Where does this hose go?

4 years ago

last modified: 4 years ago

(pic of hose is in profile and comment)A maintenance worker came by to supposedly troubleshoot an older model Lennox gas furnace. It was still working but it would just turn on when it wanted to and turn off. Now the pilot light won't stay lit ;post maintenance worker being here. I noticed this hose got disconnected by the maintenance worker. Can someone please tell me where to put it back to and also where the heck is an air filter supposed to go because I don't see one. I just moved here and would rather the maintenance worker who doesn't seem to know anything about HVAC doesn't return to make it worse, he thinks the unit needs to be replaced but I think it's a simple solution to fix. I appreciate all help. Thank you so much

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Comments (4)

Tiana Williams
Original Author
4 years ago
Therese N
4 years ago
last modified: 4 years ago
See these red flags popping up? 🚩🚩🚩 I have heard more stories of shady HVAC “repairmen” aka salesmen who sabotage furnaces and tell people they need to be replaced. He’s got you pegged for another sucker. Maybe call your gas company and explain your situation. Even if they charge a service fee to look at it, I’d trust them more. Penny-wise and pound-foolish.

Ok, as I reread this, you say maintenance worker- are you in a rental or managed housing of some kind? It’s possible it does need a new part. I just hear those rip off stories so often, I’m always skeptical.
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klem1
4 years ago
last modified: 4 years ago
Look's like the piolet tube which connect's to gas valve. Look below the black and white wires for where it broke off. I'm thinking along the same lines as Therese so looking foward to hearing the answers.
HU-867564120
4 years ago
If the pilot lights while depressing the gas valve, it's not a pilot gas line.

If the pilot won't stay lit when releasing the gas valve, the broken 'hose' may be a broken thermocouple tube; the thermocouple must be intact and working for the pilot to stay lit. Your picture shows the 'hose' leading back to where the pilot flame and thermocouple sensing head should be located. The purpose of the thermocouple is to give the gas valve a signal that the pilot flame is lit. That's it, no natural gas or propane is carried within the thermocouple, it only sends a signal to the gas valve. This make it safe for the DIY'er to replace a failed thermocouple themselves. Replacement thermocouples are available at a hardware or box store, they are generic and interchangeable, the only issue being the tube length. don't buy too short a one, longer and the excess tube can be coiled. To change one is fairly easy and requires only simple hand tools, maybe including nut drivers and some small wrenches. I don't know about those fingernails, though! They may get in the way. There is no danger of gas leaks, etc. when changing a thermocouple, they either work or they don't, at which point the gas valve shuts the gas off.

https://www.homedepot.com/c/ah/how-to-replace-a-thermocouple/9ba683603be9fa5395fab901ced3a679