Thermostat shows E16 and reports over-temperature or safety shutdown

Safety first: Over-temperature warnings indicate a potential safety risk. Ensure no flammable materials are near heat sources.

• Check mounting location: If the thermostat is directly above a radiator, towel rail, or other heat source, relocate it to an interior wall away from direct heat and sunlight.
• Ventilation: Ensure the thermostat is not covered by curtains, furniture, or decorative covers that trap heat.
• Compare temperature: Use a separate thermometer to verify actual room temperature. If the thermostat reads much higher, its sensor may be faulty.
• Reset and monitor: Power-cycle the thermostat and monitor readings. If E16 recurs at normal room temperatures, replace the thermostat.