Vokera Mynute 20e Boiler problems

[Willie mcgowan]

I have a vokera mynute 20e boiler, the pressure keeps dropping and initially we thought there was a leak. We checked under the floor boards and nothing. We then checked the thermistor and changed that. That kept it happy for a couple of weeks then the pressure started dropping again. We then found a leak in the heat exchanger, so we replaced that. However the pressure continued to drop and we had too keep topping it up. Now the boiler keeps resetting. Sometimes it will reset, sometimes it won't. Sometimes if we switch it off then it will reset sometimes it doesn't.
HELP!

 

[Slugbabydotcom]

Your pressure keeps dropping because you still have a leak.

Have you thought about checking the pressure relief pipe that runs out of the back ?

Thermistor has nothing to do with pressure dropping but your pressure relief valve and pressure vessel might.

When you set the pressure to 1 bar does it go right up to somewhere near the 3 bar mark?