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Topic: Refrigerator Fans (Read 1761 times) previous topic - next topic

Re: Refrigerator Fans

Reply #20 –
Ended up buying two of the ones JohnM recommended. Reply #19.
jor

Re: Refrigerator Fans

Reply #21 –
I ended up going with the fans from RV Cooling Unit Warehouse (RV Cooling Unit Warehouse). These fans look to be of good quality. The old ones I had did not prevent the fins from frosting over. I'm hoping these will do a better job. From the other responses to this thread, I'm thinking they will do the job. Here's a few photos. The first two compare the old fan with the new. EF2swGLED   Norcold Evaporator Fan Greater inside Cooling LED Deluxe w/Grill and Light   2   $57.90
 
jor

Re: Refrigerator Fans

Reply #22 –
When I had MOT replace the refrigerator with a Norcold, I asked if they would wire the fan inside to move air. I should have done it myself as the fan works great when the refrigerator door is open. So whenever, I decide to fix it; it is the time when using the refrigerator is needed. So it is on the to do list when it becomes necessary to defrost. Shame on me for assuming it would be done right.

Re: Refrigerator Fans

Reply #23 –
Confused... fans come on when door is open? My are on all the time..

Re: Refrigerator Fans

Reply #24 –
Quote from: wolfe10 –
Suspect you are talking about the two muffin fans mounted at the top of the refrigerator condenser exhausting UP.  Controlled by switch over kitchen sink.

Very different than muffin fans on the inside of the refrigerator blowing on the fins to more evenly distribute cooling.

Both have their purpose.
Would like to know what purpose the fans on top of the condenser are, and are they used only at certain times?

Re: Refrigerator Fans

Reply #25 –
I am sure fans can be wired to both come on when door is opened and also to stay on full time.. Assumption is full time would help cool with mixing the air and also keeping the fins from building up..Part time air movement wouldnt do much when the door is opened unless it was on for a few after the door was shut..Circulates the hot air with a more even cooling throughout

Re: Refrigerator Fans

Reply #26 –
Quote from: fouroureye –
Confused... fans come on when door is open? My are on all the time..
They should be on all the time, with an on/off switch. Used to keep ice buildup off the fins. I use one that cost 7 bucks and it works great.

Re: Refrigerator Fans

Reply #27 –
I hung a muffin fan on the front of the fins using a long ty-wrap and wired it to the light supply.  It runs continuously. Before the fins were constantly covered with a thick layer of frosty ice.  Now they stay clean and the fridge temperature stays constant.  It's in a covered building at 96º and is 33º inside running on electric.  Easy upgrade to fridge.

Re: Refrigerator Fans

Reply #28 –
Mike,

Those fans boost air flow over the condenser and therefore help with cooling.

Particularly helpful when cooling in marginal:  High ambient temperatures, sun shining on that side, someone going into the refrigerator frequently, etc.

Re: Refrigerator Fans

Reply #29 –
Quote from: wolfe10 –
Particularly helpful when cooling in marginal:  High ambient temperatures, sun shining on that side, someone going into the refrigerator frequently.
Thanks, Brett. That sentence describes us perfectly, especially the last line; I DO like my Pacifico cold!  ^.^d

Re: Refrigerator Fans

Reply #30 –
The condensor fan(s) should come on and stay on once the thermal switch turns them on, which is shortly after the fridge is powered up and running.  I have on/off switches so I can run one or both of mine.  I normally only run one and turn the second one on when it's extremely hot.

Re: Refrigerator Fans

Reply #31 –
Since all condenser fans were installed after leaving the factory, there are likely a number of ways they could be wired.

I know on Mike's U240 they are on a switch above the sink-- no thermo switch.  Most KISS theory I would do.

Re: Refrigerator Fans

Reply #32 –
If one gets the 12v fan power source from switched side of door light switch, power is turned off when door is closed. Not a good place for power.

Door switch has a constant 12v on the 'other' side of door light switch, which should be used to power fans.

Always consider several inexpensive flat 'muffin' computer fans, with several (many) across the fins, blowing on to the fins. Fans can be held on place with office binder clips. Use thin cable ties to keep fans together and to binder clip.
 

Re: Refrigerator Fans

Reply #33 –
My fan does not blow directly on the fins. Since cold air sinks and hot air rises, I attached the fan to the underside of the top wire shelf and it draws the cold air up. Fins never ice.