I am just finishing rebuilding my fridge and freezer
and have gone for the option of separate Danfoss compressors for each. This gives me the option of using both as freezers, fridges or one of each, admittedly at a price
in terms of battery
Both compressors are in the same compartment with plenty of inward ventilation and I have installed an extractor fan to help keep the compartment cool.
So far so good - it works and, thanks to good insulation
, is using less battery
than the old installation using only one compressor
However, I don't want the extractor fan to be switched on when neither compressor is working and, to do this, I presume that I must take the power for it from the positive feed to each compressor so that power will only be supplied to the fan when one or both compressors are running.
Question: Do I need to take any precautions (diodes or whatever?) to prevent the second compressor from running off the power of the other via the fan when, the thermostatic controls would only have one running?