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Covers major hazards like fire, explosion, electrical shock, and carbon monoxide.
Addresses hazards like bypassing controls, manual lighting, and chemical exposure risks.
Covers warnings related to venting, overheating, electrical shock, and combustible storage.
Warns about UV light damage and details safe venting for CO prevention.
Essential safety practices and general guidelines for furnace installation.
Procedures for managing fault codes, including viewing, clearing, and resetting to defaults.
Index of error codes and their flowcharts, plus IFC component layout reference.
Flowchart for initial diagnosis, checking power, wiring, and fault codes.
Troubleshooting steps for flame sensing issues and gas pressure verification.
Troubleshooting for flame sensed then lost or gas valve pressure issues.
Troubleshooting for errors where the pressure switch is closed when it should be open.
Troubleshooting for errors where the pressure switch is open when it should be closed.
Troubleshooting for limit switch trips, blower motor, and reverse flow switch issues.
Troubleshooting steps for flame rollout faults, including burner and venting checks.
Troubleshooting for flame sensed without call, and gas supply issues.
Troubleshooting for incoming high voltage polarity and ground connection issues.
Troubleshooting for igniter circuit issues, including relay faults and resistance.
Troubleshooting for external gas valve circuit errors with 24 volts present.
Troubleshooting for low flame sense current, including sensor location and connections.
Troubleshooting for IFC internal gas valve relay failures and onboard fuse issues.
General