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11-23-2020, 10:36 AM
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#1
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Member
Join Date: Jul 2020
Location: Wallace
Posts: 41
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Refrigerator Beeps
I think I saw a tread on this issue. When I am not hooked up to shore power my refrigerator beeps once every time the furnace turns on, and other times it may continues to keep beeping until I turn the refrigerator power off and back on. Both furnace and the fridge work good. Just hoping to get a couple thoughts before I have to get more technical, if this is common issue. The batteries are above 12.4v(resting) when this happen and drops to 11.9 or 12v.( Might be the problem). Haven't checked connections or voltage drop on those 2 circuit yet.
__________________
2019 Ford F250 Lariate, 6.7 Diesel
2020 Cougar 22RBSWE
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11-23-2020, 11:32 AM
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#2
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Site Team
Join Date: Mar 2011
Location: Gaylord
Posts: 26,995
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It sounds to me like a voltage drop problem. When the furnace starts, the voltage drops and the refrigerator "beeps an alarm" then as the furnace runs, the voltage returns to normal and the refrigerator resets/continues without interruption.
It's the same as a generator rating: 2000 watts surge/1600 watts operating. Only your battery is not capable of supplying the total surge requirement during furnace startup, so the voltage drops and the refrigerator senses that voltage and beeps a signal that it's going to shut down, but the voltage rises before that happens.
If the furnace and refrigerator are on separate circuits, it's a battery issue in voltage drop with the high demand at furnace initiation. Add another battery or replace the current battery with one that has greater amperage capacity.
If the furnace and refrigerator are on the same fuse circuit or on the same 12 volt wire, you might try running a heavy gauge wire from the power center 12 volt buss bar to the refrigerator connection and measuring the voltage at that point when the furnace starts. If it remains above 12.4 volts and the refrigerator does NOT beep, I'd consider separating the furnace and refrigerator power source.
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John
2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
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11-23-2020, 01:29 PM
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#3
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Senior Member
Join Date: Sep 2020
Location: Jacksonville
Posts: 993
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Quote:
Originally Posted by koda57
I think I saw a tread on this issue. When I am not hooked up to shore power my refrigerator beeps once every time the furnace turns on, and other times it may continues to keep beeping until I turn the refrigerator power off and back on. Both furnace and the fridge work good. Just hoping to get a couple thoughts before I have to get more technical, if this is common issue. The batteries are above 12.4v(resting) when this happen and drops to 11.9 or 12v.( Might be the problem). Haven't checked connections or voltage drop on those 2 circuit yet.
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If not connected to shore power the frig doesn’t work. Unless it is on propane. Mine beeps when not on shore power and is set to elect.
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Bob/Kay
Jacksonville, Nc
2020 Keystone Cougar 5th wheel 29 rks traded now
2021 3761 fl Montana 5th wheel
Pulled with a 2022 F350 King Ranch
Retired LEO after 35 years just enjoying life now.
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11-23-2020, 01:39 PM
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#4
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Senior Member
Join Date: Aug 2017
Location: Rock Island
Posts: 457
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Power should be 12.6+ resting, and up to 13.6 charging. I think you should have the battery checked. If it’s new, add a second battery.
12.4 is 20% below full charge.
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11-23-2020, 02:36 PM
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#5
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Senior Member
Join Date: Dec 2019
Location: Trinidad,TX
Posts: 975
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You need to get your battery load tested.
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Woody
Cedar Creek Lake, Texas
2019 Laredo 290 SRL
2019 Ram 2500, 4x4, Cummins diesel
Andersen hitch
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11-23-2020, 02:41 PM
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#6
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Senior Member
Join Date: Nov 2017
Location: Picacho, Az
Posts: 6,809
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Quote:
Originally Posted by Camping family
If not connected to shore power the frig doesn’t work. Unless it is on propane. Mine beeps when not on shore power and is set to elect.
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Set the fridge to "auto" then you won't have to be switching from gas to elec.
__________________
Full-timed 10+ years
Sold '13 Redwood FB
Traded '13 GMC Denali DRW D/A
Replacement undetermined
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11-24-2020, 06:48 PM
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#7
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Senior Member
Join Date: Aug 2017
Location: Rock Island
Posts: 457
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Just got back to my rv after about 6 weeks and my batteries were 12.8 volts. I keep them disconnected when I’m gone.
That said, your 12.4 does indicate you should have them checked.
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11-24-2020, 09:02 PM
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#8
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Member
Join Date: Jul 2020
Location: Wallace
Posts: 41
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Thank for the input. The Dometic fridge manual said it had to have 11.6v. The voltage I read was on the in-Command not at the fridge. Couldn't check at the fridge, didn't have a meter with me. Need to to put a volt meter in the trailer. Now I have to find the time to look into it. I have a few months before I use the trailer again. I was going to convert to two 6v batteries anyway. It has two 12v Interstate batteries the dealer installed, for the last year. I will post what I find when I get into it.
__________________
2019 Ford F250 Lariate, 6.7 Diesel
2020 Cougar 22RBSWE
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11-25-2020, 08:31 AM
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#9
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Senior Member
Join Date: Nov 2017
Location: Picacho, Az
Posts: 6,809
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Quote:
Originally Posted by koda57
Thank for the input. The Dometic fridge manual said it had to have 11.6v. The voltage I read was on the in-Command not at the fridge. Couldn't check at the fridge, didn't have a meter with me. Need to to put a volt meter in the trailer. Now I have to find the time to look into it. I have a few months before I use the trailer again. I was going to convert to two 6v batteries anyway. It has two 12v Interstate batteries the dealer installed, for the last year. I will post what I find when I get into it.
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If the dealer installed the batteries I'd almost bet they used non deep cycle batteries. If there's CCA, CA or MCA listed on the top of the battery they are not deep cycle batteries. Two 12 volt true deep cycle could go a long way in helping your issue IMHO!
__________________
Full-timed 10+ years
Sold '13 Redwood FB
Traded '13 GMC Denali DRW D/A
Replacement undetermined
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