repair. -Matt

please add the details of make and model and resubmit

The Fault Code/s will show up in the appliance Display
F0 - No Alarm Signal
Replace Main Electronic Control
F1 - Door will not Lock
Check door lock. Is Door Lock Getting Power
F2 - Door will not Un-Lock
Check door lock. Is Door Lock Getting Power Supply? Check Control Thermostat
F3 - Self Test Error
Disconnect Appliance from Mains Supply, Wait 5 Minutes and then Reconnect to Mains Supply
F4 - Shorted or Open Circuit Oven Temperature Sensor
Replace Oven Temperature Sensor, Check Sensor Harness Connection between Sensor and Control Unit
F5 - Relay Contacts Failed - Sticking
Replace Main Electronic Control
F6 - Power Board Temperature Too High
Check Correctly Installed, Check Cooling Fan Assembly, Ducting and Airways
F7 - Incorrect Polarity - Mains Supply
Check Mains Connection - Live & Neutral round the wrong way
F8 - Power Supply to Interface Problem
Check Wiring Harness, Replace Main Electronic Control
F9 - Procesor is Auto Resetting
Disconnect Appliance from Mains Supply, Wait 5 Minutes and then Reconnect to Mains Supply

If you mean 'randomly HEAT', then I would suspect the control panel. There would be logic to detect the control touch and convert that into a signal to the controlling system that applies power. If the touch panel is faulty, it may signal for power intermittently.

The F4 error means that the oven temperature sensor is giving an open signal. Probably the oven temperature sensor needs to be replaced. However, sometimes, the wiring harness between the sensor and the control unit has a fault or the control unit (computer) is bad.

I hope this helps.

Cindy Wells

F means foreign object. In my case a dish towel covered about 10% of the touch panel, so it is really sensitive. In your case just see if anything is on top, or it may be that your stove is tricked into believing the front panel can't be used because something is covering it.

try pressing and holding the clock tab on the erc for 5 secs
this will usually cause the sab to flash 3-4 times and then retrun to normal operation mode

you have to hold the powerbutton for a few seconds, and the children security lock should come off