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Mend Honeywell DT20RF Thermostat Boiler Programmer

do i need a new dt20rf programmer?

the digital display has gone blank and does not control the heating. the boiler still works and can be controled by the boiler thermostat. ihad to turn this down to frost as the heating came on and would not go off.

John
June 2012
yes

AWOL
June 2012

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