Quote:
Originally Posted by Judge
So I don't have the Vegatouch model in my 2020 Magnitude but there are common components with the Firefly multiplex system so I will share my experience.
On one hand, it is strange that you are having issues with both A/C units (as was my case) and the common denominator is the Firefly system controls both.
You problems sound different than mine but it is worth giving you another data point. Back in March and April I started having issues with both A/C units. The system would be running ok but then I would start experiencing one of the following different scenarios:
- The fans would run but the compressors would not even though the panel was calling for cooling.
- The compressors would run but the fans would not.
- When one of the above issues would occur, the control panel would not turn off the A/C units or the fans.
The only way I could recover was to shut down the 12V to the coach to turn off the FireFly system and cause it to reboot. Then things would work ok for a bit and then the problems would start again. After troubleshooting with Firefly, it was determined I had a bad G7a main board. I had it replaced under warranty. Rebooting the system temporarily fixed the issue every time. Since I had the mainboard replaced, I have not had any more problems and we have used the A/C a lot.
It would be easy for you to shut down the 12V on your coach and reboot the system to see if it has any effect..... I am going to guess it won't but it is worth a try.
Since you coach was used when you bought it you don't have a full history. To me it does sound like different issues with each unit. The other common denominator in this case (as has been mentioned) is power.
The coach could have experienced a power surge causing damage to both units if they were running and a surge protector wasn't being used.
With the unit running but not cooling well, it might be worth climbing on the roof to make sure the condensor is clean and not obstructed. I know the coach is only a couple years old but depending on where it was used and how it was stored, the condensor may be very dirty and causing airflow restrictions that are killing its performance.
While you are up there, you can look to see of the condensor fan is running on the other unit is running and if it is only the compressor not starting.
I assume you have tried just running only one unit at a time... that could help determine if you have an issue with your power source and the units are not getting enough voltage to run properly. A voltage issue would be amplified when trying to run both units at the same time.
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Thanks. It can't hurt to try the reset for sure. I had just read the Firefly documentation and on one of the last pages there is a section about resetting the PMM in a similar fashion.
I have tried running only one unit at a time, same issues. Also I have been on top certainly and made sure everything is cleared out. Wasn't dirty but surprisingly did have little pieces of styrofoam stuck in there, just bad craftsmanship.
I appreciate all the help. At this point, my next post on this is likely to be I just replaced them or got them recharged but if something different takes place such as one of the resets I will certainly post that as well for other's reference.
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