TSB C-GN-OT-0078 Before Replacing the Furnace Control Board: Troubleshooting Error Codes Nick Lehman July 16, 2025 16:45 TSB C-GN-OT-0078 Before Replacing the Furnace Control Board - Troubleshooting Error Codes.pdf 300 KB Download Related articles TSB C-GN-FN-0089 90+ Furnaces – Pressure Switch Changes TSB G-GN-OT-0074 Non-A2L Communicating Furnace Over-The-Air Update TSB C-GN-FN-0060 Furnace Twinning for R-32 Systems TSB C-GN-OT-0087 R-32 Compliant Communicating Furnace Updates TSB C-GN-OT-0083 RDS Control and Sensor Troubleshooting Comments 0 comments Article is closed for comments.
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