Why is my heater not heating even though the power is on?

If the power light is on but the heater does not produce warmth, the most likely reasons are an inactive heating mode, a temperature setting that is too low, or a safety function preventing heat output. Do not keep cycling the appliance on and off if it smells hot, trips the power, or feels unstable.

1. Check the heat setting. Select low or high heat, or another heating level available on your model, then wait a short time to see whether warm air or radiant heat begins.
2. Adjust the thermostat upward. On thermostatic heaters, heating stops once the room reaches the set temperature. Raise the setting slightly above the current room temperature and observe the result.
3. If your model has an anti-frost or frost free mode, confirm that it is not simply maintaining a minimum temperature rather than heating continuously. Try a normal heat setting instead.
4. Look for a timer or schedule that may be limiting heat output. Cancel the timer or week programme temporarily and test the heater again.
5. Check that the heater is plugged directly into a suitable wall socket and that the socket itself works with another appliance. If the heater still does not warm up, stop using it.

If the issue remains unresolved or safe use is uncertain, contact the retailer or store where the product was purchased. The supplied product data shows that several Tristar heaters offer low and high heat settings, adjustable thermostats, anti-frost or frost free functions, and timer control.