Carrier Heating & Cooling - Recent Questions, Troubleshooting & Support

check the conections try contact sprey

Carrier Heating... • Answered on May 03, 2021

If you have two drives running in tandem, you may often see an F6 or F7 code because the drives have been programmed to trip using the Aux inputs if the other drive is not ready

Carrier Heating... • Answered on Apr 23, 2021

I think you can find it in the user manual of the unit.

Carrier Heating... • Answered on Mar 24, 2021

check room&coil sensors

Carrier Heating... • Answered on Mar 02, 2021

There has to be a model number on that unit and it may be inside the unit. Without that information it would be nearly impossible to locate any information on it. Due to age and technology used, it may be better to replace it with something more modern.

Carrier Heating... • Answered on Feb 13, 2021

The limit switch on the inducer has tripped. There are two wires that go to a small disk about the size of dime that has a small button in the center. Push this little button and you will feel a littl snap and the unit should fire up. Check all the manual reset limits as well. If the unit still won't start, jump the two wires by bypassing the limit switch. If it starts, then replace the switch. Bypassing the switch is only temporary and could lead to death if it is used as a permenant fix.

Carrier XHB123D... • Answered on Jan 29, 2021

Is there a built-in humidifier? That would explain water in the reservoir. Is there a fill cap for the water reservoir?

Carrier Heating... • Answered on Dec 28, 2020

compressor failure overheating

Carrier Heating... • Answered on Nov 16, 2020

This appears to be a Roof Top packaged unit. You will definitely need some help with this install. Your local Carrier distributer should have the installation curb kits and economizer etc.

Here is the most technical data I can find for this unit. Under the 50TFF section you will see the accessory dimensions. I hope this helps. (You will need adobe acrobat to read the file)

Carrier XHB123D... • Answered on Nov 08, 2020

Switch OFF the circuit breaker of ac, after 5 seconds. Switched ON the circuit breaker. If this will appear again try to check the wiring connection of ac.

Carrier 36KCARMS... • Answered on Sep 23, 2020

E4 means return air sensor error, if the error cannot reset may be the return air sensor is out of range or defective. But if the sensor is ok you need to replace the control board itself. The reading of return air sensor is 8k to 10k ohms @ 25deg. C temperature.

Carrier XHB123D... • Answered on Jul 21, 2020

Well without a model number, I can tell you this. On some models, F3 indicates fan speed 3, which is high speed.If you push the mode button, these units will switch between f1, f2, f3 and smart fan. No problem. On others, F3 indicates a fan speed error, either something is keeping the fan from turning, or there is a bad or loose connection somewhere. On still other models, F3 indicates a freon leak or problem in the refrigerant circuit. If carrier made their own units, they would probably act the same, but they don't. Model number is important, since the unit could be a daikin, LG or Samsung under the skin...

Carrier Heating... • Answered on May 16, 2020

Error Code Definition: (Unit Size 36K - 42K) = IPM over temperature protection. Carrier AC Indoor Unit Displays Error Code: P9. Error Code Definition: (Unit Size 18K - 24K - 30K) = NA. Error Code Definition: (Unit Size 36K - 42K) = Open Contactor.

Carrier Heating... • Answered on May 07, 2020

FF code means blown or missing damper fuse. Replace damper fuse (inside equipment cover plate) and try again. If damper fuse blows again, find and fix the problem causing the fuse to blow.

Carrier Heating... • Answered on May 05, 2020

-When a blinking light problem occurs, your air conditioning system often shuts off too, meaning warm air is blown. You can switch off the circuit breaker of your AC unit, wait for a few seconds, and then switch it on again. For some, the unit will start working normally again.

Carrier Heating... • Answered on Apr 24, 2020

Not finding what you are looking for?
Carrier Logo

3,524 questions posted

Ask a Question

Usually answered in minutes!

Top Carrier Heating & Cooling Experts

Dan Webster
Dan Webster

Level 3 Expert

8221 Answers

Dennis Boxerman

Level 3 Expert

1305 Answers


Level 1 Expert

26 Answers

Are you a Carrier Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides