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Table 7. Alert Codes and Troubleshooting
Alert
Code
Priority Condition
Actual Displayed
Alert Text Under
dealer control center
> Notifications
Component or System Operational
State and Troubleshooting Tip
How to clear
alert code
29
Service Urgent
Over Temperature
Protection
The thermostat is reading an indoor temperature that
is higher than 90ºF (factory default). The thermostat
will not allow any heating operation to begin until it
senses an indoor temperature lower than 90ºF. Indoor
temperature rose above 90ºF during a heating or
cooling demand.
• Heating operation is not allowed.
• Check to ensure that heating equipment is not
stuck ON (reversing valve, etc.)
• Check the accuracy of the thermostat temperature
sensor.
• Select cooling system mode to cool the indoor
space below 90ºF.
Automatically clears when
the system detects that the
issue no longer exists.
30
Service Urgent
Low Temperature
Protection
The thermostat will not allow any cooling operation
to begin until it senses a temperature higher than
40ºF.
• Cooling operation is not allowed.
• Check to ensure that cooling equipment is not
stuck ON.
• Check accuracy of the thermostat temperature
sensor.
• Select heating system mode to heat the indoor
space to above 40ºF.
Automatically clears when
the system detects that the
issue no longer exists.