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> help im stuck, Hydro Flame 7312 parts

Ryflyby
post Oct 1 2017, 03:42 PM
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Favorite Truck Camper(s): little caboose
Type and Brand of Truck(s) Owned: 1990 Chevy Silverado K2500
Type of Tiedowns used: Custom
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looking to find a gas valve for my furnace. have heat but thermostat doesn't shut off valve when satisfied. would like to find replacement. Any help would be appreciated. THx
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509dave
post Dec 26 2017, 10:51 AM
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Favorite Truck Camper(s): Citation
Type and Brand of Truck(s) Owned: '13 Silverado 3500HD Extended SRW
Type of Tiedowns used: Torklift frame mount, HappiJac turnbuckles, 5/16" galvanized chain
Truck and Camper Setup: '13 Silverado 3500HD, '01 Citation 10.2, Torklift,



QUOTE(Ryflyby @ Oct 1 2017, 12:42 PM)
looking to find a gas valve for my furnace. have heat but thermostat doesn't shut off valve when satisfied. would like to find replacement. Any help would be appreciated. THx
*


I'd try pplmotorhomes.com or tweetys.com...
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509dave
post Dec 26 2017, 11:21 AM
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Favorite Truck Camper(s): Citation
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Type of Tiedowns used: Torklift frame mount, HappiJac turnbuckles, 5/16" galvanized chain
Truck and Camper Setup: '13 Silverado 3500HD, '01 Citation 10.2, Torklift,



QUOTE(509dave @ Dec 26 2017, 07:51 AM)
I'd try pplmotorhomes.com or tweetys.com...
*


Sorry, I had 'water heater' stuck in my head, not furnace.
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SidecarFlip
post Dec 29 2017, 09:07 AM
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Type and Brand of Truck(s) Owned: 1997 Ford F350 4x4 LB SRW CC 7.3 diesel
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Truck and Camper Setup: 1997 Ford F350 4 door 4x4 Crew Cab 7.3 Diesel, Lance 915 loaded, 2015 Palomino SS1500 Loaded



The sponsor of this site has many for sale, take your choice. Click on the 'RV Parts' at the top of the page....
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RV_Tech
post Dec 30 2017, 02:35 PM
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Truck and Camper Setup: Hallmark Ute XL No modes to truck Torklift Fast Guns Fast guns had to be cut down to absolute minimum (14 1/2") to use with Happijac front tie down and Hallmark camper.



Because furnace gas valves have duplex solenoids a stuck valve would require both solenoids to fail simultaneously in the open position, a virtual impossibility since they only open under power. Far more like like a shorted wire or board. If the valve is truly stuck, disconnecting the hot lead to the valve should make no difference, but I bet if you do, the valve will close. I have worked on more than one RV with the same problem, always a wiring or control issue.
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SidecarFlip
post Dec 31 2017, 09:36 PM
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Truck and Camper Setup: 1997 Ford F350 4 door 4x4 Crew Cab 7.3 Diesel, Lance 915 loaded, 2015 Palomino SS1500 Loaded



I just learned something I never knew myself.... I take it the duplex valve is for safety reasons?
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RV_Tech
post Jan 1 2018, 07:33 AM
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Truck and Camper Setup: Hallmark Ute XL No modes to truck Torklift Fast Guns Fast guns had to be cut down to absolute minimum (14 1/2") to use with Happijac front tie down and Hallmark camper.



QUOTE(SidecarFlip @ Dec 31 2017, 10:36 PM)
I just learned something I never knew myself....  I take it the duplex valve is for safety reasons?
*



Yes for safety, same with water heater. Actually everything in the propane systems defaults towards "off or lower pressure". For example, has anyone ever seen a propane regulator that puts out more rather than less pressure when it fails? When they get old, they put out less and less pressure, not more.

Back to the furnace staying on, all it takes is mouse chewed wires to short the two that feed the furnace from the thermostat to keep it going and that is a common cause. A staple through the wires will do the same thing.

Want to test for it? Go right to the side of the furnace where the thermostat and power comes in. Disconnect one of the blue leads from the thermostat wire. Did it end the runaway furnace? If it did, it is a thermostat wire issue, not a furnace issue. The furnace is just doing what it was being told to do. Every single component in the furnace is designed to open the circuit and shut down without power. It has to be that way for safety. Makes sense right?

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