Service Manual Logamax Plus GB142 (USA/CA) En 72149400 07 Instructions 12.2011 US
User Manual: Pdf
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Page Count: 132 [warning: Documents this large are best viewed by clicking the View PDF Link!]
- 1 Safety and general instructions
- 2 Regulations and guidelines
- 3 Product description
- 4 Operation
- 5 Function
- 6 Symptoms
- 7 Diagnosis
- 8 Actions
- 8.1 Testing, measuring, adjusting and replacing various components
- 8.1.1 Checking the UBA 3 fuse; replace if necessary
- 8.1.2 External connection board fuse
- 8.1.3 Checking the fan unit; 120 VAC control
- 8.1.4 Checking the fan unit; supply cord (120V AC)
- 8.1.5 Checking the fan unit; tacho cable
- 8.1.6 Replacing the fan unit
- 8.1.7 Checking the supply/return/safety/hot-water temperature sensors
- 8.1.9 Checking the hot-water temperature sensor
- 8.1.10 Checking the supply/return/safety sensors cable
- 8.1.11 Checking the hot surface ignitor; control
- 8.1.12 Checking the hot surface ignitor; resistance
- 8.1.13 Checking the hot surface ignitor; supply cord
- 8.1.15 Testing the ionization current
- 8.1.16 Checking the ionization electrode; cable
- 8.1.17 Checking the ionization electrode; replace if necessary
- 8.1.18 Checking the gas control valve; cable connections
- 8.1.20 Checking the gas control valve; cable connection between gas control valve and UBA 3 installation base
- 8.1.21 Ohming out the gas control valve
- 8.1.22 Replacing the gas control valve
- 8.1.23 Checking the control unit; connections to the boiler
- 8.1.24 Bleed the gas supply pipe
- 8.1.25 Measuring the inlet gas pressure (flow pressure)
- 8.1.26 Measure and adjust the gas/air ratio
- 8.1.27 Measuring the carbon monoxide content (CO)
- 8.1.28 Transformer; replacing
- 8.1.29 Automatic air purging system; replacing
- 8.1.30 Burner; replacing
- 8.1.31 Sight glass; replacing
- 8.1.32 Condensate trap; replacing
- 8.1.33 Pressure sensor; replacing
- 8.1.34 Heat exchanger; replacing
- 8.1.35 UBA 3; replacing
- 8.1 Testing, measuring, adjusting and replacing various components
- 9 Appendix
- 10 Spare parts