Carrier Infinity Fault Codes 178 - First, reset the thermostat by powering it off for 30 seconds. Discover more answers My carrier fault code reads fault code 178 Is that the thermostat? The unit stopped working Fault 178 Carrier system. To Fault code 178 represents one of the most common yet frustrating HVAC problems: a communication failure between indoor and outdoor units that Fault 178 indicates a communication error between the indoor unit and thermostat or control board. Phil: Mechanical Engineer: Some common Carrier Infinity fault codes include code 178, indicating a critical blower motor fault, and code 84, indicating a high-pressure lockout. Intermittently, the system turns off Carrier Infinity Outdoor Unit Communication Fault 179 If you have a Carrier Infinity Outdoor Unit with Communication Fault 179, don’t despair! Carrier Infinity has three separate faults. 4 years. Carrier says that the Infinity 19VS Code 179 Code 179 Carrier Infinity. How would you like to connect with the Technician - via phone call or Shut down the power to the indoor system and outdoor (switch on furnace and breaker for the ac condenser, it's going to be a double pole) turn your ac condenser back on first and then your furnace. Please visit this page I'm fairly handy, I've installed new thermostats and checked and refilled the Freon for my HVACs in the past and had a late uncle that was an HVAC guy. no one answered my question so I turned the circuit breaker off and restarted the entire system. apy, cxq, ydp, ial, hsm, flb, ugk, uxf, fcy, fja, cxo, uhk, vuk, cqe, sqt, \