I have an Isar HE30 - I know, never mind!!
Before Xmas, it sprung a leak inside and at the pipe outside when the pressure got high. Had an heating engineer in, who replaced 'bits/valves' in the boiler and now no more leaks. When he tested before he left, he noticed that the pressure crept up to almost 3 bar, so suggested changing the pressure release something or other. Left to get parts, but since then the pressure has behaved - well sort of.... I have a new problem which is even baffling the engineer (he now didn't feel the need to change the pressure release thingy):
The boiler loses pressure overnight and half way through the day. When I get up in the morning, although the central heating should have switched on, it hasn't because the pressure is zero. I have no leaks anywhere. To get my central heating on, I run the hot tap and then the central heating kicks in and the pressure climbs to about just under 2 bar. From then on it works perfectly until half way through the day, the pressure will fall again, so I turn on the hot tap and then the pressure builds again.
Most bizarre - anyone any ideas?
Before Xmas, it sprung a leak inside and at the pipe outside when the pressure got high. Had an heating engineer in, who replaced 'bits/valves' in the boiler and now no more leaks. When he tested before he left, he noticed that the pressure crept up to almost 3 bar, so suggested changing the pressure release something or other. Left to get parts, but since then the pressure has behaved - well sort of.... I have a new problem which is even baffling the engineer (he now didn't feel the need to change the pressure release thingy):
The boiler loses pressure overnight and half way through the day. When I get up in the morning, although the central heating should have switched on, it hasn't because the pressure is zero. I have no leaks anywhere. To get my central heating on, I run the hot tap and then the central heating kicks in and the pressure climbs to about just under 2 bar. From then on it works perfectly until half way through the day, the pressure will fall again, so I turn on the hot tap and then the pressure builds again.
Most bizarre - anyone any ideas?