Hot water in cold water pipes?

Surfer
Surfer Club Member Posts: 1,303
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edited April 2014 in Caravans #1

We have the ALDE heating system with an in board tank.  We seem to have two different problems with our water system.  We prime the system and after awhile if you touch the cold water pipes near the boiler, they are very warm to the touch.  If you turn on
the hot water tap, it coughs and splutters as if you are priming the system and you get is cold water?

can any one help as we are stuck on site with no water and no hot water?  Thanks.