Sensor A is downgraded, but Sensor B is stuck at zero

FAQ Sensors
1

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Hi @Gordon

Thanks for letting us know. This is a mistake that our system can make when automatically downgrading channels. I’ve gone ahead and switched those downgrades around, so now channel B is downgraded. If this is your sensor and you’re interested in troubleshooting, you can reach out to us at contact@purpleair.com.

3

Hi Kieran

Thanks for the prompt action and response. It is my sensor. I’m at another location now, but I will be back at South Fork next week, and will check for any obvious problems.

4

Shop vac and canned “air” did not help. But after opening sensor and scraping out a dense spider web, on August 29, Sensor B is now working again. Can you reset Sensor B downgrade? Thanks.

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5

Hi @Gordon

Thanks for letting us know. I’ve gone ahead and removed the downgrade on Channel B.