disconnect from mains first always. unscrew back panel ( there could be a lot of screws) and look at element. you can usually see if it's faulty. alternatively, clean off lintand carefully plug back in with cover off to see if element heats up(it will glow within seconds of you starting a high heat cycle.). if element is ok check air flow. if that's fine it's probably control module
white goods engineer, August 2009