Hi, I have a digital temperature controller, it states that only supports 12A for inductive loads. On the diagram there is only load shown. My question is: can I wire in series two fans of .70 A plus a compressor of 9 A?

Thanks!

P. D. Manual is attached.

 

You may wire your 3-Loads in parallel, not in series.
but this is very risky !!!

Your Controller being rated at ~12-Amps simply means that it probably will not explode in a ball of flames
if the Load happens to peak-out at ~12-Amps on rare occasions.

You have mentioned the word "Compressor", that can be many things, and most of them are not good.
A "Compressor", "rated" at ~9-Amps, may draw ~30-Amps during "start-up".

What happens if the Compressor gets into a "Locked-Rotor" condition,
and starts drawing ~40-Amps for several Seconds, or more ????

Never trust the Current ratings on this type of device
unless You have direct experience with it under "real-World" conditions.

I would recommend that a much heavier Switching arrangement be used to operate the Compressor.
This could be a Mechanical-Relay, or a Solid-State-Relay, ( SSR ).
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