How to tell if the danfoss is buggered in my evakool

Hi all, I hope they new year is treating every one well.

My evakool wont start (flashing 3 times on the fault light.)

I called evakool and they said compressor probably stuffed, not worth fixing as will cost almost same as a new one and if get any other fridgies to fix will cost even more because they cannot buy the compressors as chaep as them.????

It is about 8 years old and is used about 4-6 weeks / year so had say 40 weeks use????

It did show a fault light one other time before we started a trip a couple of yras ago but then suddenly started and has not faulted since.

It is very hot at present (42 + last few days) and so i feel possibly head pressure higher than usual for start up??
Or is it just going to let me down soon any way even if it does start when the weatehr cools off?

I left it on yesterday and found it had started and come down to temp, but then i turned it off and then 10 min later on aagian and went to fault again.

Does any one have any tips or advice on how to determin the cause / problem and what the best solution is?
What are a new BF 30 (i think this is the comprsor model) worth?
Have they been improved in the last few years or are they still the same as what i i have?
What is an expected life span / running hours?

Kind regards
GN