Tumble dryer keeps telling me to clean heat exchanger

[RCully]

I have a DV90T.... model tumble dryer which tells me the cycle is complete by sending a message to my iPhone

Every time a message arrives, a second one arrives telling me to clean the heat exchanger - which I have done many times with the supplied brush and also a vacuum cleaner.

But the messages keep on coming.  Any ideas?

[xSteveuk · Accepted solution]

Hi,
This page maybe helpful

How to clean the heat exchanger on a dryer

https://www.samsung.com/uk/support/home-appliances/how-to-clean-the-heat-exchanger-on-a-dryer/

Have tried
Turning off dryer
Unplug it
For about a minute
Plug in and turn on dryer

I believe the messages
Are preset as reminders

[RCully]

Steveuk, Thanks for quick response.  I had already cleaned the heat exchanger as described in the instructions but what I hadn't done is the old trick of turning off and on.

This has done the trick (and, by the way, the warning only comes on when it is necessary to do it).

Thanks again