“I bought a Dyson pure hot+cool HPO4. Why do I keep getting an error code of an exclamation point inside a triangle and it shuts off?”
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Hi there Buck, this is Tia from Dyson. Sorry to hear of the error code you're experiencing on the HP04 purifier. What you have described seems to be a sensor fault and unplugging/re-plugging the unit should reset and resolve the issue. If further Dyson troubleshooting assistance is needed, please don't hesitate to reach our support team at [email protected]. Thank you for choosing Dyson technology! Best wishes, Tia Dyson Customer Support
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