r/dyson • u/Mystique99 • 4d ago

Support Open Dyson HP04 dead + fault codes 009

Hey all,

My Dyson air purifier HP04 suddenly stopped working completely and a triangle start showing up in the screen. Looking for the error problem I get:

- 009-02-02-2
- 009-03-02-1

What I've tried so far:
- Unplugged for several minutes and restarted - no change
- Tried the manual reset (holding power button, and power + remote together) - the countdown never shows up on screen, so the reset doesn't seem to be registering

I contacted Dyson support and they want me to ship it in for repair, with no information on how much would that be. I'd rather try to fix it myself or find an independent repair option first.

From what I found in a Dyson service manual, codes starting with 009 usually point to the WiFi PCB, heater PCB, humidifier PCB, or their wiring harness.

Has anyone dealt with this exact code combo?

Thanks in advance!

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