Buderus Logamax plus Service Manual Download Page 27 | Manualshive

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3

Failures / Errors

GB012 - 25K

27

3.6

Electrical Circuit Diagram

Fig. 2

6 720 643 530-07.2O

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9

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2

6

17

15

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16

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11

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8

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Summary of Contents for Logamax plus

Page 1: ...Only for authorized service technician Service Manual Gas Wallhung Boiler Logamax plus 6 720 641 705 00 1O GB012 25K 2011 10 EN U Demir...

Page 2: ...3 Failures Errors 7 3 1 Elimination of errrors 7 3 2 Failure Error Codes Overview 8 3 3 Failure codes and corrections steps 9 3 4 Sensor NTC Values 25 3 4 1 Flow Temperature Sensor 25 3 4 2 Domestic H...

Page 3: ...nt perEND B Flue systens must not be modified in any way B If the appliance has a type B flue system Ventilation openings in doors windows and walls must not be sealed or restricted If draught proof w...

Page 4: ...tand by On off Button 2 Up Button 3 Down Button 4 Temparature Display C 5 Mode Button Symbol Description Save a parameter in service mode Air bleeding function is active service function 1 2 C MAP fan...

Page 5: ...shown on Display Exit from Service Level B For the exit from service level press the mode and button for 5 second or Stand by button The flow temperature will be shown again on display 1 Level Servic...

Page 6: ...de and button for 5 second or Stand by button The flow temperature will be shown again on display 2 Level Service Code Description Range Initial Factory Setting 2 1 A CH max heat output 30 100 100 2 1...

Page 7: ...y The appliance will start up again and the flow temperature will be displayed If a failure can not be eliminated B Contact your approved installer or Customer Service for assistance providing details...

Page 8: ...supply 4C Overheat lock out by temperatur limiters STBs Flue gas prim Heatexchanger In this case Heat demands is blocked and pump stops 3 min later Check the system presseure temperature sensor pump a...

Page 9: ...ge the pump B Fill with water and bleed the system again B Connect to main supply B Switch on the appliance B Press RESET button and restart again 4C failure still exist 3 no 3 3 Check the flue gas pi...

Page 10: ...Connect to main supply B Switch on the appliance B END 1 If the air inside not removed discharged can be also used the manuel air vent valve in recuparator 4Cis flashing Overheat lock out by temperat...

Page 11: ...y gas pressure regulator at the house entrance yes B Check if the montage of the gas pressure regu lator assembly is correct or not If necessory correct it B M6Asure the gas inlet pressure If there is...

Page 12: ...ble and electrode is correct or not yes 10 no B Connect the cable B Press RESET button and restart again 6A failure still exist 10 10 Is the ignition cable assembled cor rectly yes 11 no B Switch off...

Page 13: ...in supply B Switch on the appliance B Press RESET button and restart again 6A failure still exist 14 14 Electronic card is defect B Switch off the appliance B Cut mains supply B Change the electronic...

Page 14: ...liance 4Y failure still exist 2 2 Check if the cables are damaged or not B Switch off the appliance B If NTC changed disassemble the NTC cable from NTC measure the sensor resistance assemble the NTC t...

Page 15: ...t B Switch off the appliance B In case of NTC is cahnged Pull the NTC cables out Measure NTC resistance Reconnect the NTC cable B Pull out the 20 poled connector on control unit B Measure the NTC resi...

Page 16: ...age 1H failure still exist 8 no 8 8 Electronic card is defect B Switch off the appliance B Cut mains supply B Change the electronic card B Connect to main supply B Switch on the appliance 1 The sensor...

Page 17: ...Check if cable damaged or not B In case of NTC is cahnged Pull the NTC cables out Measure NTC resistance Reconnect the NTC cable B Switch off the appliance B Pull out the 20 poled connector on control...

Page 18: ...pressure 0 5 bar yes 2 no B Fill the system with water 2P failure still exist 2 2 B Is there air in the system yes 3 no B Remove the air in system 2P failure still exist 3 3 B Check if water is circu...

Page 19: ...B Change the cables B Switch on the appliance 3A failure still exist 2 no 2 2 Is there any problem at fan sensor and cable B Switch off the appliance B Check the sensor and cable yes B Change the cabl...

Page 20: ...oltage supply Is voltage below 160 V AC yes B Switch off the appliance B Inform related persons company B Switch on the appliance 3C failure still exist 3 no 3 3 Check the fan it self Is there any blo...

Page 21: ...ction 1 Gas valve is defect B Switch off the appliance B Change the gas valve B Switch on the appliance B Check the leakage B Press RESET button and restart again 6C failure still exist 2 2 Electronic...

Page 22: ...cuperaotr or switch contacts are wet B It can be blockage at recuperator drain Correct it B Is the siphon connection adapter in right posi tion It should be in vertical position B Leakage in water lev...

Page 23: ...ut the 20 poled connector on control unit B Measure the resistance Is deviation of resistance values yes B Change the cable harness B Switch on the appliance d7 failure still exist 3 no 3 3 Check the...

Page 24: ...esn t run The I I symbol will be shown on display alternately Control Step Action 1 MAP value is according the flue gas pipe length not selected yes B Adjust the MAP value via service fonction 2 b d f...

Page 25: ...9 786 35 8 047 40 6 653 45 5 523 50 4 608 55 3 856 60 3 243 65 2 744 70 2 332 75 1 990 80 1 704 85 1 464 90 1 262 95 1 093 100 950 Tab 5 DHW Temperature Sen sor C Resistance Ohm 0 33 242 10 19 947 20...

Page 26: ...C 2 9 kOhm 0 5 kOhm Pump 230 VAC I 495 Ohm II 355 Ohm III 220 Ohm 10 Ohm Ionisation Electrode ca 3 5 A Gas Safety Valve 1 230 VAC 1 55 kOhm 10 Ohm Gas Safety Valve 2 230 VAC 8 kOhm 20 Ohm common neut...

Page 27: ...3 Failures Errors GB012 25K 27 3 6 Electrical Circuit Diagram Fig 2 6 720 643 530 07 2O 12 1 5 10 9 14 5 2 6 17 15 4 16 2 3 7 11 13 3 8 18...

Page 28: ...ctrode 5 Pump 6 Turbine 7 LCD Dispaly connection 8 Transformer 9 Controller room thermostat connection 10 Diagnostic connection 11 Igniton transformer 12 Supply cable 13 DHW temperature sensor NTC 14...

Page 29: ...3 Failures Errors GB012 25K 29 3 7 Structure Fig 3 mode reset 20 6 720 643 530 06 1O 18 17 16 15 22 25 26 23 29 30 32 31 2 3 5 7 1 8 9 10 11 12 13 21 19 4 28 14 6 24 27...

Page 30: ...om air vent valve 10 Circulation pump 11 Pump speed switch 12 Condensate siphon 13 Turbine 14 Condensate water hose 15 Manometer 16 Button 17 Mode Button 18 Button 19 Display 20 Stand by On off Button...

Page 31: ...sh air 14 Combustion chamber 15 Fan 16 Condensate Heatexchanger Recuperator 17 Flue gas pipe 18 Expansion vessel 19 Autom air vent valve 20 Circulation pump 21 CH safety valve 22 Siphon 23 Turbine 24...

Page 32: ...14 1 24 3 Net calorific value 15 C Hs kWh m 10 5 34 9 Display G kW 30 7 8 1 3 2 3 13 8 0 6 50 9 9 2 1 3 7 17 5 0 8 53 10 5 2 4 4 2 18 6 0 8 56 11 4 2 8 4 9 20 2 0 9 60 13 1 3 6 6 4 23 2 1 0 63 14 6 4...

Page 33: ...4 GB012 25K 33 Notes...

Page 34: ...4 GB012 25K 34...

Page 35: ......

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