Quote:
Originally Posted by Stanleymad
Cold when only water is switched on but not all the time it has come hot like i say its 50-50 chance of either or, heating on the water did warm up but not hot as it should tho generally if left on for a while it does hotten up. The problem is mainly when the heating isnt on  |
The flow switch and/or diverter valve are faulty, when hh check it again, make sure the heating is off, the fault will be more evident, they should have something called a flow cup, this will test the water flow rate, some test the temperature too (mine does), If you check the manual, it will tell you what the expected flow rate and temperature rise should be, usually 10 litres per minute with a 35 degree rise from the cold water temperature. Ask them to prove to you that the flow and temp rates are consistent with the installation manual, if they cant, there is an obvious problem, If the engineer is Jill, dont say I told you, hehe.
