Compatibility with Bosch heat pump

[human156]

Why won't Google redesign the nest thermostat so that it works properly with a Bosch variable speed heat pump?

[CoolingWizard]

Each manufacturer uses proprietary communications with the various advanced systems, so would be almost impossible to program a nest thermostat to communicate with those very advanced systems that the manufacturers produce using proprietary thermostats. Some manufacturers who have advanced systems like that also provide a control board that can be used with old conventional system so you have to tell me the model number of the Bosch system you have so I can look it up for you and see if it has a control board for conventional hook ups using a thermostat like nest

AC Cooling Wizard

[human156]

Installer Kendrick Heating and Air
Product category Air­to­Air Heat Pump
Name of product BOVA60HDN1M20G
Serialnumber 399A­279­000109­8733952438
Installation date 6/7/2023
Registration date 5/31/2024

[CoolingWizard]

@human156 ,

A product code of BOVA an Bosch Outdoor Inverter based 4 to 5 ton Heat Pump and it uses a conventional HVAC wiring which is fully compatible with the Nest Learning Thermostat as long as the Indoor unit is a Bosch BVA series i.e. BVA60WN1. The indoor unit can support up to 3Heat and 2 Cooling thermostat.  

AC Cooling Wizard 

[Backwoodsmen]

What is the wiring ? The app tells me that it is not compatible.. ita a Bosch BVA36WN1-M15

[Backwoodsmen]

I also have 7 wires. 

• C blue
• O orange
• W/E black
• W2 white
• R red
• G green
• Y yellow

[CoolingWizard]

@Backwoodsmen,

I would need to see the old thermostat and which color conductor is attached to which terminal.  

AC Cooling Wizard