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Topic: Replacing Kool-matic with Fantastic Fan (Read 1434 times) previous topic - next topic

Replacing Kool-matic with Fantastic Fan

I've run into an unexpected problem while changing out my kitchen Kool-matic fan with a Fantastic Fan.  Before installing the new fan, I connected the two positive leads to the black wire on new fan and white to negative and it doesn't work.  Old fan did not work either while mounted.  I bench tested both fans against a car battery, using test leads and they both worked fine.  All the fuses under the bed are  good and the "salesman switch" was on.  I tried different combinations with the wiring and did adjust  both thermostats (the Fantastic Fan as well as the Kool matic) to no effect.  I'm guessing that the old thermostat or the wiring to it is the problem.  Has anyone else encountered this problem?  I'd like to by-pass the old thermostat, but was hoping others might have encountered this issue.    If I do the by-pass, I would need to get to the wiring behind the thermostat.  I'd like to avoid removing the microwave.  I have a mid entry with Kool-matic thermostat mounted on upper cabinet adjacent to the door next to the microwave.  I appreciate any  help.
2000 U320 mid entry  #5688
2006 Jeep Liberty


USMCR retired
SDFD retired
FEMA US&R TF8

Re: Replacing Kool-matic with Fantastic Fan

Reply #1
 I don't know about the fans, but on the clearance/marker lights, white is +12 VDC; black is ground. Other places, green is ground and white is +12 VDC (but maybe not everywhere?).
 
Trent
Trent and Jean Eyler
2000  U295  4003  WTFE  ISC  350
Build#5603 MC#17385

Re: Replacing Kool-matic with Fantastic Fan

Reply #2
What are you doing with the Kool o Matic?
Larry
1996 U295 36'
Build # 4805
Actually we sold it but just like to lurk

Re: Replacing Kool-matic with Fantastic Fan

Reply #3
I checked the voltage using my multi meter and wasn't getting anything.  Regarding the Kool-matic, I don't have any plan for it.
2000 U320 mid entry  #5688
2006 Jeep Liberty


USMCR retired
SDFD retired
FEMA US&R TF8

Re: Replacing Kool-matic with Fantastic Fan

Reply #4
If Larry passes i would be intersted in your old Kool O matic,for a spare.
91 GV U300 Unihome 40' Build 3811
6V92TA Detroit

Re: Replacing Kool-matic with Fantastic Fan

Reply #5
X3! I'm always looking for Kool-o-Matic parts! Good luck w/ yer Vent.
Paul & Kathleen
1995 U320c SE 40'
Build 4681 --Cummins M11 /17511
"That Irish Girl"
Red MINI " 40"

Re: Replacing Kool-matic with Fantastic Fan

Reply #6
If I do the by-pass, I would need to get to the wiring behind the thermostat.  I'd like to avoid removing the microwave.
You don't have 12 volt in the wires going to the old thermostat (you did verify that, right?).  You've checked all the usual suspects (fuses, etc).  You don't need the old thermostat.  Removing the microwave is a BIG PITA.  My instinctual response to that situation would be to remove the old thermostat, cover up the hole, and run a new 12 volt cable to the new fan from some nearby 12 volt source.  You might have to get creative with the routing of the new wire, but you should be able to keep it out of sight.  After watching two experienced remodel techs at FOT struggle for over an hour replacing our old unit, I'd rather get a root canal than R&R the microwave...but that's just me.
1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"

Re: Replacing Kool-matic with Fantastic Fan

Reply #7
I will check the DC breakers in the basement.  As for 12v getting to the old thermostat, how would I check that without getting access to the wires from behind (reason for removing the microwave.  I'm fine with bypassing the thermostat, since I have one in the new fan, but locating a DC wire and splicing into the circuit can be a big problem; I haven't seen many wires with  some slack.
2000 U320 mid entry  #5688
2006 Jeep Liberty


USMCR retired
SDFD retired
FEMA US&R TF8

Re: Replacing Kool-matic with Fantastic Fan

Reply #8
I will check the DC breakers in the basement.  As for 12v getting to the old thermostat, how would I check that without getting access to the wires from behind (reason for removing the microwave.  I'm fine with bypassing the thermostat, since I have one in the new fan, but locating a DC wire and splicing into the circuit can be a big problem; I haven't seen many wires with  some slack.
Take the thermostat cover off. The wires must be accessible  in order to change out the thermostat without having to remove the microwave. Check the voltage at the terminals
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Replacing Kool-matic with Fantastic Fan

Reply #9
Sven,

You must have a rare coach!  I don't see a mid-entry U320 listed in the 2000 model year floor plans at beamalarm.com.  Congratulations!

I assume your Kool-O-Matic fan is/was located in the kitchen area, probably above your stove and microwave.  I went out and looked at our coach, which has that same general configuration.  If I needed a new 12 volt power lead to go the the kitchen vent fan cutout, I would take it off the hot wire and ground wire feeding the 12 volt light directly over the kitchen sink.  The double wire could run through the overhead cabinets until directly in line with the fan cutout.  You could drill a hole in the side of the fan cutout, horizontally through the ceiling foam, until you are above the cabinet ceiling.  That would only be about 4-5 inches in our coach.  Then punch straight up through the cabinet ceiling to intercept this hole.  Run your power/ground wire up into the cabinet ceiling hole and over until it comes out the side of the fan cutout.  Then hook up to the new fan.

Takes me longer to describe than it would take to do.  To tap into the hot and ground wires at the light fixture, you might be tempted to use a "vampire" crimp-on splicing connection.  See photo below.  I know I have used these things for years on cars and motorcycles, had pretty good luck with them, and thought they were great.  I have recently been introduced to a better solution:  the Posi-Tap.  Posi-Tap- No Crimp Tap
OR, you could use "Old School" solder and heat-shrink tubing...your choice.

http://www.youtube.com/watch?v=N64p6ndlTQ8
1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"

Re: Replacing Kool-matic with Fantastic Fan

Reply #10
I don't want the Kool o Matic, I was just interested. Didn't want it thrown away but I have a spare in storage. Have at it guys  ^.^d
Larry
1996 U295 36'
Build # 4805
Actually we sold it but just like to lurk

Re: Replacing Kool-matic with Fantastic Fan

Reply #11
I will check the DC breakers in the basement.  As for 12v getting to the old thermostat, how would I check that without getting access to the wires from behind (reason for removing the microwave.  I'm fine with bypassing the thermostat, since I have one in the new fan, but locating a DC wire and splicing into the circuit can be a big problem; I haven't seen many wires with  some slack.

As we have a center entry I wonder if your coach has a ce number is on the sidewall like ours has?
"Riding and rejoicing"
Bob
1997 U320 40' Mid entry, build 5132,  wtbi ce27, 4th owner
2007 Solara convertible
2 prodeco tech outlaw ss electric bikes

1095 watts solar
08 Ls 460 and a sc430
2000 Ford F-250 superduty 4x4

Re: Replacing Kool-matic with Fantastic Fan

Reply #12
That Kool matic draws a ton more than the typical 3 speed bathroom fan(name escapes me). My koolmatic still works including thermostat. I have had to do some plastic surgery on inside cover
Every day is a gift
Bob and Pat
2000 36 U295 cummins 350hp
Coach has been sold thanks to MOT 11/2016

Re: Replacing Kool-matic with Fantastic Fan

Reply #13
Assume Kool O Matic power is fuse protected in the 12-volt fuse panel on the front of the bed.

Re: Replacing Kool-matic with Fantastic Fan

Reply #14
Fantastic fan?
"Riding and rejoicing"
Bob
1997 U320 40' Mid entry, build 5132,  wtbi ce27, 4th owner
2007 Solara convertible
2 prodeco tech outlaw ss electric bikes

1095 watts solar
08 Ls 460 and a sc430
2000 Ford F-250 superduty 4x4


Re: Replacing Kool-matic with Fantastic Fan

Reply #16
As we have a center entry I wonder if your coach has a ce number is on the sidewall like ours has?
I'm not familiar with a "ce number".
2000 U320 mid entry  #5688
2006 Jeep Liberty


USMCR retired
SDFD retired
FEMA US&R TF8

Re: Replacing Kool-matic with Fantastic Fan

Reply #17
Sven,

You must have a rare coach!  I don't see a mid-entry U320 listed in the 2000 model year floor plans at beamalarm.com.  Congratulations!

I assume your Kool-O-Matic fan is/was located in the kitchen area, probably above your stove and microwave.  I went out and looked at our coach, which has that same general configuration.  If I needed a new 12 volt power lead to go the the kitchen vent fan cutout, I would take it off the hot wire and ground wire feeding the 12 volt light directly over the kitchen sink.  The double wire could run through the overhead cabinets until directly in line with the fan cutout.  You could drill a hole in the side of the fan cutout, horizontally through the ceiling foam, until you are above the cabinet ceiling.  That would only be about 4-5 inches in our coach.  Then punch straight up through the cabinet ceiling to intercept this hole.  Run your power/ground wire up into the cabinet ceiling hole and over until it comes out the side of the fan cutout.  Then hook up to the new fan.

Takes me longer to describe than it would take to do.  To tap into the hot and ground wires at the light fixture, you might be tempted to use a "vampire" crimp-on splicing connection.  See photo below.  I know I have used these things for years on cars and motorcycles, had pretty good luck with them, and thought they were great.  I have recently been introduced to a better solution:  the Posi-Tap.  Posi-Tap- No Crimp Tap
OR, you could use "Old School" solder and heat-shrink tubing...your choice.

http://www.youtube.com/watch?v=N64p6ndlTQ8
The posi-tap is new to me, but looks like a great product.  It solves the issue of not being able to pull enough slack to do a solder splice.  The problem with connecting to an existing kitchen light wire is that it would be on the same switch the light is on (fan would work as long as the light is on).
Take the thermostat cover off. The wires must be accessible  in order to change out the thermostat without having to remove the microwave. Check the voltage at the terminals
I will check this again.  My problem is having enough slack in the wire to connect to a new thermostat.  It would be the first choice (assuming the problem  is the thermostat), since it would cover the old holes.
2000 U320 mid entry  #5688
2006 Jeep Liberty


USMCR retired
SDFD retired
FEMA US&R TF8

Re: Replacing Kool-matic with Fantastic Fan

Reply #18
Out of curiosity, how do you prevent heat/cooling loss with the Kool-matic?  The Fantastic vent has a lid that can be closed and they make square pillows that can be placed into the opening when it isn't being  used.
2000 U320 mid entry  #5688
2006 Jeep Liberty


USMCR retired
SDFD retired
FEMA US&R TF8

Re: Replacing Kool-matic with Fantastic Fan

Reply #19
Out of curiosity, how do you prevent heat/cooling loss with the Kool-matic?  The Fantastic vent has a lid that can be closed and they make square pillows that can be placed into the opening when it isn't being  used.

Shutters and plastic cover
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Replacing Kool-matic with Fantastic Fan

Reply #20
Out of curiosity, how do you prevent heat/cooling loss with the Kool-matic?
A plastic cover was supplied that slides into tracks on the louvered face plate.  These covers are now getting VERY brittle due to age, and if you still have one, you must be extremely gentle when installing and removing it.  Ours is still intact (knock on wood).

Photo taken before we replaced the fridge and microwave.
1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"

Re: Replacing Kool-matic with Fantastic Fan

Reply #21
A plastic cover was supplied that slides into tracks on the louvered face plate.  These covers are now getting VERY brittle due to age, and if you still have one, you must be extremely gentle when installing and removing it.  Ours is still intact (knock on wood).

Photo taken before we replaced the fridge and microwave.
Ours is metal, is noisy and doesn't look like it belongs in an RV.
2000 U320 mid entry  #5688
2006 Jeep Liberty


USMCR retired
SDFD retired
FEMA US&R TF8

Re: Replacing Kool-matic with Fantastic Fan

Reply #22

On our coaches sidewall next to the drivers seat is the VIN number and on the next line below it the Foretravel identification numbers.

In our coach's string of identifying letters and numbers I came across the CE 27 part.

My understanding is that is Foretravels numbering for how many center entry coaches have been made.

Just wondering if they had continued that with your coach?
"Riding and rejoicing"
Bob
1997 U320 40' Mid entry, build 5132,  wtbi ce27, 4th owner
2007 Solara convertible
2 prodeco tech outlaw ss electric bikes

1095 watts solar
08 Ls 460 and a sc430
2000 Ford F-250 superduty 4x4

Re: Replacing Kool-matic with Fantastic Fan

Reply #23
I thought it was an engine/transmission code.
 
Trent
Trent and Jean Eyler
2000  U295  4003  WTFE  ISC  350
Build#5603 MC#17385

Re: Replacing Kool-matic with Fantastic Fan

Reply #24
In our coach's string of identifying letters and numbers I came across the CE 27 part.
My understanding is that is Foretravels numbering for how many center entry coaches have been made.
Where does the "CE 27" occur in your model number?

Reading the Vehicle Identification Number
1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"