Hi all, I have a Vaillant Turbomax 242 E combi boiler (black panel with green knobs) that is not producing hot water all of the time. Central heating works ok but when you turn the hot tap on you get cold water. Occasionally water is luke warm on a temp basis and if you turn the boiler off and on again sometimes the problem fixes itself. However, this has been going on over the weekend and today there ios no hot water at all. IA spoke to a retired plumber friend who told me to look at the microswitch which I did. When you turn the hot water on, you can see the microswitch move and the the boiler starts to turn itself on and then off again continually but no hot water is produced. Pressure level has dropped too. Both dials are set to 6. I have been reading other posts which all seem to say diverter. Any ideas? Thanks
Vaillant Turbomax 242E Problem
- Thread starter MrZee
- Start date
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check the diaphram in the water section (bottom of diverter ) first 
part no 01-0365
and if it has a black plastic water section be carefull they have a habit of cracking at the water inlet
part no 01-0365
and if it has a black plastic water section be carefull they have a habit of cracking at the water inlet
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