Discuss Horstmann Programmer. in the UK Electrical Forum area at ElectriciansForums.net

telectrix

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as title. got a customer with a failed Horstmann 7 hot water programmer,, as in just the hot water, not central heating. programme it for off peak on the bottom element and with a manual boost for daytime on the top element. can't seem to find anywhere, all i get is water/ch programmers.
 
I've never pulled a Horstmann apart but would imagine it's along similar lines to the Greenbrook. It uses a capacitor as voltage dropper. Last one I repaired had a 474k (470nF) X2 capacitor that when I check was down to 197nF. Replaced the cap and all was well again. If you want me to strip it and see if I can repair then PM me. If you do replace the Horstmann PM mail me and I'll pay for the postage for you to send it to me so that I can play around with it.
 

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