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Hi all
Our Baxi Duo-Tec 28H combi boiler threw an Error 119 at me yesterday. It's done this before, every few months, and as the error code means low pressure, I've simply had to repressurise and all has been well. Yesterday, however, the pressure gauge sat at 1bar when the error message occurred and repressurising, even modestly, caused the pressure gauge to move over about half an hour almost into the red, at which point the boiler stopped working showing Error 119 (even though this seemed to be an issue of over-pressure).
On the advice of our gas engineer, I then used the Pressure Relief Valve to let out some air, lower the pressure back to about 1.5bar, and get it working again. The first time, it worked for a few hours, then another Error 119 on low pressure (still at 1.5bar, which shouldn't be 'low'). There is no detectable leak and it's not sinking lower than 1.5bar. I went through this cycle of repressurising, then depressurising after half an hour, about three times. Each time it eventually stopped working with an Error 119 message.
Today the pressure is stable at 1.5bar, but it's stopped and stuck on Error 119. I can fill it up a little with water, to around 1.75-2bar, but this does nothing. If I then turn the Pressure Relief Valve it seems to release water not air, so I've stopped doing this. I can't get the boiler to start at all.
Does anyone have any ideas what might cause this, and what the solution might be?
Thanks for any pointers!
Best
K.
Our Baxi Duo-Tec 28H combi boiler threw an Error 119 at me yesterday. It's done this before, every few months, and as the error code means low pressure, I've simply had to repressurise and all has been well. Yesterday, however, the pressure gauge sat at 1bar when the error message occurred and repressurising, even modestly, caused the pressure gauge to move over about half an hour almost into the red, at which point the boiler stopped working showing Error 119 (even though this seemed to be an issue of over-pressure).
On the advice of our gas engineer, I then used the Pressure Relief Valve to let out some air, lower the pressure back to about 1.5bar, and get it working again. The first time, it worked for a few hours, then another Error 119 on low pressure (still at 1.5bar, which shouldn't be 'low'). There is no detectable leak and it's not sinking lower than 1.5bar. I went through this cycle of repressurising, then depressurising after half an hour, about three times. Each time it eventually stopped working with an Error 119 message.
Today the pressure is stable at 1.5bar, but it's stopped and stuck on Error 119. I can fill it up a little with water, to around 1.75-2bar, but this does nothing. If I then turn the Pressure Relief Valve it seems to release water not air, so I've stopped doing this. I can't get the boiler to start at all.
Does anyone have any ideas what might cause this, and what the solution might be?
Thanks for any pointers!
Best
K.