Split unit on r 407c

[eurocooling]

Have a CRAFFT wall mounted unit works perfect on cooling check gas pressure which
Is correct then I put on heating start blowing warm for 2 mins then fans shut of and
Outdoor compressor for a few mins comes back on blows ambient air can some one help ?
This is 6 years old

[Brian_UK]

What is correct gas pressure?

Is it correct in heating?

[eurocooling]

The pressure on cooling is just under 5 bar