Galway Girl Posted February 4, 2022 Share Posted February 4, 2022 We’ve been experiencing a very high pitched squeal above 10 Khz and can’t isolate the source. location: the sound seems to comes from the ceiling area around the maxxair fan We have turned off all items including the tv, radio, fans, water heater, furnaces etc. to isolate the source. at random times the squeal comes back. Anyone else had this issue? 2019 Elite II (Hull 505 - Galway Girl - August 7, 2019 Delivery) Tow Vehicle: 2021 F350 King Ranch, FX4, MaxTow Package, 10 Speed, 3.55 Rear Axle Batteries Upgrade: Dual 315GTX Lithionics Lithiums - 630AH Total Inverter/Charger: Xantrex 2000Pro Travel BLOG: https://4-ever-hitched.com Link to comment Share on other sites More sharing options...
Geronimo John Posted February 4, 2022 Share Posted February 4, 2022 Any possibility it could be from the A/C unit? Other than that, there is not much up there in the ceiling. TV: 2019 F-150 SuperCrew Lariat, 3.5L EcoBoost, Max Tow, FX-4, Rear Locker OLLIE: 2018 OE2 Hull 342, Twin Bed. OLLIE DIY’s: Timken Bearings, BB LiFePO4's, Victron 712 Smart, 350 Amp Master Switch, Houghton 3400, Victron Orion DC - DC, 3000-Watt Renogy Inverter, P.D. 60-amp Converter, Frig Dual Exhaust Fans, Kitchen Drawer Straps. TV DIY’s: 2 5/16" Anderson System, Nitto recon’s, Firestone Rear Air Bags, Bilstein 5100’s, Mud Flaps & Weather Tech all, installed Ham Radio (WH6JPR). Link to comment Share on other sites More sharing options...
Frank C Posted February 4, 2022 Share Posted February 4, 2022 Have you disconnected from shore power to see if the noise goes away then? Link to comment Share on other sites More sharing options...
Moderators Mike and Carol Posted February 4, 2022 Moderators Share Posted February 4, 2022 Does the sound change if you turn the overhead lights on/off? Texas Hill Country | 2016 Elite II #135 | 2020 Ram 2500 6.7L Link to comment Share on other sites More sharing options...
Galway Girl Posted February 5, 2022 Author Share Posted February 5, 2022 Will try disconnecting from shore power to see …the sound is intermittent, and only is on for a few seconds. I’m suspecting oscillation on a circuit board the goes away when energy drops. Sound is loudest up by the Maxxair Fan above stove. 2019 Elite II (Hull 505 - Galway Girl - August 7, 2019 Delivery) Tow Vehicle: 2021 F350 King Ranch, FX4, MaxTow Package, 10 Speed, 3.55 Rear Axle Batteries Upgrade: Dual 315GTX Lithionics Lithiums - 630AH Total Inverter/Charger: Xantrex 2000Pro Travel BLOG: https://4-ever-hitched.com Link to comment Share on other sites More sharing options...
Geronimo John Posted February 5, 2022 Share Posted February 5, 2022 Is your Maxx Air fan partially open? They are "Stiff/Tight" only when open or fully closed. GJ PS: Fried another brain cell. How about the bathroom exhaust fan. Maybe a bearing squeak. 1 TV: 2019 F-150 SuperCrew Lariat, 3.5L EcoBoost, Max Tow, FX-4, Rear Locker OLLIE: 2018 OE2 Hull 342, Twin Bed. OLLIE DIY’s: Timken Bearings, BB LiFePO4's, Victron 712 Smart, 350 Amp Master Switch, Houghton 3400, Victron Orion DC - DC, 3000-Watt Renogy Inverter, P.D. 60-amp Converter, Frig Dual Exhaust Fans, Kitchen Drawer Straps. TV DIY’s: 2 5/16" Anderson System, Nitto recon’s, Firestone Rear Air Bags, Bilstein 5100’s, Mud Flaps & Weather Tech all, installed Ham Radio (WH6JPR). Link to comment Share on other sites More sharing options...
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