Windows discussions and local services.
Discussion options
One section of electrochromic glass darkens more than the rest
If one section of electrochromic glass darkens more than the rest while the control is calling for a normal tint level, what observations help narrow down the cause? Does the pattern change with a different control mode or as the pane warms or cools, and which manufacturer diagnostic indicators or checks are useful before asking for service?
Join the conversation
Share your experience or ask a follow-up question.
1 reply
Compare the commanded tint with what the manufacturer’s diagnostics report for that pane. A mismatch can help focus service troubleshooting on the control or its communication path. If the reported state matches the command but one area still looks darker, that comparison alone doesn’t identify the cause; the diagnostic display’s meaning varies by system, so use the manufacturer’s guide to interpret it.