This from Acuario in response to questions about controller electronics:
Quote:
Hi AC,
The fan sounds like it is single speed. You will probably find one wire goes to a common connection somewhere, the other 2 go to a capacitor and then one of the wires from the capacitor connects to the main feed. The capacitor is there to give an offset phase to run the motor.
On my units (at the moment) as I only use them for heating I run the fan continuously so just connected to the live feed.
The compressor is controlled via a connected to a mechanical thermostat. This switches the compressor (and fan) on/off when there is a call for heat.
I did build a defrost circuit (plans etc. on the forum) that controls the compressor and changeover valve. It seems to work well. It hasn’t been that cold here this winter so it’s only operated a couple of times.
I just acquired a machine that actually has got a sump heater – never come across one before! Interestingly I found the manual for the controller that manages it plus the defrost etc. and gives all the timings etc.
You can get the manual here.
Regards,
Nigel
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NOTE: Acuario live in Spain where compressor sump heaters are not needed, thus his surprise.
Best,
-AC