Loss of partial power

wa8yxm wrote:
Most everything save the microwave and the opitonal RESIDENTIAL Fridge use 12 volt DC, this includes the water heater, and Air Conditioners.

Fridge, water heater and Air conditioners use 12V DC? No.

Most everything save the microwave and the opitonal RESIDENTIAL Fridge use 12 volt DC, this includes the water heater, and Air Conditioners. But the WASHING MACHINE. I would think woudl be a 120 volt only device.

Suspect list as follows. with comments

Circuit breakers: These are always #1 Includes the MAIN breakers Cycle them.. Most people think if one trips the other does too.. not true.
GFCI is #2
Joke (not)Many RVers have a few screws loose.. Story:
When this righ was like six nmonths old the Air Conditioners were giveing me fitsk Sometimes the front one would work, sometimes the rear, sometimes both or neither,, So I started trouble shooting.. By chance I started with the breakers.

Noticed some movement in one of the wires where it is clamped to the breaker.. Yup, screw was loose. One screw took over TWO FULL TURNS before I felt resistance and over 3 full turns to tight.. Several were loose.. White, Black and Green, all 3 colors.. So the lose screws are the kind you tighten with a #2 square bit.

Side note: Another RVer citing my joke found some loose nuts on his 12 volt side of life. So we have loose screws and loose nuts.

As others have said LIGHTS are a 12 volt item, as is the furnace.. You said Batteries are CHARGED.. how are you measuring.. At battery leads one to think the DISCONNECT may be in the DISCONNECT (Store of OFF position) I had that problem too once.. Converter should supply 12 volt power if that happens and you have shore power but if there is a tripped breaker........

Finally.. You said MICROWAVE (And I assume televisions) work.. IF YOU HAVE AN INVERTER... That may be powering TV and Microwave. (off batteries) It will nto be wired in via the disconnect but will go direct to the battery via a fuse.

True Story (And this too is a suggestion) Had a neighbor with electrical trouble. In his case the Televisions did not work (KEY CLUE) Well he opened the compartment where his inverter resides, and there it was. a tripped breaker.. He then went inside to check if the TV worked (it did) his wife asks if I thought I could help, he tells her "he's already fixed it".. I come off looking like a super star. And it's all the fault of forums like thies cause my inverter does not have breakers, it feeds a sub panel (breaker box) so I'd not have thougt to look at the inverter without you folks.. Thank you.

Check breakers on both front of Generator and/or inverter?

If you have a 50 amp service, it"s possible you lost 1 leg of your 50 amp service. the side you lost has your converter, W/D and hot water heater. How do you know the battery is fully charged?

Washer and water heater could be 120 volt issue. Do you have an electric toilet/ Is it 120 AV or 12 volt DC?
Lights and furnace are a 12 volt DC issue.
Do you have an inverter/charger?
If you are connected to shore power, the 12 volt issue is or could be converter. Running genset would be the same as shore power.
If dry camping then yes it could be the battery disconnect. try cycling it off then back on. Is there a master 12 volt disconnect switch near the entrance?

Moved to tech issues.

Sounds like you have lost 12V DC (Furnace, water heater, toilet, lights---------Washing Machine????)

Need to check DC voltage from battery to DC Dist----cut off switch, main feed fuse etc.


If you don't have a converter than ALL DC is supplied by battery bank
If you have a converter......does it have AC IN? What is DC Out?