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Digital programmer resets to factory settings

Posted by John Paulley, on Fri 29 Sep 2023 03:39pm

What is a likely cause ? and a solution! It's a Timeguard TRT036N 7day Digital Programmer, their customer services suspect an electrical spike. A local heating engineer couldn't find an obvious problem and recommended replacing the controller. Timeguard sent a replacement under guarantee but it has happened 3 times this week......... Help !

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