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10-11-2020, 02:32 PM
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#21
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Seasoned Camper
Join Date: Nov 2019
Location: Estacada
Posts: 77
M.O.C. #25265
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Quote:
Originally Posted by whiterose
I check mine with the Progressive Industries surge protector. When you flip the switches you will see the amp draw increase.
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I was wondering if you can check for a voltage drop at the battery with a multimeter and shore power off when you flip the switch? ✌🏻️
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10-11-2020, 03:12 PM
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#22
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Montana Master
Join Date: Dec 2007
Location: Kansas City, Missouri
Posts: 2,637
M.O.C. #7992
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Remember the parameters for when the tank heaters kick in. And that is the temperature at the tank not the air temp.
__________________
2006 3000RK
2009 Ram 2500
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10-11-2020, 04:04 PM
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#23
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Established Member
Join Date: Mar 2020
Location: Palestine
Posts: 38
M.O.C. #25900
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Check the temperature of your water then turn the heat on and in a white check the water temp again.
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10-12-2020, 08:55 PM
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#24
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Site Team
Join Date: Apr 2017
Location: Colorado Rockies
Posts: 1,710
M.O.C. #19755
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I doubt voltage drop would be a reliable indicator; monitoring current would probably work. My switches are not lighted. The heaters do have a thermostat, but I don't know where it kick in.
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Scott & Alta
2017 Montana 3160RL, Legacy, Onan 5.5Kw, Solar
2022 F-450 Lariat Ultimate
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10-13-2020, 07:33 AM
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#25
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Montana Master
Join Date: May 2019
Location: Alton
Posts: 2,232
M.O.C. #24086
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Therma Heat SL-T1218
on at 45°F off at 65°F
Input voltage: 13.5V DC
Power draw: 4.8 amps
Wattage: 65 watts
https://www.etrailer.com/RV-Fresh-Wa...77-000164.html
__________________
Daryl and Marianne,
2019 3130re 20th Anniversary Edition
2016 F350 Lariat
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10-13-2020, 08:05 AM
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#26
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Montana Master
Join Date: May 2011
Location: Hixson
Posts: 3,436
M.O.C. #11397
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Go outside and tinker around a few minutes while making a little noise. Tell her they appear to be working and let her prove otherwise. We made it a very long time without tank heaters.
__________________
2018.5 Montana 3791RD
Full Timers 9/1/2010 through 1/16/2020.
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10-13-2020, 08:39 AM
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#27
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Montana Fan
Join Date: Mar 2020
Location: Fort Edward
Posts: 112
M.O.C. #25910
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I think I’ve solved the problem .
I made her stand at the switch panel and hold the battery test switch on as I turned each heater switch on one at a time. Each time I did the battery lites would go out showing a drain on the battery.
Job done.
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10-14-2020, 05:25 AM
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#28
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Montana Master
Join Date: Oct 2017
Location: Bastrop
Posts: 2,837
M.O.C. #20753
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Just wait until she figures out the CO monitor needs testing
__________________
Mocha, one -eyed toothless, hurricane survivor, Pirate dog
2019 20th Anniversary Edition 3701LK
B&W 20K for Ford OEM Puck
2018 Ford F-350 Lariat CCLB PSD DRW
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10-14-2020, 09:48 AM
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#29
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Seasoned Camper
Join Date: Sep 2020
Location: Artesia
Posts: 62
M.O.C. #27061
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That’s just funny!
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10-14-2020, 10:37 AM
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#30
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Montana Fan
Join Date: Mar 2020
Location: Fort Edward
Posts: 112
M.O.C. #25910
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Bite your tongue. Lol
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10-14-2020, 11:41 AM
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#31
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Site Team
Join Date: Apr 2017
Location: Colorado Rockies
Posts: 1,710
M.O.C. #19755
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Quote:
Originally Posted by jeffba
Just wait until she figures out the CO monitor needs testing
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Or the fire extinguisher
__________________
Scott & Alta
2017 Montana 3160RL, Legacy, Onan 5.5Kw, Solar
2022 F-450 Lariat Ultimate
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10-14-2020, 07:38 PM
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#32
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Montana Master
Join Date: Jan 2018
Location: Northville, NY
Posts: 760
M.O.C. #21158
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I don't use our pad heaters when we're set up. The furnace keeps the pipes and tanks warm enough. I have kept a remote thermometer down there and it never gets below 60 when it's cold out and the furnace is running. Since they are 12v. a lot of folks use them when they are traveling in very cold weather just as a safety measure. The TV will keep the batteries up.
__________________
Jim B
2017 Lariat F-350 FX4, CC, SB, 6.7 PSD 4WD
2018 MONTY 3731FL, at our private winter site in GA
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02-18-2021, 12:15 PM
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#33
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New Member
Join Date: Feb 2021
Location: Tomball
Posts: 1
M.O.C. #28186
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Hi! We are full-timing and currently outside of Houston. We have a 2016 KEYSTONE MONTANA 3950BR. We are living through the epic winter freeze down here and without power to the rv for three days with below freezing temps at night. We did not turn on the tanks heaters. Our two grey water tanks are empty and fresh water is about 1/4 full. Now our black water tank is FULL. Husband feels sure that the valve to empty tank is frozen. Not sure about the condition of the sewer hose. We always leave the grey water tanks empty (separate valve and always open except when dumping black water). With that being said, would it do me any good to turn on the tank heaters (which are not marked) to heat the black water tank. Hubby doesn't want me to pull on that valve and possibly break it....that would be a disaster! Black water showing FULL and grey waters showing EMPTY. I pray I have made 'sense'. Help a little old lady out and keep me out of trouble with hubby!!! Thanks!
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02-18-2021, 01:08 PM
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#34
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Montana Master
Join Date: Oct 2019
Location: Jacksonville
Posts: 1,873
M.O.C. #25165
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It is unlikely that the tank heater will thaw the frozen valve as they don't get that warm. Run your furnace and if you can, run a small electric heater near the outlet outside to try to break the frozen valve loose. Gently pull on the valve occasionally to check, but DO NOT force it. It can easily break the cable or worse, the pipe.
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Robert & Diana McNeal
2019 Montana Legacy 3791RD 20th Anniversary Edition
2014 F350 4x4 6.7L SRW
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03-08-2021, 10:17 AM
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#35
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Montana Fan
Join Date: Dec 2015
Location: Nokomis
Posts: 464
M.O.C. #18144
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I have 3 heaters and 4 tanks, can anyone tell me which tanks are actually heated?
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Ed
2016 Montana 3950 BR
2004 Montana 3650 RK
2019 Ram 3500 SRW Laramie CTD 6.7
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03-09-2021, 04:29 AM
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#36
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Montana Master
Join Date: Oct 2019
Location: Jacksonville
Posts: 1,873
M.O.C. #25165
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Kozzy, I believe all of them are heated. The switches on mine are for fresh, black and gray. I have 2 gray tanks, but only 1 switch so the heaters on both gray tanks are on the same switch.
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Robert & Diana McNeal
2019 Montana Legacy 3791RD 20th Anniversary Edition
2014 F350 4x4 6.7L SRW
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03-09-2021, 08:00 AM
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#37
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Montana Master
Join Date: Aug 2004
Location: Livermore
Posts: 4,992
M.O.C. #1920
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Jeanne, if you have been running your furnace, you shouldn’t have a problem. Most people keep their grey water tanks with some in there to flush after dumping the black tank.
__________________
Ron and Terrie Ames - MOC #1920
2021Montana 3230CK Super Solar Legacy Package
2021 Ram 3500 Laramie Longhorn, BIM Charging
4x4, SRW, LB, Crew Cab, Pullrite 3900 Hitch
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03-09-2021, 01:12 PM
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#38
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Established Member
Join Date: Jun 2019
Location: Albertville
Posts: 39
M.O.C. #24262
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If your tank has had the heaters on a few days with liquid in them. Dump em and feel the hose as it dumps is it warm or cold
__________________

Living the 5W Life
2020 3701LK
2017 Ram 3500
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03-09-2021, 03:55 PM
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#39
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Seasoned Camper
Join Date: Feb 2021
Location: Portland
Posts: 68
M.O.C. #28145
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you can run the tank heaters when going down the road right? cause they run off the 12 volt system? can someone confirm...
__________________

2021 Montana 3854BR with 2014 Ram 3500 SRW Limited CC LB, 2021 Malibu 23 LSV, 2019 Can AM XRS turbo, 2017 Yamaha YXZ 1000R
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03-09-2021, 04:13 PM
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#40
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Site Team
Join Date: Sep 2017
Location: Oro Valley
Posts: 3,605
M.O.C. #20477
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Quote:
Originally Posted by nellie1289
you can run the tank heaters when going down the road right? cause they run off the 12 volt system? can someone confirm...
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Matt,
Yes, they are 12 volt.
__________________
Zack and Donna plus Millie and Ranger
2018 3160RL
"Life is too short to stay indoors, enjoy the ride!"
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