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Old 09-18-2006, 10:13 PM   #1
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2006 28' International CCD
Hillsborough , California
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fan near fuse box "on" turns on sporadically?

I am a newbie to this forum but I did search the forums here and could not find a post on this topic.

I have a 3 month old 28' International CCD ... great!

So far all seems to be fine (esp. after learning about macerator pumps!).

Our problem: there is a fan in the fuse box area underneath the couch. This week (3 months new/old) it has started turning on at *random* times. We are plugged into 110AC at our house and use this unit as in-law apartment while our 3rd baby girl is arriving. There is no heat issue here as we live in San Francisco (10 miles south) and it is cool weather both day and night. We are not running any appliances other than the refrigerator and certain LV lights at night. And sometimes the gas-fired room heater during the day.

Why would we be hearing a fan kicking on for 3-5 minutes at time if there is no heat build up in the unit or in that particular area (when I pop the fuse box under the couch area open). This sound definitely comes from the fuse box area Ö Iíve walked outside to see if it was coming from the hot water heater compartment up front but that is stone cold and fan sound there. It is inside the trailer.

We did have a spider nest in one of the pipes feeding the gas-fired water heater last week. That poor spider became history when we turned on the water heater switch for the first time last week. Spider caught fire and burned through the thermal fuse. We are waiting on thermal fuse replacement.

However, there is no real power drain (other than the refrigerator), it is cool here day and night, yet the fan under the fuse box is kicking on every 10-15 minutes for 3-5 minutes.

What gives?



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Old 09-18-2006, 11:05 PM   #2
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Boerne, TX / , Evergreen, CO
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You are hearing the convertor (120V->12V) fan running. I have noticed that turning on a bank or two of lights will trigger the fan for the convertor as it is working harder with the increased power draw. Using fewer lights will help, but is not an ideal solution. Is the fan really loud? Maybe you can change it out for a quieter computer style fan. I'm sure others will have more suggestions soon.

Chris and Christina- Boerne, TX / Evergreen, CO - TAC TX-7
2008 27'FB Int'l Signature CCD
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Old 09-19-2006, 05:40 AM   #3
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Ours does the same thing.
SuEllyn & Brian McCabe
WBCCI #3628 -- AIR #14872 -- TAC #FL-7
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Old 09-19-2006, 07:03 AM   #4
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Willoughby , Ohio
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Aaron - Ours does the same thing - any time there is a 12 volt drain (lights, fantastic fans, bath/shower vents, battery charge, radio, etc.) the power inverter is working and the fan cools it. Fridge is either propane or AC current and shouldn't cause this. Be sure not to block those vent louvers!

What color scheme did you get on your DDC? We have the orange and LOVE it! Visitors to our trailer in various parks are envious!

Have you towed it anywhere yet?

Best of luck -

Steve & Susan
WBCCI# 03876
AIR# 6511
2005 28' CCD, 2011 Sierra 5.3L, Equal-I-Zer
Empty Nesters - spending our money on OURSELVES for a change!
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Old 09-19-2006, 08:52 AM   #5
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Agree, it's the converter, and you DO have power drain...the battery loses a little voltage all the time, the fridge has a 12vdc thermo (I think), your control panel has a trickle or two (even the battery meter drains a bit). Actually, the real clue is your statement that you use certain "LV" lights. I think you mean Low Voltage, and hence they drain the battery or use voltage off of the converter. This is just normal everyday occurences in your Airstream.

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