Servicing Carrier VRF Part 3
Over the past 2 months, we have covered how to connect to a Carrier VRF with STT software and what…
Category: Technical Services
Defrost Board Troubleshooting
I want to go over the process of troubleshooting a heat pump defrost board. This includes checking for common issues.…
SystemVu Software Update
In today’s world of computers, smartphones, electronic devices they require updates for them to operate correctly. The same applies to…
Freeze Protection mode
With outdoor air temps dropping below freezing around Georgia and the southeast, there is a chance you have walked by…
Ecobee Setup
Ecobee thermostats provide multi-speed fan control to work with 2/4-pipe fan coil units with/without pipe sensors (24V systems only) and…
Servicing Carrier VRF Part 2
As service and installation technicians we need to be able to figure out problems or ensure a system is running…
VFD Replacement on 48-50P VAV Rooftop Units
You are on a no cool service call; the unit is a 50P VAV RTU and you have diagnosis that…
Intermittent or Elusive Issues
HVAC technicians often face challenges in pinpointing intermittent or elusive issues, as they can be harder to diagnose compared to…
Servicing Carrier VRF Part 1
You get to a school with a Carrier VRF system having issues. It’s large and intimidating. There’s an error code…
RTU Fan Speed Setup with RTU-Open Board using Equipment Touch
You have a commercial building with multiple roof top units (48/50LC) and the Test & Balance Company is telling you…
