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12-01-2019, 12:52 PM
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#1
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Junior Member
Join Date: Oct 2019
Posts: 10
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furnace has high pitched whine
I have a 2019 hemisphere 5th wheel 286rl. The furnace has a high pitched whine anything I should look for before taking it to dealer?
Thanks
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12-01-2019, 01:03 PM
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#2
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Pickin', Campin', Mason
Join Date: Aug 2015
Location: South Western PA
Posts: 19,144
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It's hard for us to advise on something we can't hear but abnormal furnace whining noises are usually caused by a restriction of some sort.
Do you have any partially closed registers or blockages?
__________________
2022 Cedar Creek 345IK 5th Wheel•Solar & Inverter•2024 Ford F-Series SCREW•7.3L•4x4•Factory Puck•B&W Companion•TST Tire Monitor w/Repeater•Sinemate 3500w Gen.
F&AM Lodge 358 Somerset, PA - JAFFA Shrine - Altoona, PA
Days Camped ☼ '19=118 ☼ '20=116 ☼ '21=123 ☼ '22=134 ☼ '23=118☼ '24=90
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12-02-2019, 11:00 AM
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#3
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Junior Member
Join Date: Oct 2019
Posts: 10
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No closed registers appears to be coming from behind the air intake panel.
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12-02-2019, 11:32 AM
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#4
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Pickin', Campin', Mason
Join Date: Aug 2015
Location: South Western PA
Posts: 19,144
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Sounds like either you or someone qualified (if you are uncomfortable with taking things apart) is going to have to remove the air intake and begin to do some investigating.
There have been many reports of loose/crushed/kinked ducting and missing screws on the metal shrouding.
Best of luck to you.
__________________
2022 Cedar Creek 345IK 5th Wheel•Solar & Inverter•2024 Ford F-Series SCREW•7.3L•4x4•Factory Puck•B&W Companion•TST Tire Monitor w/Repeater•Sinemate 3500w Gen.
F&AM Lodge 358 Somerset, PA - JAFFA Shrine - Altoona, PA
Days Camped ☼ '19=118 ☼ '20=116 ☼ '21=123 ☼ '22=134 ☼ '23=118☼ '24=90
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12-02-2019, 11:52 AM
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#5
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Senior Member
Join Date: Jun 2013
Posts: 1,114
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you sure it's the furnace? My propane regulator whines when the tank gets low. Drove me nuts until I could find the source.
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12-02-2019, 01:58 PM
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#6
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Senior Member
Join Date: Jan 2018
Location: Raleigh, NC
Posts: 9,591
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Plastic impeller
Quote:
Originally Posted by 5picker
Sounds like either you or someone qualified (if you are uncomfortable with taking things apart) is going to have to remove the air intake and begin to do some investigating.
There have been many reports of loose/crushed/kinked ducting and missing screws on the metal shrouding.
Best of luck to you.
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One person has reported that the new furnaces come with plastic impellers on the two squirrel-cage blowers--and they fail.
__________________
Larry
"Everybody's RV is not like your RV."
"Always take pictures with the button on the right."
"Always bypass the water heater before opening the low-point drains."
Sticks and Bricks: Raleigh, NC
2008 Cherokee 38P: at Ivor, VA permanently
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12-02-2019, 03:30 PM
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#7
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Junior Member
Join Date: Oct 2019
Posts: 10
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thanks for the response I a fairly good at taking things apart putting it back together is still up for debate, I will check out the things you suggested.
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12-02-2019, 03:38 PM
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#8
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Senior Member
Join Date: Jan 2018
Location: Raleigh, NC
Posts: 9,591
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Detailed furnace removal/replacement instructions
Quote:
Originally Posted by okfine
thanks for the response I a fairly good at taking things apart putting it back together is still up for debate, I will check out the things you suggested.
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This is probably a Suburban SF-series furnace. The troubleshooting and repair manuals are easily found online. I can provide detailed step-by-step instructiions if needed.
__________________
Larry
"Everybody's RV is not like your RV."
"Always take pictures with the button on the right."
"Always bypass the water heater before opening the low-point drains."
Sticks and Bricks: Raleigh, NC
2008 Cherokee 38P: at Ivor, VA permanently
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12-02-2019, 06:03 PM
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#9
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Member
Join Date: May 2019
Posts: 83
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High pitched whines are often bearings.
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12-02-2019, 08:05 PM
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#10
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Senior Member
Join Date: Jan 2018
Location: Raleigh, NC
Posts: 9,591
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On a new 2019
Quote:
Originally Posted by G Hollingsworth
High pitched whines are often bearings.
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Bearings? On a new 2019? The Suburban bearings are lubricated for life. The service manual tells you NOT to lubricate them.
__________________
Larry
"Everybody's RV is not like your RV."
"Always take pictures with the button on the right."
"Always bypass the water heater before opening the low-point drains."
Sticks and Bricks: Raleigh, NC
2008 Cherokee 38P: at Ivor, VA permanently
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12-02-2019, 08:16 PM
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#11
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DaveAlb
Join Date: Oct 2018
Location: Yankton, SD
Posts: 85
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Quote:
Originally Posted by G Hollingsworth
High pitched whines are often bearings.
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Is the whine bothersome? How well does it heat? Our 2018 sounds a little different every time it runs, but it heats great. I think ours has a small piece of debris heating the impeller. If it heats well, might just want to disregard...if not aggravating.
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12-02-2019, 09:16 PM
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#12
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DaveAlb
Join Date: Oct 2018
Location: Yankton, SD
Posts: 85
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Quote:
Originally Posted by DaveAlb
Is the whine bothersome? How well does it heat? Our 2018 sounds a little different every time it runs, but it heats great. I think ours has a small piece of debris heating the impeller. If it heats well, might just want to disregard...if not aggravating.
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I mean hitting the impeller. Some electric motors are a bit whiny too.
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12-04-2019, 10:36 PM
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#13
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Senior Member
Join Date: Jan 2015
Location: West Michigan
Posts: 641
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Link is from the library at the top of this page.
The trouble shooting section in the manual below is very good and will help you fix your furnace.
http://www.bdub.net/manuals/Suburban_Service_Manual.pdf
Hope this Helps Tim 
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