Carrier Infinity 27VNA3 - Utility Interface with Infinity Control; Infinity Control, Green Communications (COMM) Light

27VNA3 Infinity® Variable Speed Heat Pump: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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Utility Interface With Infinity® Control
The utility curtailment relay should be wired between the two UTIL
connections on the control board for this Infinity® Communicating
System (see Fig. 30). This input allows a power utility device to
interrupt compressor operation during peak load periods. When the
utility sends a signal to shut the system down, the Infinity® System
Control will display “Curtailment Active”. See Infinity® System
Control installation instructions for setup details.
Infinity® Control, Green Communications (COMM)
Light
A green LED (COMM light) on the outdoor board (see Fig. 31) indicates
successful communication with the other system products. The green
LED will remain OFF until communication is established. Once a valid
command is received, the green LED will turn ON continuously. If no
communication is received within 2 minutes, the LED will be turned
OFF until the next valid communication.
A230529
Fig. 30 – Control Board with Optional Utility Relay
HK38EA069
Fig. 31 – Primary Control Board
VFD-PCM
Communication Port
VFD LED (Red / Green)
CCN Communication
LED (Green)
Status LED
(Yellow)