To do outdoor reset control Bosch told me I needed the FW200, so I got one and put it on the front of my boiler today.
I did not put the Bosch temperature sensor up because my contractor had already put one up, a standard Honeywell 2 terminal deal. The two sensor wires are attached to the A and F terminals on the board in the boiler. I checked the connections, and put my volt meter across the A-F terminals on the boiler's board (power off) and read 1660 Ohms, and it was just over 30 degrees F outside, which seems right.
I am getting error 15: outdoor temperature sensor not connected. Outdoor temperature not available.
Why if the resistance is measuring properly right at the screw terminals on the boiler is this thing (the FW200) not reading outside temperature? Bosch will not talk to me unless I am a contractor. Please help
I can A) get a Bosch temperature sensor and replace my brand new (apparently working) one. I need the part number because the FW200 I bought was used and working, but did not come with the outdoor temperature sensor. I probably don't need the housing just the electrical thermo resistor.
? I don't know what else to do.
The boiler is a brand new Bosch 151 combi boiler installed with baseboard heat in two zones (up and down stairs).
Seems like a great machine.
I want to have the boiler water temperature adjusted based on outside temperature.
I need 175 F water when the temps are -10 F, but can run cooler boiler temps when it is warmer outside.
Also, is the FW200 compatible with my Google NEST?
Also, why is this so complicated??