Service manual - Logamax plus GB142 (USA/CA) - en - Buderus

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PrefaceAbout these instructionsThese Servicing Instructions contain important information todiagnose and resolve issues concerning the GB142 boiler withcapacities 24, 30, 45 and 60 kW.These Servicing Instructions are intended for specialist installers,who have the necessary training and experience for workingon heating and gas systems.Subject to technical changes!Slight changes may be made to the illustrations, process stepsand technical data as a result of our policy of continuousimprovement.Updating of documentationPlease contact us if you have any suggestions for improvementsor corrections.2Logamax plus GB142-24/30/45/60 - We reserve the right to make any changes due to technical modifications!
Page 1: Servicing instructionsCondensing ga
Page 8 and 9: 3Product description3 Product descr
Page 10 and 11: 4Operation4.2.1 "Flue gas test" men
Page 12 and 13: 4Operation4.2.3 "Manual Operation"
Page 14 and 15: 5Function5 Function5.1 GeneralTo cl
Page 16 and 17: 5Functionpage 1520HOperating code.T
Page 18 and 19: 5Functionpage 1840AThe gas valve is
Page 20 and 21: 6Symptoms6 Symptoms6.1 Display indi
Page 22 and 23: 6SymptomsSymptomszMaindisplaycodeDi
Page 24 and 25: 6SymptomszMaine [4/y/\| e [2/2/3| e
Page 26 and 27: 6SymptomszMaine [a/0/1| e [8/1/6| e
Page 28 and 29: 7DiagnosisNo displayNo indication i
Page 30 and 31: 7DiagnosisNo display, part 2page 28
Page 32 and 33: 7DiagnosisNo display, part 4No disp
Page 34 and 35: 7DiagnosisNot hot water, branch 001
Page 36 and 37: 7DiagnosisRepl. BBpage 3421Check th
Page 38 and 39: 7Diagnosispage 3647Check that the c
Page 40 and 41: 7DiagnosisRepl. CCpage 3916Check th
Page 42 and 43: 7DiagnosisHot water but no central
Page 44 and 45: 7Diagnosispage 3650Check that the c
Page 46 and 47: 7Diagnosis7.2 Faults with a fault c
Page 48 and 49: 7Diagnosisde 2E1L 21 1The UBA 3 doe
Page 50 and 51: 7DiagnosisLocking boiler fault code
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7DiagnosisOperating code 2P2P 21 2T
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7DiagnosisBlocking boiler-fault cod
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7DiagnosisLocking boiler fault code
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7DiagnosisLocking boiler-fault code
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7Diagnosisvorh6A Branch 036A Branch
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7Diagnosis6A Branch 06page 6633Chec
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7DiagnosisOperating code 8Y dl 2pag
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8Actions8 Actions8.1 Testing, measu
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8Actions8.1.3 Checking the fan unit
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8Actions8.1.5 Checking the fan unit
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8Actions• Disconnect the plug and
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8Actions8.1.10 Checking the supply/
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8Actions• Test the supply cord of
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8Actions• Test the ionization cab
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8Actions8.1.18 Checking the gas con
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8ActionsPin 81Pin 1KIM81-pole conne
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8Actions• Remove both cable plugs
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8ActionsNOTICE!Carry out all start-
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8Actions• Fit the cover on the ex
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8Actions8.1.26 Measure and adjust t
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8Actions• Loosen the 2 external c
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8Actions• Remove the plastic cove
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8Actions• Loosen the union nut of
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8Actions8.1.32 Condensate trap; rep
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8Actions• Loosen the union nut of
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8Actions• Disassemble the supply
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8Actions• Remove the condensate c
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8Actions• Remove the flue gas ada
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1459Appendix9 AppendixWARNINGLabel
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10Spare parts10 Spare partsBelow is
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10Spare partsExploded view Logamax
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Unites States and CanadaBosch Therm
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Service manual - Logamax plus GB142 (USA/CA) - en - Buderus

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