Hi – machine only works for 1/2 tumbles then trips the heater toc. once re-set just does the same again. I’ve checked all pipes , pump , heater and stat’s and all appear ok. I’ve been twice to see it and both times there has been a bit of water in the rear heater panel. There is a heat limiter by the heater which reads .283 is this right?? or ANY IDEA’S brett