19
TROUBLESHOOTING
COMMON PROBLEMS
The following table lists the most common problems and alerts you may encounter with your
thermostat. If your problem is not listed in this table, or if the proposed solution does not solve
the issue, please visit our support site or contact our customer service team:
www.stelpro.com/allia/support
1-844-STELPRO (783-5776)
elec.tech@stelpro.com
PROBLEM
SOLUTION
flashing
The heating system is overheating. Inspect your heating system and replace
it if it is defective.
flashing
The thermostat has detected that a window is open. Close the window or
deactivate the open window detection. See page 17.
flashing
There is an issue with the thermostat's Zigbee network. Reset the thermostat
and reconnect it to the hub. See page 18.
LO
Room temperature is below 0°C (32°F). Heating will remain active until the
temperature reaches the setpoint temperature. LO disappears when the
temperature reaches 0°C (32°F).
HI
Room temperature is above 50°C (122°F). Heating will remain inactive. HI
disappears when the temperature reaches 50°C (122°F).
--
The thermostat cannot measure the temperature (defective temperature
sensor). Replace the thermostat.
NOTE: This alert may also be displayed temporarily immediately after a reset. It should
disappear automatically after about 10 seconds.
