Meross
Display Power Instability
Thermostat display is very dim, flickers, or backlight pulses when the relay switches.
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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.
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Possible Causes
Weak internal power supply capacitor, Loose neutral connection, Excessive electrical noise from load switching
How to Fix / Troubleshooting
Safety: Turn off power before removing the thermostat.
Steps:
- Check wiring tightness: Ensure live and neutral terminals are firmly tightened and that no strands are loose.
- Separate high-load wiring: Avoid bundling thermostat supply wires tightly with high-current cables that may induce noise.
- Test on different circuit: Temporarily power the thermostat from a clean circuit to see if flicker persists. If it does, the internal power supply or display driver is failing.
Resolution: Replace the thermostat if display instability continues despite solid wiring and a clean supply.
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Repair Difficulty
Medium
3/5
Required Part
Display Backlight Driver / Power Supply Capacitors
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