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3
When the alert icon appears, check
the error code with the table below to
determine the problem.
4
Snooze the alert.
5
Dismiss the alert.
Alerts codes
Number Alert/Reminder
170
Internal Memory Error
173
Thermostat
Temperature Sensor
Error
181
Replace Air Filter (1)
405
Low Battery Alert
407
Critical Low Battery
Definition
The memory of the thermostat has encountered an
error. Please replace the thermostat.
The sensor of the thermostat has encountered an
error. Please replace the thermostat.
Replace air filter (1). Reset the timer by touching
the "dismiss" button on thermostat screen after it is
replaced.
The batteries are getting low. Replace them within
two months.
The batteries are almost depleted and should be
replaced as soon as possible.
17
RTH7400/RTH7500 Series
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