Honeywell Y Plan diverter easy TESTING sequence
Honeywell Y Plan mid position diverter valve has been with us for over 40 years, so why do installers still get it wrong? This Video will show how it should be done Our “Special Offer” is order both books, order value £40.00 include. P&P no vat UK Post Code only. Order the books & CO2 chart from https://www.mrcombi.com/shop/ Our APPs are all one price £4.99 no vat Apple iOS download: https://apps.apple.com/gb/developer/m... Google Play download: https://play.google.com/store/search?... BOOKS: https://www.mrcombi.com/shop/

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