Truma water heater problems

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ScreenName1612135521 Forum Participant Posts: 4
edited April 2013 in Motorhomes #1

I have a Truma ultra store rapid water heater, the last two times I have been away I have had no hot water! Everything pumps through ok, but the water is cold. Any ideas? Is it something simple like changing the 1.6a fuse? Thank you.