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Need Help with Honeywell Circular Chart Controller

Hello,

I have an older model Honeywell Circular Chart Controller model number AR53ADD0109. I am searching for the user manual for it, if anyone happens to have one or know someone who would have one, please contact me! The device has been having trouble keeping a stable temperature, but I don’t want to immediately get a new one without trying some troubleshooting first.

Thank you!
Sam Yuen on behalf of Larry Stark