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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 5648
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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I have a tempstar im trying to figure out, Just climbed down

Customer Question

i have a tempstar im trying to figure out
JA: I'll do all I can to help. How long have you been dealing with this?
Customer: Just climbed down there today and opened it up. Got a green led flashing 3 times im guessing the pressure switch from what I gather
JA: Do you plan on doing the work yourself?
Customer: yeah
JA: Anything else we should know to help you best?
Customer: its only 3 years old.
Submitted: 25 days ago.
Category: HVAC
Expert:  airheatman replied 25 days ago.

Can you give me complete model from inside furnace in burner compartment so I can provide guidance with this specific unit.Model will be on a label just above burners on right or left inside panel

Customer: replied 25 days ago.
Right now I have the installation manual and it says (international comfort products) Tempstar N9MSB. If thats not enough then I have to crawl back into the crawlspace
Expert:  airheatman replied 25 days ago.

That is fine, but to do any troubleshooting it will be necessary to go back to unit

Customer: replied 25 days ago.
Yeah I know. I will . I can tell you what Ive tried
Customer: replied 25 days ago.
unplugged the drainage tube, checked the exaust pipe outside
Expert:  airheatman replied 25 days ago.

Does the vent inducer motor actually come on?

Customer: replied 25 days ago.
The small fan kicks on...then the ignitor comes on and gas blows for about a min then the gas turns off and the fan runs for another min or so. This unit is only three years old and the company that did it went out of business
I have a couple pictures.
Customer: replied 25 days ago.
it comes on
Expert:  airheatman replied 25 days ago.

When you can go back down, lets try something and that will tell us if it is on the vacuum side or drain side. Remove hose from inducer and leave attached to switch. After inducer starts, suck on hose to close switch.Keep sucking.keeping a vacuum on switch.See if furnace will stay running.If so we need to concentrate on why we are not getting enough vacuum.If not concentrate on drain.

Customer: replied 25 days ago.
Ok... I just realized i can do this from my phone so i don't have to keep going up and down there.
Expert:  airheatman replied 25 days ago.

Let me know if furnace will stay running while sucking on hose

Customer: replied 25 days ago.
Is it safe to turn it on from the thermostat and then go down and control when it comes on from the safety switch on the other door?
Customer: replied 25 days ago.
I'm trying to send a photo
Expert:  airheatman replied 25 days ago.

That one has a bit different set up. not sure which hose you would need to draw a vacuum on. I am going to open to other experts who may know.

Customer: replied 25 days ago.
Ok thank you
Customer: replied 25 days ago.
can we cancel this transaction then?. I just figured it out myself.
Expert:  airheatman replied 24 days ago.

Yes will send to admin.

Customer: replied 24 days ago.
Thank you!