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05-20-2019, 11:43 AM
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#1
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Junior Member
Join Date: Jun 2018
Posts: 25
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Suburban water heater shuts off at 85 degrees
Discovered our 2 yr old Suburban water heater doesn't get past a lukewarm temp on our maiden spring trip this year. After returning home and some trouble shooting I think it has something to do with the thermostat. The odd thing is heating with gas or electric doesn't matter - both methods shut down at 85 degrees. Also tried gas and electric both on - same result. Checked out the 2 emergency shut-off reset buttons. Pushed both of them but neither one was tripped. Per the YouTube videos looks like replacing the thermostat is really simple - but why would the gas and electric fail at the same time in the same way? Any ideas? Have a call into my service dept - waiting for their response.
Hudson Dave
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05-20-2019, 11:47 AM
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#2
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Kanadian Kamper
Join Date: Sep 2010
Location: Southern Ontario
Posts: 8,113
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Sounds like it’s still in bypass for winterizing.
Happens more times than people can count.
Did you de-winterize or have it done?
__________________
Ken and Terry
2018 Sunseeker 2430S-CD, nicely modified and carried by a 2017 Ford E450 Sport
Former Georgetown 330TS owner for 10 years with more mods than I can count, pushed by our 2017 GMC Terrain
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05-20-2019, 11:47 AM
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#3
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Pickin', Campin', Mason
Join Date: Aug 2015
Location: South Western PA
Posts: 19,051
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How are you measuring the temperature?
Maybe your bypass valves are set incorrectly and the cold is mixing with the hot.
A laser thermometer aimed at the relief valve might give you a clue.
__________________
2022 Cedar Creek 345IK 5th Wheel•Solar & Inverter•2017 Ford F-Series SCREW 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=64
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05-20-2019, 11:51 AM
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#4
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Site Team
Join Date: Mar 2014
Location: Grayson County, Texas
Posts: 21,473
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Quote:
Originally Posted by kenandterry
Sounds like it’s still in bypass for winterizing.
Happens more times than people can count.
Did you de-winterize or have it done?
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Looks like Dave posted his question and logged out without seeing your answer.
Dave... the thermostats are likely shutting off at the correct temperature but if your valves are set incorrectly, you will have cold water mixing with the hot to cause lukewarm water at the faucet.
__________________
2015 FR Wildcat 295RSX / GMC Sierra
Nights Camped: '13 = 49/'14 = 74/'15 = 74/'16 = 85/'17 = 110/'18 = 111/'19 = 86/'20 =108/'21 = 115/'22 = 135/'23 = 78; Booked for 2024 = 69
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05-20-2019, 11:51 AM
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#5
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Site Team
Join Date: Nov 2010
Location: Northeast Louisiana
Posts: 33,695
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Please read this thread and verify you don't have the crossover valve incorrect. As stated, this is a very common thing and the reason we keep the following link as a sticky thread at the top of the plumbing section:
http://www.forestriverforums.com/for...st-103381.html
__________________
2011 Flagstaff 831 RLBSS
A 72 hour hold in a psych unit is beginning to intrigue me as a potential vacation opportunity.
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05-20-2019, 12:16 PM
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#6
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Senior Member
Join Date: Nov 2012
Location: Mount Laurel, New Jersey
Posts: 9,230
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If you have an outside shower, make sure the valves are turned off not at the shower head.
__________________
2012 SunSeeker 3100SS Toad-1962 Futura Average 100 + days camping
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05-20-2019, 12:30 PM
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#7
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Junior Member
Join Date: Jun 2018
Posts: 25
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Duh!! Cross-over valve was still open from last winter. In-process of running my temp test again. Thanks for the quick feedback everyone.
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05-20-2019, 12:36 PM
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#8
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Senior Member
Join Date: May 2017
Posts: 5,712
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Quote:
Originally Posted by HudsonDave
Duh!! Cross-over valve was still open from last winter. In-process of running my temp test again. Thanks for the quick feedback everyone.
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Yep...that will get you every time. Got into the habit years ago to double check the valves. Too easy to get sidetracked and forget about it.
Nothing like blowing a half gallon of AF onto the ground cause you forgot to close a "Low Point" drain outside.
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05-20-2019, 12:37 PM
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#9
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Junior Member
Join Date: Jun 2018
Posts: 25
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Done testing - got 131 degrees in 10 mins. Yikes!
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05-20-2019, 12:43 PM
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#10
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Site Team
Join Date: Mar 2014
Location: Grayson County, Texas
Posts: 21,473
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Quote:
Originally Posted by HudsonDave
Done testing - got 131 degrees in 10 mins. Yikes!
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You're healed!
__________________
2015 FR Wildcat 295RSX / GMC Sierra
Nights Camped: '13 = 49/'14 = 74/'15 = 74/'16 = 85/'17 = 110/'18 = 111/'19 = 86/'20 =108/'21 = 115/'22 = 135/'23 = 78; Booked for 2024 = 69
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05-20-2019, 01:43 PM
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#11
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Site Team
Join Date: Nov 2010
Location: Northeast Louisiana
Posts: 33,695
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Ok, great to hear you are good to go.
Now, did your service dept ever return the call?
__________________
2011 Flagstaff 831 RLBSS
A 72 hour hold in a psych unit is beginning to intrigue me as a potential vacation opportunity.
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05-20-2019, 03:20 PM
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#12
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Junior Member
Join Date: Jun 2018
Posts: 25
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It has been over 24 hrs with no return call from my dealer. I like the feedback I get on this forum that always figures a solution for me.
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05-20-2019, 05:24 PM
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#13
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Senior Member
Join Date: May 2015
Location: Dunn, NC
Posts: 1,199
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Done that more than once. 🤬
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05-20-2019, 06:29 PM
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#14
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Pickin', Campin', Mason
Join Date: Aug 2015
Location: South Western PA
Posts: 19,051
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Thank you for reporting back.
Many ask a question, find a solution and never return. That helps only the OP.
__________________
2022 Cedar Creek 345IK 5th Wheel•Solar & Inverter•2017 Ford F-Series SCREW 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=64
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