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Topic: sounds like fan is running in Hydro Hot area (Read 495 times) previous topic - next topic

sounds like fan is running in Hydro Hot area

I am recent to the Foretravel family and I have found most switches to turn things off but I have a problem that when everything is off I still have a noise that sounds like a fan running in the front Bay area near the Hydroheat. I thought it may be the inverter but its not. I have a 1997 320 40 ft. The only way to stop is to disconnect every coach battery. I am concerned that leaving this on will drain and kill the new batteries. I switched off the 12v switch and turn everything I can see off to no avail. Do any of you have any ideas? I hate the thought of having to do that every time I send to storage. I hope someone has an idea
Ronnie and Jennifer
1997 U320 4000
San Antonio Texas
Dreaming of the day we can fulltime

Re: sounds like fan is running in Hydro Hot area

Reply #1 –
Probably the 12v aux compressor that keeps the coach level.  If it is running all the time or most of the time there is a big air leak.  You have to find the compressor and pull a fuse or put a switch in the power line. 
Roger Engdahl and Susan Green
2001 U320 3610 #5879 (Home2) - 2014 Jeep Cherokee or 2018 F150
Hastings, MN

Re: sounds like fan is running in Hydro Hot area

Reply #2 –
Ron,

One other thing you need to check is the thermostat in the basement that controls the basement heat. This should be located on the wall in the compartment in front of the right rear tires.  If it is on it could be calling for the center circulating pump to run in you Aquahot unit.

Pamela & Mike
Pamela & Mike 97 U 320

"It's not what happens to you, but how you react to it that matters."

Re: sounds like fan is running in Hydro Hot area

Reply #3 –
You should have a basement fan to exhaust the heat in the basement. That is 12 volt and is on a thermostat.
2025 Wanderbox Outpost 32 on F600 Expedition Motorhome
2015 Born Free Royal Splendor on Ford 550 nonslide version  for sale
Former Coaches  covering. 360,000 miles
1999 34 U270
2000 36 U320
2001 42' double slide U320
2018 Jeep Rubicon

Re: sounds like fan is running in Hydro Hot area

Reply #4 –
There is no factory installed basement fan. Where are you located when the noise is heard. If you can hear the noise without climbing into the bay it probably is the inverter/charger cooling fan. The AquaHot circulating pumps are very quiet and difficult to hear without removing covers. Operate the bathroom thermostat and have someone listen for a change.
The selected media item is not currently available.Bob & Faith Rozek
1997 U320 40'
Xtreme Remodel
2010 Scion XD

Re: sounds like fan is running in Hydro Hot area

Reply #5 –
There is a 12 volt air compressor mounted behind the inverter against the ceiling
"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: sounds like fan is running in Hydro Hot area

Reply #6 –
Quote from: flite2010 –
There is no factory installed basement fan. Where are you located when the noise is heard. If you can hear the noise without climbing into the bay it probably is the inverter/charger cooling fan. The AquaHot circulating pumps are very quiet and difficult to hear without removing covers. Operate the bathroom thermostat and have someone listen for a change.

I have had a factory installed fan in my last two coaches, both a 2000 and 01. It is for the entire bay and usually in the same bay as the inverter. I know in later models they made a whole bay for the electronics too.
2025 Wanderbox Outpost 32 on F600 Expedition Motorhome
2015 Born Free Royal Splendor on Ford 550 nonslide version  for sale
Former Coaches  covering. 360,000 miles
1999 34 U270
2000 36 U320
2001 42' double slide U320
2018 Jeep Rubicon

Re: sounds like fan is running in Hydro Hot area

Reply #7 –
Not to get off topic from the original post but on a '97 coach it has 2 vent tubes that are to vent the coach battery compartment but no fans. The cooling vent fans were added to later years, although one could have been added by a PO. The inverter/converter had it's own cooling fan  as has been mentioned.

Pamela & Mike
Pamela & Mike 97 U 320

"It's not what happens to you, but how you react to it that matters."
 

Re: sounds like fan is running in Hydro Hot area

Reply #8 –
Thanks all. I will be taking a look at these items when I get the coach ready for a trip this weekend. I don't think its the aux compressor but at this point I need to recheck everything.
Ill keep all posted
Ronnie and Jennifer
1997 U320 4000
San Antonio Texas
Dreaming of the day we can fulltime