Question

question 3
if a heat pump compressor has been running and is shut off, it should not be turned back on for five minutes because
o the system is too hot
o the refrigerant pressure on the discharge side is too high
o the refrigerant pressure on the discharge side is too low
o the refrigerant is too cold
o the oil needs to return to the sump before the system can start up

Explanation:

When a heat - pump compressor runs, refrigerant pressure on the discharge side builds up. Shutting it off immediately and turning it on soon can cause issues as the high - pressure refrigerant has not had time to equalize. High discharge - side pressure can damage the compressor if restarted too soon.

Answer:

the refrigerant pressure on the discharge side is too high