If you watch Arizona RV guys YouTube. He was installing a Freshjet 5 on an older Penquin II...and couldn't get it to work with the RJ11 - RJ45 adapter.
We wound up replacing the new units control board with one salvaged from Penquin II . Another owner found the wires not in the correct position on some of these RJ12 to RJ45adapters and got his to work with crimping on a new plug with the wiring corrected.
My experience was with a 15k Mech Only, A/C only...unit, because that was all that was in the supply chain July2025. I am waiting to see if tariffs are repealed. Paid $2200 iirc for the A/C at that time. Got scalped. New Freshjets 15k HP models are around $1800 now... hoping they might go down a bit more.
I buy whichever... electronic version or mech only version...because I'm swapping out the controller for a Penquin II CCC2 type controller. And will be wiring in the MicroAir EasyStart Breeze with BlueTooth at the same time.
People have found the standalone CCC2 boards had been replaced with a new part number...but still having issues with availability. The ones I found of the new part number were being sold for around $200. Instead of a standalone control board for $200... I decided to buy the version that is the same CCC2 compatible control board, stuck inside a metal box, wired to a 6 pin and a 3 pin molex plug, some miubting screws and a freeze sensor for the evaporator. I'll just transfer the board from the metal box (designed to lount inside the housing of those plastic ceiling air distribution panels) to the rooftop units metal doghouse that looks the same as the Penquin II's.
If you compare the Freshjet to the Penquin, the styling of the housing is different, cover screws on better, R32 refrigerant, has a blue coating on the evap coils, runs a bit quieter, capacitor value is slightly larger...but not a whole lot of anything. If you get the electronic version...they mount the co trol board in the return air plenum. I don't knownwhy anyone would want to block the airflow with a controller housing.
BTW the controller in a housing for CVC2 was less than $60 on Amazon. I picked up two for my future installs. I can't remember if they include outdoor temp sensor on the Freshjet...or if that was something g I salvaged from the Penquin II, but I picked up a couple of those too.
I am super happy with my CCC2 system. I have the MicroAir Easytouch and it is the Bomb. Connected to WiFi, I can control HVAC from my smartphone anywhere I go. The AGS system works with the CCC2 system to run the genny for A/C when boondocking (important feature with pets) I was not going to run cat6 wire thru my roof, and replace my thermostat for the new communication standard. I see no advantage to adding another failure point with 4 new RJ45-RJ12 wiring adapters. What the controller does isn't rocket science. It co trols a relay for the compressor after a co trolled delay period, it make a FAN turn in one of three speeds, it can share information to control your furnace, temp sensor signals, temp sensors, freeze sensor... to me Freshjet adds nothing of great importance to my CCC2 equipped motorhome. It is aimed at much more recently built electronic coaches... they messed up big not making it an option to have CCC2 compatibility the same...and stupid to mount the co trol boz of the E model in the air plenum.
