Boiller's pressure is alway above 3 on the scale. I tryed draining the water and bring the pressure to 2. But when using HW or CH, pressure go back to above 3. Last week fault led (70) is started to flash as a fault on hotwater sencor. But now both hw and ch are working with pressure is above 3. What could be the fault and how to repair. Thanks.
BAXI COMBI 105E - pressure above 3
- Thread starter ripsy
- Start date
system was working ok with pressure at 3 for some months. but problem started with DHW again. filling loop isolator valve is ok. when turn the hot water tap, the system starting as normal. when the temperature goto 30/40 then fault light 70 flashing as hot water sensor fault. then after few seconds fault light stop flashing and system started to work again for few seconds until reached the temperature cut off again. Any suggestion for this fault please ? ??
Firstly drain water out of the system down to just over 1 Bar then see what happens.
Normally it should rise to at the most 2 Bar when rads are hot.
If it keeps rising to 3 or more after this then check out the FAQ's on checking the expansion vessel.
Normally it should rise to at the most 2 Bar when rads are hot.
If it keeps rising to 3 or more after this then check out the FAQ's on checking the expansion vessel.
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