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BillyHvac, Journeyman HVAC Tech
Category: HVAC
Satisfied Customers: 22541
Experience:  Endorsed for unlimited heating, cooling, oil burners, boilers, refrigeration, hydronics
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How do i reset a carrier infinity system lockout code 84,

Customer Question

how do i reset a carrier infinity system lockout code 84
JA: I'll do all I can to help. How long have you been dealing with this?
Customer: today
JA: Do you plan on doing the work yourself?
Customer: yes
JA: Anything else we should know to help you best?
Customer: the breaker was trip to the unit
JA: Did you double-check the thermostat? And what about the unit's filters?
Customer: no
Submitted: 10 months ago.
Category: HVAC
Expert:  BillyHvac replied 10 months ago.


My name is ***** ***** I will do my best to assist you. I am looking over your question now and will respond shortly.

Expert:  BillyHvac replied 10 months ago.

Were you running ac when this happened?

Customer: replied 10 months ago.
Expert:  BillyHvac replied 10 months ago.

Normally this is caused by high pressure of the refrigerant related to plugged coil or fan failure.

Since your breaker tripped...and the pressure tripped...odds are the fan in top failed and then compressor kept pumping until high head tripped.

Either the motor going bad can trip the breaker or the actually high head pressure. You will not be able to resume normal operation until you have the fan and compressor checked in outdoor unit.

Odds are you need a fan motor.