Basement vent fan.

Topic: Basement vent fan. (Read 903 times) previous topic - next topic

Basement vent fan.

April 14, 2017, 09:27:43 pm

Is the vent fan in the basement adjustable? Either fan speed or temp control. We r dry camping and this stinken fan keeps blowing.

85F outside, bay door open,. 92F at the heat sensor box.

Very tempted to temp. Disable the fan. Guess I could install a switch.

Thanx. 😃

Re: Basement vent fan.

Reply #1 – April 14, 2017, 09:37:50 pm

Quote from: Carol & Scott – April 14, 2017, 09:27:43 pm

Is the vent fan in the basement adjustable? Either fan speed or temp control. We r dry camping and this stinken fan keeps blowing.

Is this the one in the bay with the electronics and HWH controls? I would hesitate to disable it lest those components get over temperature and have other issues.

Re: Basement vent fan.

Reply #2 – April 14, 2017, 10:23:29 pm

Yeah - I know. The sound is driving me crazy and it's burning power. Argh.

My guess it's a bad sensor.

Sensor temp is 83F. Should be off, I would think.

Re: Basement vent fan.

Reply #3 – April 14, 2017, 10:24:13 pm

I'd look at the temp sensor, seems like 95° is pretty early for it to come on. Maybe a call to FT ?

Re: Basement vent fan.

Reply #4 – April 14, 2017, 10:25:19 pm

Maybe burning 3amps?

Re: Basement vent fan.

Reply #5 – April 14, 2017, 10:44:59 pm

Any one know that p/n for that sensor?

Re: Basement vent fan.

Reply #6 – April 15, 2017, 12:04:24 am

Couldn't stand it anymore.

Pulled off the cover plate and on the back of the sensor there is a dial - temps on the dial that can be adjusted from 90F to 120F. Mine was set at 95. So........ should start when temp in bay gets to 95F. Fan off now after I reconnected it. We shall see.

Re: Basement vent fan.

Reply #7 – April 15, 2017, 12:06:48 am

BTW -. Trimetric shows fan was using 4 amps.

It's quiet now,.....😁

Re: Basement vent fan.

Reply #8 – April 15, 2017, 12:10:14 am

I'll take a better look at it tomorrow. Maybe I can blast it with air and get some dirt out of it. Maybe Corrosion X?

Re: Basement vent fan.

Reply #9 – April 15, 2017, 12:13:07 am

Any line voltage cooling only thermostat should do the trick at 3 amps. Exhaust fans are NOT component cooling fans unless properly ducted and sealed. they only exhaust whatever air is about 2" in front of the intake of fan because air is stupid. Don't believe me, try the match "trick" pretty easy to blow out a match or candle 4" from your lips, Now try to suck out the flame at 2" from your lips. As far as "sensitive" electronic components many are rated at 105 F or more. Think of your laptop that you just grabbed out of your 130 F. Car or the Vehicles CPU. Dell has a server that is rated and Warrantied for about 30 hours per year when the cold air intake side of unit the reaches 113 F. Kinda off topic but relavent

Re: Basement vent fan.

Reply #10 – April 15, 2017, 12:32:23 am

Good point OFF.

Our Prosine 2.5 and the AquaHot is also in that bay behind a panel. Prosine says operating temp is 0 to 50 deg C. That's 32 to 122F.

I reset to 95 - will try to clean it out tomorrow.

Re: Basement vent fan.

Reply #11 – April 15, 2017, 08:29:09 am

Quote from: Carol & Scott – April 14, 2017, 10:23:29 pm

Yeah - I know. The sound is driving me crazy and it's burning power. Argh.

My guess it's a bad sensor.

Sensor temp is 83F. Should be off, I would think.

Can you put a wireless digital thermometer inside the space to monitor the temperature. Then you can compare it to your sensor temp setting.

John M

Re: Basement vent fan.

Reply #12 – April 15, 2017, 09:08:13 am

Scott, following on John, if I remember your coach you have the accutemp. Tape a remote next to the area and set the monitor/alarm.

Re: Basement vent fan.

Reply #13 – April 16, 2017, 09:51:01 am

Upon further review, the sensor starts the vent fan fine. It just doesn't know how to turn off. Will call FT tomorrow and get a replacement. In the meantime will disconnect power when temp gets below 90ish.

Re: Basement vent fan.

Reply #14 – April 16, 2017, 11:45:21 am

I think you can turn it off temporarily by holding an ice cube against it.

Re: Basement vent fan.

Reply #15 – April 16, 2017, 04:03:08 pm

Hey Dick -

Haven't tried that.

Re: Basement vent fan.

Reply #16 – April 16, 2017, 04:31:49 pm

Quote from: Carol & Scott – April 16, 2017, 09:51:01 am

Upon further review, the sensor starts the vent fan fine. It just doesn't know how to turn off. Will call FT tomorrow and get a replacement.

Per my info, it's probably a White-Rodgers switch, likely this one WHITE-RODGERS Switch,Fan Control - 4E116|3F05-1 - Grainger

Seems to have been discontinued, but any HVAC supplier should be able to cross-reference.

Re: Basement vent fan.

Reply #17 – April 16, 2017, 04:36:26 pm

Thanx Michelle -

I'll track it down.

Hope you guys r OK. 😃

Re: Basement vent fan.

Reply #18 – April 16, 2017, 04:41:30 pm

Zoro has it

Value Brand Adjustable Fan Switch, 90-130 6UEE1 | Zoro.com

Re: Basement vent fan.

Reply #19 – April 16, 2017, 05:20:11 pm

Craneman -

Nice find.

Re: Basement vent fan.

Reply #20 – April 17, 2017, 08:24:45 pm

Quote from: craneman – April 16, 2017, 04:41:30 pm

Zoro has it

Value Brand Adjustable Fan Switch, 90-130 6UEE1 | Zoro.com

Appears to have a 20 degree dead band. Check out a normal cheapo home cooling thermostat for a 2-3 degree deadband.

Re: Basement vent fan.

Reply #21 – April 17, 2017, 08:37:19 pm

Dead band?

Re: Basement vent fan.

Reply #22 – April 17, 2017, 09:07:18 pm

I guess I still don't understand - Dead Band. Seems if you set it to go on at 95F it just goes on?

And goes off when the temp is below 95F. No?

Re: Basement vent fan.

Reply #23 – April 17, 2017, 09:28:33 pm

Quote from: Carol & Scott – April 17, 2017, 09:07:18 pm

I guess I still don't understand - Dead Band. Seems if you set it to go on at 95F it just goes on? And goes off when the temp is below 95F. No?

If you set it for 90 it will go turn off at 70 set for 110 it will turn off at 90 20 deg. spread. Read the specs on the link. If you wanted it to turn off at 95 you would set it for 115.

Re: Basement vent fan.

Reply #24 – April 17, 2017, 09:33:33 pm

WOW!

Affiliate Notice