The Infamous E1: Part 1
First, what is an E1 fault code? E1 is a ductless system communication fault between the indoor and outdoor units.…
Category: Technical Services
What’s Your Resistance?
When assisting with field calls, I ask this question in reference to electrical devices several times a day. The answers…
CADM Fault Code 3
What is fault code 3 on the Comfort Alert Diagnostic Module (CADM) and why am I getting nuisance trips? CADM…
Condensate Pump Replacement
We are finding ourselves with more and more VRF components that will require maintenance periodically. Example: a 40VMF Below are…
Alerts vs Alarms on the Comfort Link
Disclaimer- This article does not detail on how to reset alarms because a previous article was done on this already. You…
HVAC Safety
Safety is something we should think about and practice in almost everything we do. We get comfortable in our everyday…
The Unknown Soldier
Wondering why the VFD is called the Unknown Soldier? It is because it does a lot of work and goes…
Using the Navigator Tool
The Comfort Link Navigator is a great option for Comfort link products with faulty or non-responsive controllers. A lot of…
M#25VNA8 Troubleshooting Tips
The M#25VNA8 communicating unit has several devices that aid in the operation and protection of the unit. These devices are…
Ductless Line Set Sizing
When installing Carrier/Bryant Ductless (mini splits) units please refer to the installation manual for the particular model of the unit…
