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I have a Carrier 58STA110 with a code 33. I have bypassed…

Customer Question
I have a Carrier...

I have a Carrier 58STA110 with a code 33. I have bypassed and tested all of the BVSS and Flame Rollout switches. I have even opened the supply plenum, removed the filter and keep receiving the code 33. The blower is clean and starts right up when disconnecting and reconnecting the draft safeguard switch. Any other ideas?

Contractor's Assistant: I'll do all I can to help. How long have you been dealing with this?

Just a day.

Contractor's Assistant: Do you plan on doing the work yourself?

I'd like to.

Contractor's Assistant: Anything else we should know to help you best?

I don't think so.

Submitted: 5 months ago.Category: HVAC
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Answered in 2 hours by:
3/30/2018
HVAC Technician: Phil, Mechanical Engineer replied 5 months ago
Phil
Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 7,426
Experience: Retired HVAC/ Electrical & Boiler contractor. Industrial
Verified

Hello, tell me in detail how you tested the BVSS switches (wired and using a volt meter will not always work in these computerized AC control voltage circuits)... I need to know exactly how you tested the draft safeguard switch as well.

.

Take close up, exceedingly well focused photo's of the wiring diagram glued inside the furnace/air handler door, and the printed circuit board mounted on the blower, , that shows where the thermostat wires connect, and I will mark them up with trouble shooting instructions.

Use the 'add files' link next to your send button to get the photo(s) to me.

.

We can go from there with training, coaching and diagnosis.... without a time limit, In depth with as much detail as needed .

.

When we finally get the situation solved, please select the 'finish and rate your expert link' near the top of your page and click on it.

.
My goal is to give you the best experience possible!
I hope I have earned a 5 star rating! Please remember to rate my service by selecting the 5 stars at the top of the screen before you leave today.

If you need more assistance, please use the reply box and let me know.

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