Rheem furnace error code 55/57

[benjn]

Getting error code 55/57 on my Rheem shortly after I installed a Nest Snow thermostat. Could this be related to the thermostat or is it probably coincidental?

What is happening is the I turn the heat on and it blows hot air for a while but then stops. The furnace continues to run but no air comes out.

I had a company out a week or two ago but I'm still having the issue.

Any ideas?

[Houptee]

Its most likely the pressure switch that detects if the inducer fan for the exhaust is running.

Feel the inducer fan make sure it is running when the furnace tries to start up.

It has a rubber hose connected to the pressure switch that makes suction when the fan is on then you can hear it click.

If its faulty and failing it shuts down the furnace as a safety because it thinks the fan is not working.

You can order one online if you find the part number or look at it it has the pressure specs on it.

Amazon or supplyhouse.com or ebay etc should have it.

[benjn]

Thanks houptee, one point of clarification. With the issue I’m having the furnace will continue to run and make noise, but no hot air will come out. My understanding is that the pressure switch with a fault will completely turn off the furnace which is not what’s happens int with mine. Does it still sound like a pressure switch issue?

[Houptee]

The fault codes are on a decal when you take the cover off the furnace.

When you google Rheem 55 57 code it comes up as pressure switch fault.

That is a common failure part on all brands of furnaces along with flame sensors.

[Jake]

Hey there,

Thanks for the helpful reply Houptee.

I wanted to check in and see if you managed to see Houptee's post. Please let me know if you have any questions from here. I would be happy to assist, and make sure you are good to go.

Best regards,
Jake

[Jake]

Hey there,

I wanted to check in and see if you are still in need of any help. Please let me know, as I would be happy to assist, and answer any questions you may have.

Best regards,
Jake

[EmersonB]

Hi everyone,

@benjn just one quick final check in here since activity has slowed down. We'll be locking the thread in the next 24 hours, but if you still need help, I would be happy to keep it open. If there's more we can do, just let us know.

I appreciate the help, Houptee and Jake.

Best,
Emerson