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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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Boiler short cycling
Our old Valliant Turbomax is humming away with the central heating
light on, and every 5 mins or so firing up for a few secs and then firing down, but both heating and hot water are turned off at the controller. I've noticed that the boiler pressure is over 2.5 bar. It's an unvented system with a hot water tank and (blue) expansion vessel. Am I right to suspect the expansion vessel - it either is failing or needs recharging. I guess not a DIY job. |
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