ℹ
info Honeywell
Status Cool On
Cooling system is activated and running.
? What Causes This
Indoor temperature has risen above the set cooling temperature.
ⓘ What This Means
This is normal operation when cooling is needed. No action required.
Source: page 7 of the official manual
From the manual
This error code appears in:
Honeywell Th8320U1008 Thermostat