Diagnosing and Correcting a Heat Pump That Will Not Enter Defrost
Imagine that you receive a call from a customer stating that their heat is not working. Upon inspection you find…
Category: Technical Services
ICP Furnace Showing 80% Limit Fault
Most gas furnaces have several safety limits, main limits, roll-outs, 80%’s will have a DSS (Daft Safety Switch) These safety…
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…
Compressors Problems & Troubleshooting
Compressors are the heart of the refrigeration system. It creates the pressure difference to move the refrigerant through the system.…
R-454B & R-410A Refrigerants: Are They The Same?
You have probably gone to classes, listened to podcast or read articles about the phase out of R-410A, and the…
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.…
Why am I getting a 25 Fault Code?
When a Bryant furnace displays Error Code 25, it indicates that the control board has detected a configuration mismatch between…
How to Program an NFC Control Board
When replacing a control board equipped with Near Field Communication (NFC) capabilities, it’s critical to ensure that the new board…
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…
Puron Advanced (R-454B) Refrigerant Dissipation Board Flash Code 13
With the changing of the new refrigerant, new controls have been added for safety incase of a refrigerant leak, the…
