E10
Mysa Display Power / Backlight Driver Fault

Thermostat shows E10 and the screen is dim, flickering, or randomly turning off.

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

Failing internal low-voltage power supply, Defective LCD/OLED backlight driver, Loose display ribbon connector on PCB

How to Fix / Troubleshooting

Safety first: Turn OFF power at the breaker before removing the thermostat from the wall.

Steps to inspect:

  • Check for overheating: After turning power off and removing the thermostat, inspect the back of the unit for discoloration or burnt smell near the power supply components.
  • Gently press around display bezel: With power restored, lightly press around the edges of the display (without removing the cover) to see if flicker changes, which can indicate a loose internal connector.
  • Power cycle: Turn the breaker OFF for 2 minutes, then ON, and observe if the display stabilizes.

Because the display and its driver are integrated into the main assembly, user-level repair is not feasible. If E10 persists and the display remains unstable, replace the thermostat.

Advertisements

Repair Difficulty

Medium 3/5

Required Part

Display Module / Main Control Board
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements