Shut off the ability on your thermostat. Turn the switches off on the breaker box that pertain on your thermostat, furnace and air conditioner. Turning off the power for the thermostat lowers the probability of electrical injuries as you take away the aged thermostat and install The brand new one. https://centralairconditioningrep98753.eedblog.com/35060621/mini-split-repair-options