Universal H Series Troubleshooting Guide
Page 3
.... "AO" Code 58-60 Heat Exchanger: Flow requirements 61 Heat Exchanger: Inspection 62 Heat Exchanger: Potential Failure Causes 63 UHS Wiring Schematic 64 UHS Wiring Diagram 65 3 Open FC3&/F1 Fuse 29-31 4. Open FC4 Fuse 32-33 5. "PF" Code Pg. 18-64 38-39 40-41 42-43 10. "LO... How To: Pg. 12-17 Program Heater Bypass & Temperature Lockout 13-15 Test/Adjust Gas Pressure 16-17 Troubleshooting: Pg. 18-64 Diagnostic Codes and Part Numbers 19-20 1. "BD" Code 34-35 6. "IO" or "SB" Code 8.
.... "AO" Code 58-60 Heat Exchanger: Flow requirements 61 Heat Exchanger: Inspection 62 Heat Exchanger: Potential Failure Causes 63 UHS Wiring Schematic 64 UHS Wiring Diagram 65 3 Open FC3&/F1 Fuse 29-31 4. Open FC4 Fuse 32-33 5. "PF" Code Pg. 18-64 38-39 40-41 42-43 10. "LO... How To: Pg. 12-17 Program Heater Bypass & Temperature Lockout 13-15 Test/Adjust Gas Pressure 16-17 Troubleshooting: Pg. 18-64 Diagnostic Codes and Part Numbers 19-20 1. "BD" Code 34-35 6. "IO" or "SB" Code 8.