Question

Hi Tom, I have just brought a secondhand van and the truma s3002 ultra heat would not work on 240v as was not getting hot. I have replaced the temp limiter 175 degree one and now the heater works but only for about 30 seconds and then trips the electric's out on the breaker any ideas?

Answer

There is a possibility it could be a short circuit on the element or maybe trapped wires, It would need to be checked over by a dealer to locate the fault.