System Status and Maintenance Indicators (continued)
LOCKED Thermostat has been fully or partially locked.
See Locking and Unlocking thermostat, section 5.
SERVICE A user selectable service reminder for changing
the filter, UV bulb or humidifier pad has been
triggered. To set or reset these reminders, see
User Options, section 2.
NO POWER AC power to thermostat has been lost. Only available
if thermostat is hardwired and thermostat is configured
for power monitoring.
25 User Manual