Heat Pump Test with Correct Solutions

Faulty defrost delay does not energize the auxiliary heat during defrost mode - Customer complains that the heat pump system blows cool air periodically during the heating mode this could be caused by The outdoor coil is colder than the ambient air - When the heat pump is in the heating mode what can cause frost accumulation on the outdoor coil when ambient temperature is 45°F Anytime there is a call for heating or cooling - The indoor fan on a heat pump system operates Time and temperature - The defrost cycle can be initiated by Time / temp - The defrost cycle can be terminated by Bleeding pressure from one side of the piston to the suction side of the compressor - Movement of the piston in the reversing valve is accomplished by Electronic expansion valves can meter refrigerant in either direction - Some close coupled package unit heat pumps using electronic expansion valve to meter refrigerant one advantage to using electronic expansion valve is Must be bi-flow design if used without check valves - Liquid line filters / dryers that are On heat pump systems Defrost cycle - When installing the heat pump outdoor unit care should be taken to provide drainage during the Before - The indoor coil is usually mounted in the air stream____ electric heat strips +10°F - Air to air heat pumps are most practical to operate in areas where the lowest winter temp does not go below After the heat exchanger - On Duel fuel, systems the indoor coil must be located 100°F - Who did hear heat pumps operating without auxiliary provider to the registers that is approximately _____or less