⚠
warning Honeywell
Error Code 183
Clean humidifier tank and replace water filter — the humidifier requires maintenance.
? What Causes This
Humidifier tank needs cleaning and water filter needs replacement.
✓ How to Fix It
Clean the humidifier tank and replace the water filter, or contact your dealer. Reset the timer by touching Dismiss on the thermostat screen after completion.
Source: page 28 of the official manual
From the manual
