Troubleshooting steps
Check air filter clean or replace filter verify airflow
HVAC Error Codes
CH – Check filter
Filter needs to be checked or replaced
Details
Air filter may be dirty or clogged and needs attention.
Error typewarning
MeaningFilter maintenance
Typical causesDirty filter restricted airflow
SolutionsCheck air filter clean or replace filter verify airflow
Severitylow
Catalog references
Where this appears
TraneCH
Utilities
Copy-paste helpers
Browse More
Explore HVAC Error Codes
View all 526 hvac error codes codes
FAQ
Common questions
How often to change filter?
Typically every 1-3 months depending on usage and filter type.
Community
Discussion & Experiences
Share your experience, solutions, or ask questions about this error code. Help others troubleshoot!
Loading comments...