Customer had three of her thermostats replaced with nest thermostats Buy someone else: (2) heating only thermostats (1) AC only thermostat Nothing in home is working: * Add arrival remove the nest thermostat from the wall and check the wiring * Found wiring completely incorrect behind both thermostats for the kitchen and the living room * Found the kitchen thermostat wired to R and Y When it only controls heating * Found the living room thermostat wired for RC, Y, W and C * Check the boiler- The wiring at the boiler does not match the wiring at the thermostat * Shut power to the boiler * Rewire kitchen, thermostat and Argo switching relay at boiler * Had to trace wiring for the main zone thermostat as the thermostat Wire was not the same at the boiler * After tracing wiring and making corrections ( splicing correct wires ) Rewired the first floor main zone thermostat in the living room and the Argo switching relay at the boiler room * Return power to the equipment * Confirm that th