Some thermostat may have a feature called Emergency Heat where when set, it will shut off the heat pump. Visiting HVAC events and trade shows are one of the best way to equip yourself with the latest happenings in the air conditioning and refrigeration field. There should be a marked increase in temperature from where it goes in to where it comes out. The G terminal is connected to the indoor fan which circulates the air in the room. Additional articles on this site concerning thermostats and wiring can help you solve your problem or correctly wire a new thermostat.
They should give you a one year warranty on all work.
Thermostat Wiring for Dummies
Look out for the following features that are incorporated in most modern programmable heat pump thermostat. My problem is now when i turn my cooling system on the outside compressor starts to run then kick off and then back on. Use this technology for comfort and better energy efficiency. See our other helpful HVAC calculators placed throughout the site: The Basic heat pump wiring for a heat pump thermostat is illustrated here. At the minimum draw a picture of it referencing the wires, wire color and what terminal the wire is attached to what terminal.