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Carrier infinity thermostat displaying "System Malfunction"

Customer Question
carrier infinity thermostat displaying...

carrier infinity thermostat displaying "System Malfunction" message.

Contractor's Assistant: Just to clarify, do you think this is a larger HVAC problem, or something specific to the thermostat?

The system continues to operate normally, so it does not seem to be a larger HVAC problem. The online manual says to depress the right button to override the "system malfunction" message, but depressing this button does nothing.

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

Yes

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

I don't think so. I think all I need is guidance on how to property operate the thermostat, given that the HVAC is operating normally

Submitted: 6 months ago.Category: HVAC
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Answered in 31 minutes by:
12/27/2017
HVAC Technician: Phil, Mechanical Engineer replied 6 months ago
Phil
Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 9,715
Experience: Retired HVAC/ Electrical & Boiler contractor. Industrial
Verified

Hello, turn the power off to the furnace/ air handler, then gently pry the thermostat from its sub base, and replace the batteries if your model has them, put the batteries in *backwards* for 30 seconds, then remove them and replace them in the correct position.

.

Let me know how that goes after you you turn power back on to the furnace/air handler.

.

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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Customer reply replied 6 months ago
Problem solved meantime with a technician visit. Thank you.
HVAC Technician: Phil, Mechanical Engineer replied 6 months ago

You are welcome

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