Overheating Problem with Lifestyle 552 Thermostat Timer for Heating System

[drnataraj]

Hi,
My heating system is convetional boiler with lifestyle 552 termostat timer
> My problem is, Gas boiler is on even when thermostat temp.is low and timer is off? basically house is getting overheated.
please let me know
Nat

[toneyt]

could be 2 things the clock or most likely your heating valve staying open and keeping the boiler/pump going
T