Hive thermostat or receiver feels unusually hot to the touch

Safety first: If the device is very hot or you smell burning, switch off power immediately at the fused spur or consumer unit and do not use the system until inspected.

• Check ventilation: Ensure the thermostat and receiver are not covered by curtains, furniture, or other objects that trap heat.
• Reduce load: Confirm that the receiver is only switching the boiler control circuit, not directly powering pumps or large loads beyond its rating.
• Monitor temperature: After restoring power, monitor the device. Mild warmth is normal; excessive heat is not.
• When to call a pro: Any sign of scorching, discoloration, or persistent overheating requires immediate professional replacement of the affected unit.