Heating only reaches 50 degrees

[Silvana]

Hi can anyone help as my heating engineer has come to a dead end. The heating on my boiler (Baxi combi 105E)only reaches 50 degrees which leaves the radiators warm but not working at full heat. The hot water is fine, it actually reaches the maximum temperature on the boiler of 70 degrees but the heating won’t go any higher than 50 degrees. I do not have radiator thermostats or a room thermostat and the pressure on the boiler is fine, as is the pump. The radiators have been bled and some of the radiators been taken off to check for sludge but they were clear so it doesn’t appear to need a powerflush, it’s just that the heating won’t go any higher on the boiler than 50 degrees (as per the display panel) when it should be able to reach 70 degrees. Has anyone got a suggestion as to what the problem can be as my heating engineer is at his wits end!


Thanks
Silvana
Posts: 1
Joined: Thu Nov 10, 2011 9:30 am
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[D_Hailsham]

Was the boiler OK last winter and the problem only appeared when you turned the heating this winter?

 

[Silvana]

No unfortunately it has been like this since I moved in 4 years ago but this year I decided to get it fixed.

 

[D_Hailsham]

1. Is the heating temperature dial (left) fully clockwise?

2. Does the boiler temperature reduce when you turn the heating temp anticlockwise?

3. Does the boiler temperature increase as you shut off the rads one by one (start with the smallest).

4. Does the house get up to temperature?