Wiser Room Thermostat or TRV is physically loose on the wall or valve, causing poor readings or mechanical noise.

Safety: Isolate mains power before adjusting any mains-powered wall plates.

• Secure wall thermostat: Remove the thermostat from its backplate and tighten the mounting screws into suitable wall plugs.
• Check TRV adapter: Confirm the correct adapter is used and is tightened firmly to the valve body.
• Replace worn parts: If threads on the TRV or adapter are stripped, replace the affected component.

Proper mechanical fixing is essential for accurate sensing and quiet operation.