You would need to unplug the appliance and take the side panels off.
Unplug the heater and test it with a multimeter to see if it's open circuit.
If it is, you need to first replace the heater and try again.
If it's ok, the likely fault is the main control board in the facia panel of the appliance.
Check the heater, check the wiring to the heater. See what you find.
Hope this is of some help
Let me know how it goes or if you need more help
YOU DID NOT READ MY QUESTION I SAID I HAD REPLACED THE HEATER AND IT WAS OK ALSO I SAID THE MACHINE WAS SWITCHING ON AND AFTER 1 MINUTE THE FOLLOWING LIGHTS WERE FLASHING.. RED RINSE AID. FAST AND DRY ///AND DELICATE///,MACHINE RAN AND THEN PAUSED MY QUESTION WHAT DO I DO NEXT..