Question

the purpose of the emergency heat switch on a heat pump is
o to lock out the back - up heat
o to bypass the heat pump
o to bypass the thermostat
o to bypass the outdoor temperature sensor
o to have both the back - up heat and the heat pump operating simultaneously

Explanation:

The emergency heat switch on a heat pump is used to bypass the heat - pump system and switch to the backup heating source, usually in case of heat - pump malfunction.

Answer:

to bypass the heat pump