Vokera Excell 80E overheat problem
 

Hello! Please can someone help me out with this problem. I have a
Vokera Excell 80E boiler which works fine most of the time. The
problem is that when I have a shower it will overheat and lock out
meaning I have no hot water. It eventually resets itself and starts
working again

This problem occurs most times that I use the shower. Sometimes I can
be in the shower for 10 minutes and it will be fine, other times it
will overheat after a few minutes.

It happens regardless of whether the central heating is on or off at
the time. The amount of time it takes to overheat varies but I'm sure
if I ran my shower long enough it would overheat every time. I always
check the pressure of the system and it is always between 1 and 2 bar.
The boiler has a temperature gauge on the front but this doesn't seem
to work. The water temperature is not set very high so I do not think
that is the problem. The boiler has never overheated due to the
central heating being on, only hot water when I'm in the shower.

Any ideas?

Vokera Excell 80E overheat problem