Dyson fan not turning on

Defective PCB most likely.

Check the fans cord. There might be damage to it. Try another outlet it could be the outlet the fan is plugged into. If you see no physical problems with fan. I would enter the serial number in dyson support and see if they will replace the fan. Here is dyson's support page to get started. http://www.dyson.com/support.aspx

There is a little arm attached to the motor that makes the fas oscillate. If it gets disconnected you will have that issue. Check the linkage.

Turn the power off and unplug the machine for 60 seconds. Plug the machine back in and turn power on. Repeat this process up to 3 times until the F4 error code has cleared.

Hi Deborah, it's Jack at Dyson.

It's likely the '33' you see displayed on your machine is the target temperature you've selected, as the fan speed goes from 1-10.

If you've selected 33 degrees as the target, your heater will only activate if the ambient room temperature drops below 33 degrees. It would then continue to run until the temperature reaches 33 degrees once again. The intelligent thermostat is engineered to heat the room to the desired temperature, then to run as needed to maintain this temperature.

If you want the heater function to run, try increasing the target temperature degree by degree until the machine comes on. But if you want to use the fan-only function in warmer weather, turn the target temperature down to 0. The LED indicator around the on/off switch will turn blue, and the machine will run in fan-only mode to cool you down with unheated airflow.


I hope this information helps. If you'd like further help or advice from our experts, you're welcome to call the Dyson Customer Helpline directly on 0800 298 0298 (UK), 1-866-693-9766 (US), 1-877-397-6622 (CA) or 1800 239 766 (AU).

Hi there, it's Jack at Dyson.

To run your Dyson Hot + Cool heater on fan mode, you need to turn the target temperature down to 0 degrees using either the remote, or the controls on the base. The target temperature is shown on the LED display on the front of the heater. When fan mode is activated the light around the on/off button will turn from red to blue.


I hope this helps, but if you'd like any further advice you're welcome to contact our experts 0800 298 0298 (UK), 1-866-693-9766 (US), 1-877-397-6622 (CA) or 1800 239 766 (AU).

Hi Charlie, it's Jack at Dyson.

When you adjust the target temperature of your Dyson Hot fan heater (shown on the LED display on the base), you're setting the target temperature you would like the room heated to. The actual temperature of airflow produced by the fan heater will not vary.

If the heater won't run below 24 degrees, this is likely to be because the temperature of the room you're in is equal to or warmer than 24 degrees. The heater will only turn itself on if the temperature drops below 24 degrees, and once the room temperature reaches this target once again, the fan will turn itself back to monitoring mode.

I've attached our Getting started video below which shows how to adjust the temperature, using the remote or the controls on the base.

I hope this makes sense. It sounds as if your machine is working correctly, but if you'd like any further advice from our experts you can reach us at 0800 298 0298 (UK), 1-866-693-9766 (US), 1-877-397-6622 (CA) or 1800 239 766 (AU).