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

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7DiagnosisBlocking boiler-fault code 6L branch 13page 7339Check whether the gas stop tap is fully open.See page 101.Is the gas stop tapfully open?YesCheck to see if there is a blockage in the gasconduit section between the gas stop tap andgas valve.NoOpen the gas stop tap. See page 101.Did you find a blockage?NoCheck for blockages in the remaining sectionof the gas supply pipe.YesDeal with blockage.Did you find a blockage?NoCheck whether the overall gas-conduitnetwork is of sufficient capacity.YesDeal with blockage.Is the overall gas-conduitnetwork of sufficient capacity?NoReinforce the gas-conduit network.YesConsult the gas utility company.41page 7776Logamax plus GB142-24/30/45/60 - We reserve the right to make any changes due to technical modifications!
Diagnosis 7Blocking boiler-fault code 6L branch 14page 7442Check the plug-and-socketconnection between the ionization electrodeand cable loom. See page 95.Is the plug-and-socketconnection okay?YesMeasure the resistance in the wires betweenthe ionization electrode plug and the UBA 3mounting base. See page 99.NoCorrectly insert the plug into its socket.Is the wiring okay?YesReplace the ionization electrode.See page 97NoReplace the cable loom or the affected partthereof.41page 77page 73 – page 7741Press the "Reset" button.Has a new fault codeoccurred?NoYesHas a new locking boiler faultcode occurred?6LNoRemedy the fault using the structure diagramthat corresponds with the fault code.YesDid yougo through all structure diagramsthru 14?YesNo44page 2944page 838page 31locking boiler fault code 6L Zijtak 1e 5Logamax plus GB142-24/30/45/60 - We reserve the right to make any changes due to technical modifications! 77
Page 1 and 2:
Servicing instructionsCondensing ga
Page 6:
1Safety and general instructions1.8
Page 9 and 10:
Operation 44 Operation4.1 Operating
Page 11 and 12:
Operation 44.2.2 "Service Mode" men
Page 13 and 14:
Operation 4"ADJUSTMENTS" MENU72Curr
Page 15 and 16:
Function 55.2 Structure diagram "Fu
Page 17 and 18:
Function 5page 163The "Hot water mo
Page 19 and 20:
Function 5page 16, page 186The "Hea
Page 21 and 22:
Symptoms 6The following display val
Page 23 and 24:
Symptoms 6zMaine [1/c/\| e [2/1/0|
Page 25 and 26: Symptoms 6zMaine [a/0/1| e [8/0/0|
Page 27 and 28: Diagnosis 77 Diagnosis7.1 Faults wi
Page 29 and 30: Diagnosis 7page 2819Check that ther
Page 31 and 32: Diagnosis 7No display, part 3page 3
Page 33 and 34: Diagnosis 7Hot water mode not opera
Page 35 and 36: Diagnosis 7Repl. AApage 3312Check t
Page 37 and 38: Diagnosis 7page 3645Check the tank-
Page 39 and 40: Diagnosis 7page 3415Check the prima
Page 41 and 42: Diagnosis 7hot water but no central
Page 43 and 44: Diagnosis 7page 3648Check the DHW c
Page 45 and 46: Diagnosis 7No digital pressure disp
Page 47 and 48: iiliDiagnosis 7Lo0 Y 276The supply
Page 49 and 50: Diagnosis 7Blocking boiler-fault co
Page 51 and 52: Diagnosis 7Locking boiler fault cod
Page 53 and 54: Diagnosis 7Operating code 2U2U 21 3
Page 55 and 56: Diagnosis 7Blocking boiler fault co
Page 69 and 70: Diagnosis 76A Branch 05 v1 v8page 6
Page 71 and 72: Diagnosis 76A Branch 07page 6735Che
Page 73 and 74: Diagnosis 7Blocking boiler-fault co
Page 75: Diagnosis 7Blocking boiler-fault co
Page 79 and 80: Diagnosis 7Operating code 8Y7 L 2 6
Page 83 and 84: Diagnosis 7Replace the UBA44Check t
Page 85 and 86: Actions 88.1.2 External connection
Page 87 and 88: Actions 88.1.4 Checking the fan uni
Page 89 and 90: Actions 8• Remove the air suction
Page 91 and 92: Actions 88.1.8 Replacing the supply
Page 93 and 94: Actions 8• Set the main switch on
Page 95 and 96: Actions 8• Switch on the power su
Page 97 and 98: Actions 88.1.17 Checking the ioniza
Page 99 and 100: Actions 88.1.20 Checking the gas co
Page 101 and 102: Actions 8fig. 40 Testing the resist
Page 103 and 104: Actions 8• Loosen three screws on
Page 105 and 106: Actions 8• If the boiler does not
Page 107 and 108: Actions 88.1.25 Measuring the inlet
Page 109 and 110: Actions 88.1.27 Measuring the carbo
Page 111 and 112: Actions 8• Pull both plugs on the
Page 113 and 114: Actions 88.1.30 Burner; replacing
Page 115 and 116: Actions 8• Install the new burner
Page 117 and 118: Actions 88.1.34 Heat exchanger; rep
Page 119 and 120: Actions 8• Disconnect the plug an
Page 121 and 122: Actions 8• Remove both the hot su
Page 123 and 124: Actions 8• Loosen the fastening s
Page 125 and 126: Actions 88.1.35 UBA 3; replacing•
Page 127 and 128:
Appendix 9Gas orifice diameter Alti
Page 129 and 130:
Spare parts 10Pos. Description Prod
Page 131 and 132:
Spare parts 10Exploded view Logamax
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