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Old 11-21-2021, 10:39 PM   #1
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Suburban Furnace

It been working good until this year.. Fan started good, but as soon as it was feed propane and ignited the gas, the gas would shut off immediately. The trouble shooting chart did not show this problem.
It thought it had to be the modular circuit board, so I bought the Dinosaur HD type. Amazon got it to us in 3 days at 6 pm too late to install. Installed and it still would not keep the propane on.
Googled symptoms. First posting was not enough pressure, but both tanks are full.
The tank valve was only opened 1 turn and the 3 way valve was pointing in the wrong direction.
The stove lite good, but does not indicate or need much pressure, so don't use this method to determine furnace problems.
Moral: check the simple stuff first so you don't waste hours and dollars.
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Old 11-22-2021, 09:42 AM   #2
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Just for others that may read this thread, whenever you turn ON your propane, always open it all the way. That way it will seal against the back seal in valve.
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Old 11-22-2021, 10:03 AM   #3
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And SLOWLY open the vlave so any Excess Flow Device doesn't get tripped

If tripped........fully close LP Service valve/wait 30 seconds then SLOWLY fully open

LP Valves have dual seats so they should be Fully Open or Fully Closed


LP System Regulator controls/maintains 11"WC (0.4 psi)
Stove/oven has it's own reg under the stove top that controls/maintains pressure for stove at 10"WC (0.36 psi) when system is at 11"WC
*stove is good method to establish LP flow after a period of non-use


Curious about your statement
"...but both tanks are full."
Both tanks on a Motorhome??
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Old 11-25-2021, 06:54 AM   #4
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Fifth wheel.
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Old 11-25-2021, 10:31 AM   #5
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Quote:
Originally Posted by Fiesta48 View Post
Fifth wheel.
2015 Fleetwood Discovery 40E in Signature???
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Old 11-27-2021, 01:49 PM   #6
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I have 3 RVs, 41' DP for long trips and winters, 28' 5er driven by my SIL, and 24' C to go to AK some day and to park at son's small lot.
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Old 11-27-2021, 03:26 PM   #7
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I have 3 RVs, 41' DP for long trips and winters, 28' 5er driven by my SIL, and 24' C to go to AK some day and to park at son's small lot.
That's why it helps providing info on RV in posts......trailers don't have LP Tanks, They have LP Cylinders
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