Remove the baseplate from the wall by removing the 2 screws.ĭisconnect the 2 wires that go to the terminals on the baseplate making sure that you don't loose the wire down the wall(tape some string to the wire). Remove the themostat from the wall by pulling the bottom of the thermostat from the baseplate. We are going to see if the thermostat wire is faulty. TESTING IF YOUR MPS CONTROLLER IS FAULTY. You might be able to dignose by a process of elimanation.ġ. I am not a brivis tech but I have been around these unit to know how the work. No thermocouples in the brivis HE20i, thermocouples are only a pilot flame flame faile device and you have no pilot light.īrivis servicing of these HE units is a closed shop and only done by brivis techs. Īny ideas what wrong with the unit and how we can fix it?Īlso, where is the Thermocouple for this HE 20i unit (very similar like this one)?ĭoes the wall controller have a reset function/button?

We can see the fire ignited but off within a coupe of seconds, fan runs, the fire ignited but off again. Sometime, we can turn the wall controller, the heating unit seems working for a while but will off again later. Sometime, we can turn on the wall controller but it off again after a few second. Sometime, we cannot turn on the wall controller even it displays time (but no Heater/Fan). Strange enough, the heating unit can run differently each time. When turn on the heater in 'Manual' operation, the wall controller is automatally on and off but no hot air coming into the house. When operating with the Fan only, it works fine. The wall controller is working and shows Heater, Fan and time. Have a Brivis HE 20i ducted central heating unit with:

Brivis ducted heating user manual