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06-23-2019, 08:00 PM
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#1
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Junior Member
Brand: Thor Motor Coach
State: Florida
Posts: 7
THOR #10484
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AC power loss
Suddenly while parked, all AC was lost, including shore power and Onan generator power. I reset the AC Main circuit breaker but no luck. Any ideas of the cause?
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06-23-2019, 08:05 PM
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#2
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Senior Member
Brand: Still Looking
Model: Travato
State: Florida
Posts: 2,475
THOR #1765
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I think we need a little more info. First which coach do you have? Were you plugged into shore power when this happened? And you have tried the A/C on both shore power and generator and it doesn’t work? Does everything else work?
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06-23-2019, 08:53 PM
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#3
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Site Team
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,128
THOR #7035
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It's a Thor: Check your wiring to the Automatic Transfer Switch, specifically the wire nuts that connect wires together. Common problem.
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Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad - Selling
2020 Chevy Colorado Z71 Trail Runner Toad
2024 Chevrolet Trax 2RS - Soon 2B TOAD
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06-23-2019, 10:09 PM
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#4
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Junior Member
Brand: Thor Motor Coach
State: Florida
Posts: 7
THOR #10484
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A?C power loss
Sorry, I missed all the important info. 2018 Thor Siesta 24SS. Failure was while hooked up to shore power only minutes away from leaving on a trip. Yes, I tried the generator; still no transfer of A/C (I have a constant plug-in of a volt meter). The shore power checked at 120V but none showing in the RV. The DC is fine, especially with roof solar panels.
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06-23-2019, 11:01 PM
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#5
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Senior Member
Brand: Still Looking
Model: Travato
State: Florida
Posts: 2,475
THOR #1765
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I agree with 16ACE27. If you have no 120v power at all with either shore power and generator and your main 120v circuit breaker is not open, then the next place to look is the transfer switch. The 120v power goes from the shore power plug and the generator to the transfer switch and then to the 120v circuit breakers. Make sure you unplug from everything and turn everything off before you fool with it.
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06-24-2019, 02:12 PM
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#6
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Junior Member
Brand: Thor Motor Coach
State: Florida
Posts: 7
THOR #10484
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2018 Thoe Siesta 24SS
Thanks for your input. I was thinking it was the ATS and searched all over but couldn't find it. Do you k now where the Switch is in the coach?
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06-24-2019, 04:16 PM
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#7
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Senior Member
Brand: Thor Motor Coach
Model: Hurricane 31S
State: Texas
Posts: 4,157
THOR #6411
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Usually the ATS is located just behind the Power Center. The power center contains the 12 volt fuses, the 120 volt circuit breakers and the charger. Manufacturers tend to keep all the high current devices close together.
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Jim & Roy Davis
2016 Hurricane 31S
1961 Rampside in tow
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06-24-2019, 04:44 PM
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#8
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Junior Member
Brand: Thor Motor Coach
State: Florida
Posts: 7
THOR #10484
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ATS behind Circuit Panel?
I already looked there; nothing but the back of the panel. Of course, it's hard to get to , being under a slide-out bed.
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06-24-2019, 05:00 PM
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#9
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Senior Member
Brand: Thor Motor Coach
Model: THOR Chateua 35SF
State: Florida
Posts: 5,850
THOR #11130
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Quote:
Originally Posted by Couter850
I already looked there; nothing but the back of the panel. Of course, it's hard to get to , being under a slide-out bed.
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Mine is in the storage bin closest to the power input of the shore power line. Call Thor Customer Service and have them email you the electrical schematic for your particular model. They are very responsive. Have your VIN at hand when you call.
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Now an SOB
Traded Thor for Melbourne Prestige 24NP
2018 THOR Chateau 35SF
Two Labs, Bugsie & Blondie
Blondie passed in 2020 at 5 to Leukemia
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06-24-2019, 06:25 PM
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#10
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Senior Member
Brand: Thor Motor Coach
State: Georgia
Posts: 2,585
THOR #4735
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you probably have a LOOSE connection, on the OUTPUT side of your ATS, since neither power source is getting thru to your Main Panel breaker box. Does your INVERTER provide power?
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the Turners...
two Campers, two Electric cars
former diesel pusher traveler
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06-24-2019, 07:29 PM
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#11
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Senior Member
Brand: Still Looking
Model: Travato
State: Florida
Posts: 2,475
THOR #1765
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Quote:
Originally Posted by Couter850
I already looked there; nothing but the back of the panel. Of course, it's hard to get to , being under a slide-out bed.
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In the Axis it is under the bed on the passenger side.
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06-24-2019, 08:58 PM
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#12
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Junior Member
Brand: Thor Motor Coach
State: Florida
Posts: 7
THOR #10484
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ATS found!
Thanks to all who helped locate this unit! My wife, after trying to dismantle the bed, said there is no way they could get to a unit UNDER the bed, so we opened the outside compartment door (at the end of the bed). There, hard to spot, was a full, thin panel wallpapered like the wall it was attached to with 6 tiny screws. With the panel off, there was the ATS right in the middle and surrounded by a number of small junction boxes.
Thanks again, everyone.
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06-24-2019, 09:03 PM
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#13
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Senior Member
Brand: Thor Motor Coach
Model: THOR Chateua 35SF
State: Florida
Posts: 5,850
THOR #11130
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Let us know if you find the issue with power outage.
__________________
Now an SOB
Traded Thor for Melbourne Prestige 24NP
2018 THOR Chateau 35SF
Two Labs, Bugsie & Blondie
Blondie passed in 2020 at 5 to Leukemia
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