Originally Posted by twags
I was looking at the 3T soft starter from MicroAir and on the installation there's a note that you have to change to a relay, do you have any info on that.
I don't think so, or at least I did not. The impression I got was that for RV type AC units it was a very simple 4 wire install and bypasses the start capacitor and PCTR. I posted the wiring diagram for my dometic unit as an example.
From their Emails to me I quote:
"EasyStart is VERY different than a hard start kit. It is a highly-sophisticated, self-learning, active and real-time controlled starting device as described in its specification sheet. It can attain up to 70% starting current reduction, while the best hard start kits can perhaps attain only 20%."
"We are mostly familiar with the different thermostatic controls sold by Dometic in their rooftop systems. None of them that we are aware of use a triac to control power to the compressor. The note in the EasyStart installations that talks about triacs was targeted primarily to the Dometic/Cruisair brand marine A/C systems that did at one time use a triac to switch the compressor on and off. The only other item that I would suggest you look for in your Penguin rooftop is what is called a start assist or “PTCR”. This device is typically wired across the run capacitor, which is exactly where you installed the hardstart. Chances are you may have already removed the start assist if there was one. If not, make sure you take it out before you install the EasyStart. The run cap of course must be retained."