HAve a 5 year old FRIGIDARE dishwasher with no model number anywhere, not even on our paperwork. Unit has stopped 1/2 way through a cycle and the light,washing,drying, and clean lights a flashing

SOURCE: Dishwasher lights blinking

QuietGuard3: Clean light flashing 7 times? Press Heated Dry, press Normal Wash, then press Heated Dry again and press Normal Wash again (that's 4 button-presses) and that should fix it.

SOURCE: "Clean light" keeps blinking; dishwasher won't start new cycle

It says in the manual to check the heating element.

SOURCE: Clean light keeps blinking and I can't start a new cycle

That is a comon problem with that model. It is not sensing a temperature change in the water.

Push i believe it is heated dry and sani rinse going back and fourth between the two to clear the code and see if you can get it to complete a cycle. If it doesnt call sears and schedule service there is a service flash repair that should not cost you anything to repair the unit.

SOURCE: Kenmore dishwasher, model 665.170 344 01. "Clean" light keeps flashing and will not stop. Have tried everything in the manual and the light still will not stop flashing.

If the clean light flashes 7 times, pauses then repeats...

If the dishwasher doesn't sense a water temperature increase, it will stop working and lock the functions (clean light flashes 7 times, all buttons are non responsive).

To resolve this you will have to reset the console. Do this by closing the door and press these buttons in sequence...

-high temp wash
-heated dry
-high temp wash
-heated dry

...all the lights will turn on briefly and the machine will start a diagnostic cycle. You can press cancel or let the diagnostic cyle finish (1-2 minutes).
You should now be able to run the dishwasher as normal.

If the issue returns, you could have a problem with the heating circuit (ie. element, thermostat or wiring). It rarely happens but it could also be the door switch not engaging properly when the door is closed (slightly bend the door latch down making sure it doesn't hit the door when you close it).

SOURCE: Blinking Clean light in Whirpool dishwasher

Control is programmed to stop running and not allow any further cycles if it detects a water heating problem (no temperature increase detected in heated Main Wash on 3 consecutive cycles). Control blinks the Clean LED 7 times repeatedly and disables the Start/Resume key until cleared. Running Diagnostics clears the control and allows it to operate again. The water heating problem must be fixed or the control will stop running again. See potential causes below. Heater circuit problem: ■ Open in heater. ■ Open connection or component in heater circuit. ■ Faulty heater drive circuit on control. 1. Check operation of heater in Diagnostics cycle. 2. Unplug dishwasher or disconnect power. 3. Check resistance of heater and all components and connections in the water heating circuit or heat dry circuit.

dont forget to vote hope this helps thank you