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281 Issue 1 - Service Manual - BX3

5.9 Eight Flashes – Frequency Lockout ........................................................ 21

5.10 Nine Flashes - Flame Lockout Invalid Flame ......................................... 22

5.11 Ten Flashes – False Flame ................................................................... 22

5.12 Eleven Flashes - SafeStart Lockout ...................................................... 22

5.13 Twelve Flashes – Secondary Fafeguard Timing Fault ........................... 22

5.14 Three Slow Flashes – Ground Fault Lockout ......................................... 23

5.15 Three Slow Flashes - Ground Fault Lockout.......................................... 23

5.16 Three Slow Flashes - Ground Fault Lockout.......................................... 24

6.0 MAIN COMPONENTS SERVICING ........................................................ 25

6.1 Gas Valve Servicing ................................................................................ 25

6.2 Combustion Fan Servicing ...................................................................... 27

6.3 Spark Igniter Servicing ............................................................................ 28

6.4 Flame Sensor Servicing .......................................................................... 28

6.5 Pressure Switch Servicing ....................................................................... 29

6.6 Main Fan Assembly Servicing ................................................................. 29

6.7 Unit Operation ......................................................................................... 30

7.0 DISMANTLING PROCEDURES .............................................................. 31

7.1 Burner Assembly Removal ...................................................................... 31

7.2 Gas Manifold Assembly Removal ............................................................ 31

7.3 Gas Valve Removal ................................................................................. 32

7.4 Pressure Switch Assembly Removal ....................................................... 32

7.5 Combustion Fan Removal ....................................................................... 32

7.6 Main Fan Assembly Removal .................................................................. 34

7.7 HCDSI24-1 Electronic Control Board Removal ........................................ 35

7.8 240 to 24 Volt Transformer Removal ....................................................... 35

7.9 Heat Exchanger Removal ........................................................................ 36

8.0 Flue Instructions ...................................................................................... 38

Brivis BX3 User Manual

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