Bosch EasyControl shows much higher room temperature than actual, so heating rarely comes on.

Safety first: Isolate power before removing the unit from the wall.

• 1. Check surroundings: Ensure there is no radiator, TV, or other heat source directly below or behind the EasyControl.
• 2. Avoid sunlight: If the unit is in direct sun for long periods, fit a shade or relocate it.
• 3. Seal warm air paths: Seal any gaps in the wall that may allow warm air from flues or appliances to reach the back of the thermostat.
• 4. Minor offset: Apply a small negative temperature offset if the difference is small and consistent.

Professional help: Persistent large over-reading suggests a faulty sensor; replace the EasyControl.