Two Stage Thermostat Wiring Diagram. That is a basic honeywell thermostat wiring diagram for a single stage heat pump. Sequence of operation diagnostics 9mpv 9mvx 50.
Use this table for reference only. Notes to the table above only 2 wires found in use at the wall. Thermostat that have wires in them do not use wire colors enter the connector labels do not enter any jumper wires into the checker see step 5 if your system is compatible youll get a custom wiring diagram that you will need to install your nest thermostat.
Do not install the front cover on the equipment interface at this point.
How to address a component in wiring diagrams. Two stage heat control wiring 7 this diagram is to be used as reference for the low voltage control wiring of your heating and ac system. The programmable thermostat has two terminal blocks the non programmable thermostats have only one. Use this table for reference only.