11 Aug 2015, 13:41
We have had similar woes recently - ancient otterstat replaced with a brand new one, up to temp, fans didn't cut in. Shorted wiring, all fine. Another new stat bought, tested and fitted, haven't been up to temp yet but I've fitted a bypass switch just in case. The metal spring clip did seem to be exerting rather a lot of pressure on the bottom of the otterstat, but then I'd assumed that was necessary to keep a good seal on the rubber. The first 'new' one as removed seemed knackered. Is it too much pressure from the spring clip, or poor quality new components?
Med Venlig Hilsen