If the compressor will not operate in the cooling mode, the best thing to do is _____.

Which of the following conditions is likely to exist in the defrost mode?

If a heat pump operates normally in the reverse cycle heating mode, but does not run in the cooling mode, a likely cause is the _____.

If you wanted to determine if the thermostat is sending a signal to the reversing valve, which terminal would you check for voltage?

If a heat pump system shows low suction pressure and high superheat during cooling operation, but operates normally in the heating mode, a likely cause is _____.

If a heat pump works in the cooling mode, but the reversing valve does not switch over when there is a call for defrost, a likely cause is a defective _____.

If the outdoor fan of a heat pump operates normally in the reverse cycle heating mode, but does not shut off during defrost, a likely cause is a defective _____.

In which of the following modes would you expect to find hot, high-pressure refrigerant flowing through the outdoor coil?

If all stages of the auxiliary electric heaters of a heat pump fail to operate on demand in both the heating and defrost modes, but all other functions work normally, a likely cause is a _____.

In the heating mode, the reversing valve will normally be _____.

When the emergency heat feature of a heat pump thermostat is turned on, the usual effect on the heat pump is _____.

A ground source heat pump is one in which the _____.

Refrigerant temperatures and pressures in the cooling mode of a heat pump are _____.

Each of the following occurs in the reverse cycle heating mode of a heat pump, except _____.

If relays and contactors are chattering, a possible cause is _____.