Whether it be Ducted Air, Hydronic Radiator, or Hydronic floor heating, there are generally two basic parts to your heating system:

  1. The thermostat: this is in the house and turns the boiler or heater on or off; and
  2. The boiler or heater: this heats up the air, radiator, or floor.

Your thermostat ‘speaks’ to your boiler or heater to communicate when heat is required and supplies a signal for the boiler to start up. Once the thermostat has reached its set temperature, the relay then opens, turning the boiler off. You can hear the relay ‘click’ on and off when this happens.

When your heating doesn’t come on, the following checklist can assist with identifying the problem:

  •  Read the operating instructions for the thermostat to make sure it is programmed correctly
  •  Check that your boiler or heater is turned on
  •  Check the batteries in the thermostat

Once you have inspected all the elements in the above list, check if there is a display on the thermostat, if not, your thermostat may be faulty.

If there is a display on your thermostat, but your heating is still not on, put the thermostat to manual and set the temperature above room temperature, which is anywhere between 25°C and 29°C. The heating symbol should then come on the screen and your heating should turn on. If this is the case, you may proceed to reprogram the thermostat.

If the heating symbol is visible on your thermostat, but the heating still does not come on, then there is a fault with either your thermostat or boiler. A heating serviceman will need to be called to fix your heating.