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Hi, If I was to buy a new sender unit RT500RF , would it match ok once the jumper settings have been set?? The last two years I have used the RT500RF. I have always had the settings set at 5 deg, then when I want the central heating on I would increase the temp above the 5 deg. ie room temp 16...

Hi, If I was to buy a new sender unit RT500RF , would it match ok once the jumper settings have been set?? The last two years I have used the RT500RF. I have always had the settings set at 5deg, then when I want the central heating on I would increase the temp above the 5 deg. ie room...

Hi, the last two years I have used the RT500RF. I have always had the settings set at 5deg, then when I want the central heating on I would increase the temp above the 5 deg. ie room temp 16 deg scroll up to say 20deg the heating would come on. My problem started today, the heating just turns...