hello, I have a bighorn 3270 RS 2016, here is my problem: I have 2 air conditioning, one in the bedroom and the other in the living room, the one in the living room plus the heating function, I see that there is has 2 zones, 1 and 4 but I am not able to set it to zone 4, so I only have Fan and Cool mode… .. can you help me reprogram my thermostat to have the Furnaise function… .. Thanks in advance