Hopefully this is the last problem I find with my central heating system! The programmer right-hand most digit sometimes flashes and sometimes goes from the normal number in the time to a letter E then changes back again. The instructions are brief to say the least and don't give many clues. Anyone know what it means? (....buy a new programmer...?) Instructions say there's no battery to replace as that was my first thought. I'm hoping to convert to S-plan soon by fitting a new valve so want to be sure it'll work ok.
Towerchron DP72 last digit flashing
- Thread starter -Sean-
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