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i have the above pump fitted on my heating system but the display is now reading 1 and doesnt seem to be circulating the water. can anyone help??

hi i have got 20 trvs to fit in an office (about 40 rads on sealed system). i have today hired a pipe freezer for the first time thinking i could isolate one area at a time to save the whole building being cold. it seems though that the ice plug cannot hold the pressure in the system. i have...

hi i have just purchased and fitted an old scantronic 9450 panel for my shed with a couple of probems. i have conected one door sensor to ee and one to zone 2. all others are looped out but when i try to set the alarm the tamper fault lights up. can anybody give me a clue what might be...