The room thermostat for control of my central heating system is a Siemens RDH10RF wireless unit but I am unhappy with the temperature tolerance provided.
The unit seems to operate to +/- 1degree C of the set temperature, in other words if the controlling temperature is set to 21 degree the heating will continue to operate until 22 degree is reached and only turn back on when the temperature has dropped to 20 degrees. This results in a waste of energy to obtain the upper tripping temperature and a cool room temperature before the system will restart.
Is anyone able to -
1) confirm this tolerance is not typical of wireless room thermostats
2) suggest an alternative wireless unit where tripping temperature will closer reflect the set temperature