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MODULEX EXT 321, 481, 641, 802, 962, 1123 BOILERS
Installation, Operation & Maintenance Manual
CHAPTER 6: TROUBLESHOOTING ............................................................................................... 113
6.1 E8 Controller Error Codes ................................................................................................................................ 113
6.1.1 E8 Controller Fault Codes ..................................................................................................................... 114
6.1.2 BCM (Boiler Communications Module) Fault Codes ............................................................................. 117
6.1.3 BMM (Burner Management Module) Fault Codes ............................................................................... 118
CHAPTER 7: INSPECTION AND MAINTENANCE SCHEDULE ...................................................... 121
7.1 Instructions for Inspection And Maintenance ................................................................................................. 122
7.2 Periodic Examination Of Venting System ........................................................................................................ 122
7.3 Proper Procedure For Cleaning Exhaust Flue .................................................................................................. 122
7.3.1 Cleaning the Condensate Drain Line ..................................................................................................... 123
7.4 Checking CSD-1 Manifold Flow Switch ............................................................................................................ 123
7.5 Visual Inspection Of The Flame ....................................................................................................................... 124
7.6 Proper Reassembly and Resealing of the Vent-Air Intake System................................................................... 124
7.7 Pressure Switch Hoses And Connections ......................................................................................................... 125
7.8 Burner / Heat Exchanger Cleaning Procedure ................................................................................................. 126
7.9 Heat and Return Sensor Resistance Values ..................................................................................................... 126
7.10 Unit Disassembly ........................................................................................................................................... 126
7.11 Cleaning the Burner Module and Combustion Chamber............................................................................... 134
7.12 Reassembly of the Burner Modules............................................................................................................... 136
7.13 Final Procedures After Maintenance ............................................................................................................. 136
7.14 Maintenance Kit Part Number ....................................................................................................................... 137
7.15 Accessory Kit Part Numbers........................................................................................................................... 138
CHAPTER 8: SPARE PARTS DRAWING AND LISTS .................................................................... 139
AERCO/MODULEX STANDARD WARRANTY ................................................................................... 147
Page 6 of 148
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
OMM-0087_0E
12/01/14
Phone: 800-526-0288
GF-143
