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We take accuracy seriously. If you've spotted an error, have a question about a code, or want us to cover a specific brand or fault, we'd like to hear from you.
Spotted something wrong in a guide? Tell us which code and brand and what you saw. Corrections to safety-related content are our top priority.
We can't diagnose your system over email.
For an active fault on your equipment, please use the guide for your code and, when in doubt, contact your installer or the manufacturer's official support. See our safety disclaimer.