Room thermostat not working
Not sure if this matches your problem?
Use our interactive tool — answer a few questions and get a personalised diagnosis.
Most likely cause & what to check
Check the thermostat batteries if it's wireless — replace them as a first step even if the display looks fine.
Check the temperature setting — it should be set above the current room temperature to call for heat.
Check the programmer/timer has heating scheduled for the current time period.
For wireless thermostats: check the signal between the thermostat and receiver. The receiver is usually mounted near the boiler and should have a light showing when heat is called.
For wired stats: turn off the power and check the wiring connections at the thermostat are secure.
If the thermostat is over 10 years old and showing erratic behaviour, replacement is often the most cost-effective solution. Modern smart thermostats (Hive, Nest, Tado) are DIY-installable.
🛠 Tools & materials you may need
🔗 Some links above are affiliate links — if you buy through them we earn a small commission at no extra cost to you. This keeps the site free.
Get a vetted local engineer to handle it — no hassle, Gas Safe registered.
Was this guide helpful?