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 > Maintenance and Repair
Click Here to Login
Reply
 
Thread Tools Display Modes
 
Old 09-08-2020, 03:36 PM   #1
Member
 
Brand: Thor Motor Coach
Model: Thor 29M Hurricane
State: Wisconsin
Posts: 39
THOR #7934
No battery power

2018 Thor Hurricane 29M
Boon docking, had battery power. ran generator to charge batteries. use store on. Batteries charged if at all. ran for hours. Ran RV, batteries charge up fine using RV alternator. Got home and next day, no battery power at all. use store on. Battery tests to 12.7 V. Plug into shore power, all works. Test at 100 amp breaker, no reading. Any ideas???
__________________

__________________
CHUCK52 is offline   Reply With Quote
Old 09-08-2020, 04:40 PM   #2
Senior Member
 
Brand: Thor Motor Coach
Model: Hurricane 31S
State: Texas
Posts: 2,255
THOR #6411
Quote:
Originally Posted by CHUCK52 View Post
2018 Thor Hurricane 29M
Boon docking, had battery power. ran generator to charge batteries. use store on. Batteries charged if at all. ran for hours. Ran RV, batteries charge up fine using RV alternator. Got home and next day, no battery power at all. use store on. Battery tests to 12.7 V. Plug into shore power, all works. Test at 100 amp breaker, no reading. Any ideas???
Without shore power will the generator start? That will load test the house batteries. If the generator starts, shut it down and see if the interior light works with the Use/store switch in use (master power on). If no interior lights, check the 50 amp circuit breaker in the back of the battery compartment for a flag (no test button). If it not tripped and no lights, you probably have a bad latching relay under the bed. Just a note - if the batteries are low the use/store switch will not work as the latching relay needs 10.0 volts to latch.
__________________

__________________
Jim & Roy Davis
2016 Hurricane 31S
1961 Rampside in tow
Beau388 is offline   Reply With Quote
Old 09-08-2020, 06:09 PM   #3
Site Team
 
16ACE27's Avatar
 
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 5,194
THOR #7035
Wow! let's see if I can understand this:

Quote:
Originally Posted by CHUCK52 View Post
2018 Thor Hurricane 29M
Boon docking, had battery power. - So everything worked normally?

ran generator to charge batteries. use store on. - So batteries got low; so you ran the generator to charge the batteries - pretty standard stuff, obviously the generator started and ran.

Batteries charged if at all. - Gotta help me out here; what are your trying to say?

ran for hours. - Ran the generator for hours? Batteries did NOT charge?

Ran RV, batteries charge up fine using RV alternator. - So the house batteries charge as expected from the RV engine and alternator.

Got home and next day, no battery power at all. use store on. Battery tests to 12.7 V. - Without being plugged into SP you have no DC power in the RV and you believe the USE/STORE latching relay is in the USE position.

Plug into shore power, all works. - With SP the Converter is now supplying power to the DC buss.

Test at 100 amp breaker, no reading. - Tested voltage? Neitherr side read 12 VDC to ground or you tested from one side of the breaker to the other? What exactly did you test?

Any ideas???
You think you're confused?

The 100 Amp DC breaker connectes the house batteries to the hydraulic pump and generator starting circuit. You obviously have not problem there as your generator starts.

There is a 50 Amp DC breaker that connects the house batteries to the USE/STORE latching relay and DC buss. Locate it, check it., reset it, then place your USE/STORE switch in USE.
__________________
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad
2020 Chevy Colorado Z71 Trail Runner Alternate Toad
16ACE27 is offline   Reply With Quote
Old 10-26-2020, 09:32 PM   #4
Junior Member
 
Brand: Still Looking
State: Ohio
Posts: 3
THOR #21032
Also looking for the location of the DC breaker in my 2011 THOR ACE 29.1.

House battery disconnect not illuminating when I put in USE.

House power with generator and shore power. No hous epower when boondocking.

Both house batteries seem to be charged at 12.9 when tested.

Maybe the DC fuse is tripped?
__________________
jscanlon 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 03:14 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0 PL2
×