Contents
1. Safety Information 8
1.1 Safety Definitions 8
1.2 Safety Symbols 8
1.3 Symbols Used in the Instructions 8
1.4 Safety Precautions 8
2. Product Information 12
2.1 Product Information 12
2.2 Components 14
3. Technical Data 16
3.1 General Specifications 16
3.2 Dimensions 18
4. System Details 19
4.1 Setting the DIP Switches 19
4.1.1 Setting the DIP Switches 19
4.2 Measuring the Inlet Gas Pressure 23
4.2.1 Gas Pipe Sizing Tables (Referenced from 2012 National
Fuel Gas Code) 24
4.3 Gas Conversion 26
4.4 The Front Panel 32
4.4.1 LCD Display 32
4.4.2 Buttons 33
4.4.3 Turning the Boiler On or Off 35
4.4.4 Normal Operation 35
4.4.5 Error Display and RESET 37
4.4.6 Adjusting the Space Heating Temperature 37
4.4.7 Adjusting the DHW Temperature 38
4.4.8 Viewing Basic Information (For Homeowner) 39
4.4.9 Error occurrence history display 41
4.4.10 information display (for servicer) 42
4.4.11 Special Parameter mode 46
4.4.12 Resetting the Boiler (Factory Reset) 55
4.5 Version Display 55
4.6 Error Codes 55
4.7 Ladder Diagram 56
4.8 Electrical Diagnostic Point & Wiring Diagram 57
4.9 Key Components Description 60
4.9.1 PCB 60
4.9.2 High Limit Switch 61
4.9.3 Thermistor 62
4.9.4 Fan Motor 63
4.9.5 Flame Rod Assembly 64
4.9.6 Ignition Transformer 65
4.9.7 APS 66
4.9.8 Main Gas Valve 67
4.9.9 Burner 68
4.9.10 Flow Sensor 69
4.9.11 Primary Heat Exchanger 70
4.9.12 Secondary Heat Exchanger 71
4.9.13 DHW Heat Exchanger 72
4.9.14 Circulation Pump 73
4.9.15 3-Way Valve 74
4.9.16 Water Pressure Sensor 75
4.9.17 Auto feeder Valve 76
5. Troubleshooting 77
5.1 Error code classification 77
5.2 Error Code List 78
5.2.1 003Error 80
5.2.2 004Error 86
5.2.3 012Error 87
5.2.4 016Error 90
5.2.5 030Error 92
5.2.6 046Error 94
5.2.7 047Error 94
5.2.8 060Error 95
5.2.9 109Error 97
5.2.10 110Error 99
5.2.11 205Error 100
5.2.12 218Error 102
5.2.13 351Error 104
5.2.14 352Error 106
5.2.15 353Error 107
5.2.16 407Error 108
5.2.17 421Error 110
5.2.18 439Error 112
5.2.19 515Error 114
5.2.20 517Error 115
5.2.21 594Error 115
5.2.22 615Error 115
5.2.23 736Error 116
5.2.24 782Error 117
5.3 Troubleshooting guide by symptom 118
5.3.1 Noise 118
5.3.2 Water Temperature Issue 119
5.3.3 Circuit breaker operation 120
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