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Old 08-21-2016, 03:25 PM   #43
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2014 23' FB Flying Cloud
Park City , Utah
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Originally Posted by Streaminfree View Post
May sound stupid, but do you know how to turn on the furnace, when I select hp on thermostat I get e7 error.
E7 means no power to the trailer--which there isnt since you aren't plugged in to shore power. The AC and HP will NOT run on just the batteries, which is why you will get and E7 code if the thermostat is set to HP (heat pump) or AC. You need to scroll through the 'Mode' setting on the themostat and select "Furnace". This will then kick on the furnace running on 12v and propane. Make sure of course that your batteries are not in "store" mode.

The furnace WILL drain the batteries relatively quickly, so use sparingly. Then use your generator to top up the batteries.

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Old 08-21-2016, 08:53 PM   #44
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I was told and I have been using 40 above use HEAT PUMP. Otherwise use the FURNACE.

I tend to use the FURNACE it is quieter.

FURNACE uses Propane.

HEAT PUMP uses electricity.

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Old 08-22-2016, 04:53 AM   #45
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2016 30' Flying Cloud
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Originally Posted by lewster View Post
12.3VDC is close to 30% depth of discharge for some liquid cell batteries (50% is actually 12.2VDC for AGM batteries and 12.06VDC for many liquid cells) and 9.8VDC is effectively DEAD for a lead-based battery!! (these values heavily depend on the battery chemistry and manufacturer and you should always confirm these levels with the OEM of the batteries that you are using)

If you want your batteries to last more than a season or two, you should avoid drawing your batteries below 50% on a regular basis. Keep drawing them below 11.5VDC and they won't serve you very long.

Thanks, I was wondering what the threshold was. Definitely need to get some solar then to make this system work for cold weather boondocking.
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Old 08-22-2016, 06:48 AM   #46
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The propane furnace fan is 12 volt.
You can use your furnace.
How long depends on type of batteries.
Solar would be a nice accessory in this scenario.
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Old 08-24-2016, 07:43 PM   #47
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get a catalytic heater....we have one for boon docking times....use it frequently....keep a couple windows open about a half inch to keep air flow going. Bought it in Scottsdale and have never regretted it.
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Old 08-24-2016, 08:43 PM   #48
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Originally Posted by cazual6 View Post
I was told and I have been using 40 above use HEAT PUMP. Otherwise use the FURNACE.

I tend to use the FURNACE it is quieter.

FURNACE uses Propane.

HEAT PUMP uses electricity.
We always use the furnace, never the heat pump even when on shore power. AC/Heat pump is way too loud in the middle of the night when you are trying to sleep... furnace is quiet relatively speaking...

When boondocking, with 2 group 27 lifelines, on a cold night we'll draw down about 20% of the battery capacity using the furnace. Tops right back up the next day with 480 watts of solar
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Old 08-30-2016, 03:54 PM   #49
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Originally Posted by Streaminfree View Post
Anyone have any ideas, I know we have an AC system that does heat, but that gives an e7 error, but I thought we had a heat pad option.

Any advice would be awesome!
I have run into the E7 error many times. E7 error means you do not have power. Check your electrical box and flip the switch. You are probably overloaded or taxing the 30 / 50 amp. Flip it off then on again. If you get it again, then start turning other things off, like microwave, water heater, etc.

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