C010
GLAS
Firmware or Operating System Corruption
Thermostat shows C010 and screen becomes sluggish or unresponsive; some features may be disabled.
Advertisements
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Advertisements
Possible Causes
Interrupted firmware update, Power loss during system write, Internal flash memory wear on GLAS main board, Incompatible or failed firmware image
How to Fix / Troubleshooting
Safety: Low‑voltage only. Turn off HVAC power at the breaker if you remove the thermostat from the wall.
- Step 1 – Soft reboot: Remove the GLAS thermostat from the wall plate, wait 60 seconds, then reattach. Allow several minutes for the OS to fully boot.
- Step 2 – Check for update recovery: If prompted, allow GLAS to complete or retry a firmware update. Do not cut power during this process.
- Step 3 – Stable power: Ensure the HVAC system breaker is not tripping and that the 24 VAC transformer is stable. Fluctuating low‑voltage can corrupt writes.
- Step 4 – Factory reset: If the UI is still accessible, back up your schedule and perform a factory reset from Settings > Device > Reset. Reconfigure the thermostat.
- Step 5 – Replace thermostat: If C010 persists, the internal flash memory or main processor on the GLAS main control board is likely damaged. The board is not field‑serviceable; replace the thermostat assembly.
Advertisements
Repair Difficulty
Medium
3/5
Required Part
GLAS Main Control Board
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements