Dometic fridge fans

[NWILSON]

The lens just slides off. You will see the wire attaching near the base of the bulb. With power off you can easily pry the wire off with a small screwdriver or grasp and pull gently with needle nose pliers.

 

[Bobby A]

Very interesting topic guys, I would love to help my fridg cool better. Has anyone installed one of these that you all are talking about on a RM3962 model fridg ??

 

[NWILSON]

Here are some pics of the installation:

There is a "piggyback" connector that comes with the kit. Just clip the red wire to the proper length and crimp the connector to it. The power lead to the light switch is then attached to the "piggyback" and the "piggyback" is connected to the switch. ( Don't substitute my simplified directions for the manufacturer's supplied instructions!)

 

[JohnDar]

Thanks for the photos. I've got the fan assembly, so next week I'll be installing it in our DM2862.

 

[sgtbigb]

Thanks for the photos, however the lite is different in the RM 1350

 

[wesley1963]

Thanks for the photos, however the lite is different in the RM 1350

Hey Gene,
I installed one on a 1350. The lens on ours has a simple tab on the bottom of the lens that squeezes upward and the lens pops off.

 

[sgtbigb]

I got the lens off. but is at a lose to how to remove the housing from its position to get to the wiring!

 

[For20hunter]

Has anyone used these fans on the Norcold side by side refridgerator and if so how did it work? Did it make as big of a cooling difference as it does on the Dometics?

Rod Ditrich

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[wesley1963]

I got the lens off. but is at a lose to how to remove the housing from its position to get to the wiring!

There's no need to get to the wiring. Just remove the bulb and hold the fan wire against the rear bulb contact and reinstall the bulb.

 

[danemayer]

Has anyone used these fans on the Norcold side by side refridgerator and if so how did it work? Did it make as big of a cooling difference as it does on the Dometics?

Rod Ditrich

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Rod,

The improvement comes from better circulation of cold air air inside the frig, so it should help any make/model, assuming it fits on the fins and you can tap off the light bulb or other voltage source. It's inexpensive enough to take a risk. If it doesn't fit, I'm sure you there'd be someone at an upcoming rally who would love to take it off your hands.

 

[mrcomer]

There's no need to get to the wiring. Just remove the bulb and hold the fan wire against the rear bulb contact and reinstall the bulb.

While this will work, it will only work when the door is open and the light turns on. The fans really need to run when the door is shut for better circulation.

 

[danemayer]

While this will work, it will only work when the door is open and the light turns on. The fans really need to run when the door is shut for better circulation.

Mark,

Are you sure the back of the bulb doesn't have constant voltage?

 

[mrcomer]

Typically there is no "hot" wire on a fixture (bulb), usually the "hot" is at the switch. Try putting a meter on that side of the bulb and ground to the fins of the refer and see what happens.

 

[danemayer]

If you take a reading with the door open, it's hot. If you take a reading with the door closed....well, that's the same problem as checking to see if the light really goes out when the door closes.

I was having trouble with the light 18 months ago and looked at the schematic. It was not completely clear to me how the light circuit works (connections p6 and p7?), but I think there's voltage on one terminal of the lamp and the door switches provide a path to ground. If there's someone out there who is better at reading the attached schematic, I'd love to hear what you think.

 

[Willym]

The schematic does show the door switches as providing a ground path for the lamp. i.e the lamp should be at +12v all the time. The switches also provide a ground input to the control board (via P7) for what reason, I do not know. Maybe it initiates the cooling circuit whenever the door is open in anticipation of the increased heat load.

If you take a reading with the door open, it's hot. If you take a reading with the door closed....well, that's the same problem as checking to see if the light really goes out when the door closes.

I was having trouble with the light 18 months ago and looked at the schematic. It was not completely clear to me how the light circuit works (connections p6 and p7?), but I think there's voltage on one terminal of the lamp and the door switches provide a path to ground. If there's someone out there who is better at reading the attached schematic, I'd love to hear what you think.

 

[porthole]

The way I read that schematic is P6 is supplying + to the bulb.
There are two switches (why?). When the switch closes the the bulb is grounded and lights.

Why P7? My guess is a signal to the circuit board. Perhaps to activate the fan when the door closes - that feature where the system pulls the door tight initially.

 

[danemayer]

I assume one switch for each door. Either switch closes the circuit.

 

[For20hunter]

Good point Dan. I will order it now.

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[porthole]

I assume one switch for each door. Either switch closes the circuit.

Makes sense, wasn't thinking 2 doors - not having a 2 door refer ..................

 

[mrcomer]

Thanks for clearing thisup. I never would have believed that one side of the bulb was hot. Oh well, that's how it goes. Makes wiring the fans that much easier.