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Old 08-01-2012, 06:05 PM   #1
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Refrigerator Check Light

Have trailer hooked up to house AC and refrigerator check light is on with auto button pressed. Fridge seems to be cooling...is this a problem and if so, is there a fix? Thanks.
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Old 08-01-2012, 06:11 PM   #2
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What make and model of fridge ??

The check light will appear on many Dometic models when the gas fails to ignite. But if you have the fridge on electric, then that should not occur.

The only other idea is that the fridge is not getting electric current....either the breaker is thrown, or the fridge is not plugged into the recetacle behind the fridge on the outside of the camper. The fridge does not "see" 120 volts, so it defaults to gas, but that fails to light causing the check light to come on. But if your fridge is cooling, I don't see how that could happen.
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Old 08-01-2012, 06:22 PM   #3
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As an experiment, I unplugged the fridge in the back of the trailer, opened a propane tank, the burner lit to run the fridge off gas, and the check light went out. It only seems to go on when I'm plugged into 120. Does the propane have to be open when you are plugged in for this check light to go out? Perhaps, I don't understand how the system works. Any comments would be valuable, thanks.
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Old 08-01-2012, 06:31 PM   #4
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The "problem" - While plugged into shore power the fridge "ON" but not running on shore power. If Shore power is not available for any reason (to the fridge), it will try to light on propane to save your food.

There are 3 things it could be in order of probability:

1) The AC circuit breaker that powers the outlet that the fridge plugs into has tripped. Turn ALL the breakers OFF; then back on. If that corrects the power problem, the check light should go out.

2) The AC heating element FUSE had blown. It is located behind the exterior fridge cover panel on the outside of the camper (looks like the photo).

3) The "eyebrow" control board has locked up (or failed). Remove ALL power (including DC by pulling the fuse in the power center); wait 2 minutes and reconnect. This should reset the board. If that fails replace: Dinosaur Electronics Home. High quality circuit boards for RV appliances.
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Old 08-01-2012, 07:05 PM   #5
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Thank you for the very detailed and helpful response--I appreciate it--and hopefully it will not come down to replacing the circuit board.
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Old 08-01-2012, 07:38 PM   #6
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I forgot on more thing (should fall under #1)

Check all GFCI outlets. It is possible your fridge is plugged into a GFCI protected outlet downstream from the actual outlet. Press all resets in the camper.
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Old 08-01-2012, 07:53 PM   #7
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Thanks for your help. Also possible that I am having AC ripple voltage from house circuit. I will be taking rig to RV park tomorrow and will plug into a 30A pedestal. If check light does not come on, then the problem is in home outlet.
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Old 08-01-2012, 09:15 PM   #8
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Quote:
Originally Posted by rmdrifter View Post
Thanks for your help. Also possible that I am having AC ripple voltage from house circuit. I will be taking rig to RV park tomorrow and will plug into a 30A pedestal. If check light does not come on, then the problem is in home outlet.
What? What is ripple voltage in regards to line AC?

I understand AC converted to DC then passed over a capacitance filter has some AC ripple on the DC signal. Never heard of the other way around.

Does your TV work in the house?
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Old 08-01-2012, 10:58 PM   #9
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Have you checked your 12 V battery. Even with 110 VAC available the fridge still needs 12V for its control circuit.
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Old 08-02-2012, 01:14 AM   #10
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Whenever we've had our fridge on auto running on gas and plug into shore power the check light flashes until we switch off fridge and turn back on and everything runs a okay.
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