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Thanks, but the hot water heating and van heating are combined so when you select van heating you also get water heating.
I'm fairly sure that the water is heating up but will not come out of the taps ........ just had a brainwave ( if I had one that is ) if I switch on the truma heater again leave for 30 mins,then open the dump valve ,I'll know then if the water coming out of the bottom of the van is hot , I'll try that later.
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As its a Hymer it almost certainly has microswitched taps controlling the pump therefore my suggestion is that the microswitch on the kitchen hot tap has failed or there is a broken wire somewhere nearby. Try opening the kitchen hot tap and then turning on the bathroom tap to activate the pump, if you get water out of both taps then the kitchen tap microswitch or its wiring are number one suspect.
D.
I know little about Truma heaters, but enough about hot water systems in general to tell you that you want to have the water flowing through cleanly before you ever turn it on. Otherwise, you can damage heaters quite severely, or, at least, activate protection systems that might require resetting or replacing.
Get the water flowing first before you even consider heating it.
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appears to be more than a microswitch problem to me....unlikely all three hot m/switches would go down together.
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