Indoor TXV Failure in Heat Mode
This article is in reference to Residential Heat Pumps. Everyone in the HVAC industry knows that the indoor TXV…
Author: Steven Simmons
Technical Services Manager
Southwest District
Speedy Maintenance: Split Heat Pump Fall Check Sheet
Today’s article is a guideline to help new technicians develop a speedy routine while doing fall maintenance on heat pumps.…
Diagnosing a Broken Common Wire to the Outdoor Unit
This article is in reference to residential HVAC equipment but can apply elsewhere. You would think that a broken wire…
Missing Serial Numbers on Infinity/Evolution User Interfaces
Have you ever noticed that (inside the software) some User Interfaces (UI) have serial numbers listed, and some don’t? Why…
Defrost in Cool Mode
This article is in reference to typical Carrier, Bryant, Payne, and WeatherMaker Heat Pumps. Beware of the defrost cycle in…
TXV Ice Bath
Have you ever seen a stuck TXV? Carrier typically uses hard shutoff valves on their equipment. A hard shutoff TXV…
Finding Manuals Without an Account
Carrier/ Bryant/Heil has a website that houses all theirmanuals. This includes install, product data, product submittal, service manuals, accessory kit,…
Furnace Code 12
Also known as code 121 on 2023+ furnaces When you are servicing a furnace whether it is for seasoning cleaning…
Wiring Tip for Zoning
When a house has zoning, it feels like there are wires going everywhere! And if you suspect that some of…
Infinity/Evolution Inverter Units
When it comes to working on the infinity/evolution systems, there are several inverter-driven outdoor units. They all have nicknames, different…