Furnace Tech Recommendation?

[Chingyul]

Hey,
Anyone have a furnace tech recommendation?
My pilot is lit (strong blue flame), but the burners won't go.

Old Coleman furnace (60s vintage). ATCO inspected it last spring and found no issues (heat exchanger good, no CO readings). My thermostat is working and is sending signal for heat. Power is running fine, and fan motor is running fine when manually switched on. That's the extent of my knowledge though.

Some quick reading suggests the thermocouple, which looks to be in the flame pretty good.

Flash furnace has some decent reviews, but I've left a message.
Glad it's pretty warm tonight. Space heater is keeping my rooms warm enough and the rest of my house is only down to 17. I wouldn't really call it an emergency and would rather avoid any late night service premiums.

[transplant99]

https://forum.calgarypuck.com/showthread.php?t=104907

[Chingyul]

Originally Posted by transplant99

https://forum.calgarypuck.com/showthread.php?t=104907

Thanks. Sent him a PM and email.

[jeffh]

Ensure the wires from the thermostat are intact and connected securely to the furnace. Apparently, they get brittle and break. So you may assume you are calling for heat, but the signal isn’t getting back to the furmace.
Secondly it may be your gas valve isn’t performing properly and not opening the main valve, as it should.

[ma-skis.com]

I had something similar, I disconnected the heat flame sensor and cleaned it (just used some fine grit sandpaper).

It seemed to do the trick, no problems since, that was about a month ago. Took a total of 10 minutes to do as well.

[snootchiebootchies]

I replaced the thermocouple on my water heater about a year ago. I was forced to do it myself as no plumber was able to provide us service that same evening. It ended up being a very simple job and I'm not a handy person at all. I bought the replacement thermocouple from Canadian Tire. I don't know if replacing a thermocouple on a furnace would be more difficult.