ℹ
info Honeywell
Status Updating
The thermostat is installing a software update via Wi-Fi. The display shows the percentage of completion.
? What Causes This
Normal operation - Honeywell periodically issues automatic software updates.
ⓘ What This Means
Wait for the update to complete. Do not remove the thermostat from power. All settings are automatically saved.
Source: page 46 of the official manual
From the manual
This error code appears in:
Honeywell RTH6580WF Wi-Fi Smart Thermostat