Go Back   Thor Forums > Thor Tech Forums > Maintenance and Repair
Click Here to Login
Reply
 
Thread Tools Display Modes
 
Old 08-25-2019, 02:45 PM   #1
Junior Member
 
Brand: Thor Motor Coach
Model: Four Winds
State: New Hampshire
Posts: 27
THOR #16319
Unhappy Fridge not working on AC power

My wife and I are retired and we bought a used 2011 Thor Four Winds Class C RV from an elderly couple in Palm Harbor Fla. and drove it back to New Hampshire where we live. We were staying at a campground and realized the AC part of the fridge wasn't working so we just used the propane until we got back home. Right now it's parked and we are getting to leave in a month to do some full time RVing. If you don't mind me asking you some questions about my fridge I would appreciate that.
My propane works on the fridge but the AC doesn't. Its a Norcold. I tested the 2 fuses and they are fine. Just to be sure in case they switched the fuses out. what do the amperage suppose to be on the two fuses?One fuse is round and the other one is flat.
The GFI wasn't popped. I'm getting power from the fridge outlet.
Is there anything that I can do before I hire someone to fix it.
__________________

__________________
Gee Rving is offline   Reply With Quote
Old 08-25-2019, 06:17 PM   #2
Senior Member
 
Brand: Thor Motor Coach
Model: 2013 ACE 30.1
State: Alberta
Posts: 778
THOR #2631
Hi, I am not sure which model Norcold you have but it sounds like it is a 2 source RV fridge (propane or 120VAC heater). The manual I have shows both fuses are 5 amp per the attached power board 2 source models shown. If you have a different model then you will need to check on line or in your manual.


So the fridge works on propane no problem, just the 120vac heater “seems” to have failed. You mentioned the fridge “outlet” has 120VAC on it......do you mean the two wires on the power board that feed the fridge 120vac heater element (marked AC Heater Terminals shown on the attached power board diagrams)? Or do you mean the duplex AC outlet inside the external panel of the fridge?
If you set the fridge for automatic and you are on shore power, (set your multimeter for AC volts at least 120vac); very carefully measure across the AC heater terminals on the power board. If AC is good feeding the heater terminals then the control board is probably good too and it is likely just the heater element is burned out.
To test the heater element continuity you must disconnect all shore, gen (off) and battery power (use/store off) from the coach and then carefully pull off one of the 120VAC heater feed wires from the power board. Use your multimeter set to “ohm meter” and see if you have any resistance reading across the heater terminals (one loose and one still connected to the board). If the heater element is burned out you should see open (no resistance reading) on the meter. If you check Youtube there are likely videos of changing out the heater element; or just get an RV tech or Dealer to do it for you.
Attached Thumbnails
Click image for larger version

Name:	Norcold Power Board.jpg
Views:	16
Size:	61.4 KB
ID:	19845  
__________________

__________________
javelin is offline   Reply With Quote
Old 08-25-2019, 10:08 PM   #3
Junior Member
 
Brand: Thor Motor Coach
Model: Four Winds
State: New Hampshire
Posts: 27
THOR #16319
Quote:
Originally Posted by javelin View Post
Hi, I am not sure which model Norcold you have but it sounds like it is a 2 source RV fridge (propane or 120VAC heater). The manual I have shows both fuses are 5 amp per the attached power board 2 source models shown. If you have a different model then you will need to check on line or in your manual.


So the fridge works on propane no problem, just the 120vac heater “seems” to have failed. You mentioned the fridge “outlet” has 120VAC on it......do you mean the two wires on the power board that feed the fridge 120vac heater element (marked AC Heater Terminals shown on the attached power board diagrams)? Or do you mean the duplex AC outlet inside the external panel of the fridge?
If you set the fridge for automatic and you are on shore power, (set your multimeter for AC volts at least 120vac); very carefully measure across the AC heater terminals on the power board. If AC is good feeding the heater terminals then the control board is probably good too and it is likely just the heater element is burned out.
To test the heater element continuity you must disconnect all shore, gen (off) and battery power (use/store off) from the coach and then carefully pull off one of the 120VAC heater feed wires from the power board. Use your multimeter set to “ohm meter” and see if you have any resistance reading across the heater terminals (one loose and one still connected to the board). If the heater element is burned out you should see open (no resistance reading) on the meter. If you check Youtube there are likely videos of changing out the heater element; or just get an RV tech or Dealer to do it for you.
It's a Norcold N611FLT.. The power source I checked was the outlet where the fridge plugs into. I didn't probe no wheres on the board. I will try some of your thoughts.
Thank you so much for the reply and the pics.
__________________
Gee Rving is offline   Reply With Quote
Old 08-25-2019, 11:08 PM   #4
Senior Member
 
Brand: Thor Motor Coach
Model: 2013 ACE 30.1
State: Alberta
Posts: 778
THOR #2631
Sorry I missed the 61x Power board picture....see attached. Looks similar to the other models. I guess the other method of testing if the 120vac heater is working is very carefully touching the chimney pipe after the 120vac heater has been turned on the fridge (set for control panel to auto and connected to shore power). No heat means element is not working.....but there is still proving if the 120vac is actually getting to the heat element wires through the power board. I am sure it will be a straight forward repair though. Good luck.
Attached Thumbnails
Click image for larger version

Name:	61x Power Board.jpg
Views:	17
Size:	47.8 KB
ID:	19849  
__________________
javelin is offline   Reply With Quote
Old 08-25-2019, 11:10 PM   #5
Junior Member
 
Brand: Thor Motor Coach
Model: Four Winds
State: New Hampshire
Posts: 27
THOR #16319
Quote:
Originally Posted by javelin View Post
Sorry I missed the 61x Power board picture....see attached. Looks similar to the other models. I guess the other method of testing if the 120vac heater is working is very carefully touching the chimney pipe after the 120vac heater has been turned on the fridge (set for control panel to auto and connected to shore power). No heat means element is not working.....but there is still proving if the 120vac is actually getting to the heat element wires through the power board. I am sure it will be a straight forward repair though. Good luck.
Thanks, you guys are the best
__________________
Gee Rving 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 01:50 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0 PL2