Trillium 4500 fridge power - Fiberglass RV


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Old 07-16-2020, 07:46 AM   #1
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Trillium 4500 fridge power

I have a question regarding the power to operate the refrigerator in my Trillium 4500. Does the Converter switch need to be set to "Trans" when the trailer is hooked up to 120V. Does that mean the fridge is running on 12V. I mean is the Converter stepping the 120V down to 12V?
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Old 07-16-2020, 08:02 AM   #2
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depends on the fridge and converter, is it a 3 way fridge? could be 12v, 120v and propane.
when plugged into shore power, a three way runs from 120v. , 12v if only on batteries, or propane for either. need the model number from the fridge to determine
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Old 07-16-2020, 08:08 AM   #3
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Trillium fridge power

Joe
Can I reply directly from your email or do I have to go to Fibreglass RV?
Did you get my reply? I replied in my email program.
Anyway, It's a 3 way fridge Dometic RM360
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Old 07-16-2020, 09:22 AM   #4
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Vic, I can tell you how the Trillium 4500 with the original (ancient) converter works because I have exactly the same equipment!

When you are plugged into shore power (110 VAC), the converter should be switched to TRANS, i.e., the 12 VDC transformer is powered on. In shore power/TRANS mode, the fridge should be used in 110 VAC mode, NOT 12 VDC mode. The fridge should be used in 12 VDC mode only when towing.

EDIT: Furthermore, when in shore power/TRANS mode, the 12 VDC transformer is only used to power the 12 VDC interior lights and other 12 VDC accessories that might have been added to the trailer.
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Old 07-16-2020, 09:32 AM   #5
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Regarding interior lighting

John
Are you saying there's no interior lighting possible when towing (and connected to the car power)?
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Old 07-16-2020, 09:41 AM   #6
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I am not saying that.

The converter three way toggle switch is for switching DC power between the transformer (labelled TRANS) when shore power is available, and 12 VDC battery (labelled BATT) when shore power is not available. Putting the three way toggle switch in the middle position shuts 12 VDC power off.

120 VAC power is only available when plugged into shore power.
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Old 07-16-2020, 09:43 AM   #7
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Interior lighting in Trillium 4500

Putting it another way: Should the trailer interior lights work when the trailer is hooked up to the car and the Convertor is set on 12V? Because I can't get the interior lights working with the trailer hooked up to the car.
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Old 07-16-2020, 09:54 AM   #8
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OK that's back to your original question. Typically the tow vehicle provides 12 VDC power to the trailer interior circuitry via a 7-pin connector that has a 12 VDC power wire and a ground wire. If you have a 7-pin connector on the trailer that includes a 12 VDC power wire that is actually wired back to tow vehicle 12 VDC power, then the next thing to check is what 12 VDC circuits/accessories in the trailer are connected to it.

EDIT: That's a lot of IFs. I don't use the tow vehicle 7-pin power circuit. I installed a battery in the trailer to power 12 VDC lights inside the trailer.
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Old 07-16-2020, 10:13 AM   #9
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That old original converter charging circuit will ruin a 12 VDC battery. To avoid this problem, I wired the battery so that it is not connected when shore power / TRANS mode / transformer are powered on. The 12 VDC battery is connected only in BATT (battery) mode. I charge the battery using a separate battery charger.
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Old 07-19-2020, 06:40 AM   #10
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Where in Ontario are you? I am in Whitefish, bring it up if you can and we can go over it, email me at macdojd @ cyberbeach. net
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Old 07-19-2020, 07:17 AM   #11
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Thanks Joe

That's a nice offer and very tempting.
Is that the Whitefish near Sudbury?
I'm in Toronto right now but planning to hit the road as soon as I get the trailer ready.
Victor
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Old 07-19-2020, 07:38 AM   #12
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One thing to check is the 120V wiring. On mine, the insulation on the power cord was totally disintegrated. Without removing the upper outside vent, you really couldn't appreciate how bad it really was.

I posted a few pictures on my Trillium page.
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