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problem with room thermostat control?

i have a problem with the room thermostat not controlling the boiler, the boiler works ok using the intrnal thermostat. there does not seem to be any electrical out put at the external connection block on the programer, all the fuses on the programer test ok.

jimmy g
April 2009
Heating, Home Heating SystemsProblem Control Electrical

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Thermostat Not Controlling Boiler - Help