Question about Water Water Heaters
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Posted on Jan 02, 2017
vailant boilers are one of the best on the market and should last you more than 6 years depending on installation and servicing.
the engineer you had should not have replaced the diverter valve if the boiler was firing up when the taps are opened. if you was getting luke warm water with the boiler alight it is a classic symptom of a blocked plate heat exchanger on the central heating side.
a new heat exchanger can cost around £100 depending on the age and model of the boiler.alteranatively it could be descaled but may clogg again. it would be a good ideal to fit a magna clean filter on the system to help prevent further debris if you have a dirty system .if you don't trust your engineer i suggest you ask another. find out if he is registered first and don't pay until you are satisfied with the work. if you are asking the same engineer back try and get a discount off the work as he has failed to rectifiy the original fault and fitted the wrong part due to wrong diagnostics. if he is registered you can complain to the governing body ie corgi or gas safe register.
Posted on Mar 30, 2009
To avoid having a flame in the absence of water flow, the device you mentioned, 'diaphragm,' detects if adequate water is flowing to avoid a dangerous condition. Check on the housing of it for an adjustment screw; it may have a dot of sealant on it since these normally can be adjusted. It sounds as if it is misjudging the quantity of water flowing through and causing the annoying cycling.
Posted on Dec 17, 2010
Symptoms sound like crossover might be part of problem:
Crossover is when cold water enters hot water line due to faulty plumbing part like check valve, mixing valve, or bad faucet cartridge.
Posted on Jun 15, 2011
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