RV News RVBusiness 2021 Top 10 RVs of the Year, plus 56 additional debuts and must-see units → ×
 

Go Back   Thor Forums > Thor Tech Forums > Motorhome Tech Topics
Click Here to Login
Reply
 
Thread Tools Display Modes
 
Old 08-14-2020, 08:25 PM   #1
Junior Member
 
Brand: Thor Motor Coach
State: Massachusetts
Posts: 8
THOR #19390
AC not working On Hurricane 34J

Hello folks,

We have been enjoying our Hurricane 34J this year, but we are having issues with our AC Units.
When we get to a campsite, plug in and get the AC going after we are set up, both units works fine, but after a day or so, the bedroom unit compressor stops working and only the fan will be on.
Once that happens, the front AC unit will run fine as long as the thermostat is calling for AC, but them when it doesnít, the fan shuts off and the compressor stays on! Pretty weird.
The one way I found to bypass this problem until I find a fix is to shut the whole camper off on the main breaker, wait a couple of minutes, then turn it back on. That will get both units working fine again.
Does anybody have a clue of whatís going on with my ACs? Thanks in Advance!
__________________

__________________
Dudupatty is offline   Reply With Quote
Old 08-14-2020, 08:50 PM   #2
Senior Member
 
Brand: Thor Motor Coach
Model: Hurricane 31S
State: Texas
Posts: 2,342
THOR #6411
Quote:
Originally Posted by Dudupatty View Post
Hello folks,

We have been enjoying our Hurricane 34J this year, but we are having issues with our AC Units.
When we get to a campsite, plug in and get the AC going after we are set up, both units works fine, but after a day or so, the bedroom unit compressor stops working and only the fan will be on.
Once that happens, the front AC unit will run fine as long as the thermostat is calling for AC, but them when it doesn’t, the fan shuts off and the compressor stays on! Pretty weird.
The one way I found to bypass this problem until I find a fix is to shut the whole camper off on the main breaker, wait a couple of minutes, then turn it back on. That will get both units working fine again.
Does anybody have a clue of what’s going on with my ACs? Thanks in Advance!
Each A/C has its own controller; both work by interpreting the signals from the thermostat. If the compressor shuts down and the fan keeps on running usually the evaporator is frozen up and the compressor's high pressure switch shuts it off. The fan continues to run to defrost the evaporator. This is a long process some times taking an hour or more. If the fan shuts off and the compressor still runs, it can be a bad controller, but usually it is a fan overload causing the motor to overheat. This problem s usually a bad sleeve bearing on the motor shaft.
__________________

__________________
Jim & Roy Davis
2016 Hurricane 31S
1961 Rampside in tow
Beau388 is offline   Reply With Quote
Old 08-14-2020, 09:32 PM   #3
Senior Member
 
Judge's Avatar
 
Brand: Thor Motor Coach
Model: 2020 Magnitude SV34
State: Florida
Posts: 1,534
THOR #12751
AC not working On Hurricane 34J

Do you have the Firefly Multiplex system?

If so, I had the same issues happening with both my A/C units. Sometimes only the fans would run. Sometimes the compressors would run and the fans would not.

I had to shut down the 12V to reboot the system to fix the problem but it would eventually return. My coach is under warranty and after troubleshooting with Firefly support they determine the main G7a board needed to be replaced.

Since I had that done in June, I have not had any more issues.
__________________
Judge is offline   Reply With Quote
Old 08-14-2020, 09:45 PM   #4
Junior Member
 
Brand: Thor Motor Coach
State: Massachusetts
Posts: 8
THOR #19390
Thanks for your reply. The weird thing is that once you shut down the main breaker and turn it back on, both units goes back to normal.
__________________
Dudupatty is offline   Reply With Quote
Old 08-14-2020, 09:49 PM   #5
Junior Member
 
Brand: Thor Motor Coach
State: Massachusetts
Posts: 8
THOR #19390
That makes sense. We have a 2019 hurricane 34J and it has a touchscreen control panel. I’ll check the manufacture of the touch screen to see which switch board they use. Thanks!
__________________
Dudupatty is offline   Reply With Quote
Old 08-15-2020, 01:05 AM   #6
Senior Member
 
Judge's Avatar
 
Brand: Thor Motor Coach
Model: 2020 Magnitude SV34
State: Florida
Posts: 1,534
THOR #12751
If it looks like this, itís a Firefly system.

Click image for larger version

Name:	IMG_6581.jpg
Views:	22
Size:	76.8 KB
ID:	25563
__________________

__________________
Judge is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by Thor Industries or any of its affiliates. This is an independent, unofficial site.




All times are GMT. The time now is 12:21 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0 PL2
×