4 Contents
Contents
1. Safety Information 7
2. Product Information 12
2.1 Product Information 12
2.2 Components 13
3. Technical Data 17
3.1 General Specifications 17
3.2 Dimensions 19
4. System Details 20
4.1 Setting the DIP Switches 20
4.1.1 PCB DIP Switches 20
4.1.2 Front Panel DIP Switches 20
4.2 Measuring the Incoming Gas Pressure 20
4.3 Gas Conversion 22
4.4 The Front Panel 27
4.4.1 Icons and Digital Display 27
4.4.2 Buttons 28
4.4.3 Turning the Boiler On or Off 29
4.4.4 Set-Up Wizard 29
4.4.5 Adjusting the Temperature 29
4.4.6 Resetting the Boiler 30
4.4.7 Accessing Basic Menu Items 31
4.4.8 Accessing Advanced Menu Items 36
4.5 Electrical Diagnostic Contacts and Wiring Diagram 41
4.6 Ladder Diagram 42
4.7 Key Component Descriptions 43
4.7.1 PCB 43
4.7.2 High Temperature Limit Switch 44
4.7.3 Thermistor 45
4.7.4 Fan Motor 46
4.7.5 Flame Rod Assembly 47
4.7.6 Ignition Transformer 48
4.7.7 APS 49
4.7.8 Main Gas Valve 50
4.7.9 Burner (to be revised) 51
4.7.10 Flow Sensor (to be revised) 52
4.7.11 Primary Heat Exchanger 53
4.7.12 Secondary Heat Exchanger 54
4.7.13 DHW Heat Exchanger 55
4.7.14 Circulation Pump 56
4.7.15 3 Way Valve 57
4.7.16 Water Pressure Sensor 58
4.7.17 Dual venturi 59
4.7.18 Expansion tank 60
5. Troubleshooting 61
5.1 Error Code Classification 61
5.2 Error Code List and Actions 62
5.2.1 Error 001 65
5.2.2 Error 003 67
5.2.3 Error 004 73
5.2.4 Error 012 74
5.2.5 Error 016 77
5.2.6 Error 030 79
5.2.7 Error 031 80
5.2.8 Error 046 81
5.2.9 Error 047 81
5.2.10 Error 060 82
5.2.11 Error 109 84
5.2.12 Error 110 86
5.2.13 Error 205 88
5.2.14 Error 218 90
5.2.15 Error 302 92
5.2.16 Error 352 93
5.2.17 Error 353 94
5.2.18 Error 407 95
5.2.19 Error 421 97
5.2.20 Error 515 99
5.2.21 Error 517 100
5.2.22 Error 594 100
5.2.23 Error 615 100
5.2.24 Error 740 101
5.2.25 Error 782 101
5.3 Troubleshooting guide by symptom 102
5.3.1 Noise 102
5.3.2 Water Temperature Issue 103
5.3.3 Circuit breaker operation 104
6. Replacement of Parts 105
6.1 Replacement Procedure 105
6.2 Components Replacement Instructions 105
6.2.1 PCB 105
6.2.2 Fuse 106
6.2.3 Fan Motor (Combustion Air) 107
6.2.4 Flame Rod 108
6.2.5 Ignition Transformer 108
6.2.6 APS 109
6.2.7 Main Gas Valve 109
6.2.8 Condensate Trap 110
6.2.9 Circulation Pump 111
6.2.10 Flow Sensor 111
6.2.11 3-way Valve 112
6.2.12 Water Pressure Sensor 112
6.2.13 DHW Heat exchanger 113
7. Components Diagram and Part List 114
7.1 Case Assembly 114
7.2 Burner Assembly 115
7.3 Waterway Assembly 116
8. Inspection and Maintenance Schedule 117
8.1 Annual Servicing 117
8.2 Maintenance Report 117
8.3 Maintenance Schedules 117
8.4 Inspection Report 117
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