Buderus Logamax GB062-24 KDE H V2 Service Manual Download Page 54

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Components

Logamax Plus GB062

Components

8.1

Mixing unit

Fig. 33

Mixer unit differences

The mixing unit from 14 kW is red / black.

8.2

Resonator & Burner

Fig. 34 Resonator and Burner differences

Resanotor is only available in 24 kW high modulation
(HM) appliances .

Summary of Contents for Logamax GB062-24 KDE H V2

Page 1: ...Only for authorized service technician Service Manual Gas Wallhung Boiler Logamax Plus GB062 GB062 14 GB062 24 2017 01_PRM M21_U Demir...

Page 2: ...r 7 747 026 229 41 5 2 Gas conversion steps 42 5 3 Condens 2500W CerapurCompact 43 5 3 1 GB062 24K 43 5 3 2 Electrical values 44 6 Inspection and maintanance 46 6 1 Safety instructions for inspection...

Page 3: ...otent 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 proo...

Page 4: ...valve B Open the cold water valve and one hot water tap until water flows out B Open the heating flow valve and heating return valve B Fill the heating system to 1 2 bar and close the fill valve B Bl...

Page 5: ...bol and the burner symbol appear 2 6 Setting summer mode The heating circuit pump and consequently central heating are switched off The DHW and power supply for the heating control unit and timer are...

Page 6: ...Product Type Description GB Wall mounted condensiing gas boiler 062 Segmen 24 Nominal CH output in kW 14 20 24 kW K Combi version D Booster for DHW e g 28 kW H Gas type H Natural Gas L LPG V2 Version...

Page 7: ...ing up a menu Menu 1 page 8 Menu 2 page 12 Menu 3 page 14 B Press or to scroll through the menu s service functions Making a setting B Press OK to switch to the service function The value flashes on t...

Page 8: ...the setting 1 b Maximum output DHW The output can be limited to the specific heat demand between the mini mum rated output and maximum rated output Default setting is the maximum rated output for DHW...

Page 9: ...0 1 Default setting 0 minutes 3 A Automatic ant cycle mode 0 0ff 1 on installation with weather depanded controls Default setting 0 3 b Time interval for starting and stopping anti cycle the burner in...

Page 10: ...errun time Time intervall for the maintanence month 0 Off 1 72 Time Month 5 F Inspection intervall If you see this symbol you can reset to 0 after inspection 6 A Calling up the last fault saved The fu...

Page 11: ...On Default setting 00 P 0 Activiation of integrated WDC Weather Depended Controls function and set point of sum mer switch set temperatur 0 WDC function is Off 1 30 Temperaturlimit for summer and WDC...

Page 12: ...ts an operating mode The following settings are possible 0 Standard operation the appliance runs according to controller specifi cations 1 The appliance runs at minimum output 2 The appliance runs at...

Page 13: ...uppressed until the DHW temperature sensor detects that the water preheated by solar energy has reached the required outlet tem perature Set the heating delay in accordance with system conditions The...

Page 14: ...F 1 Gas Type With this service functlon is changed the gas type B To change the actual gas type press and button together until the scroll up down symbol is shon in display 0 Naturalgas 1 Liquidgas LP...

Page 15: ...7 5L 323 RUN BUS Communication fault 19 CP 326 RUN WBC D appliances system boiler Cylinder tank temperature sensor 20 3Y 334 WAIT The differential pressure switch is open before ignition during self c...

Page 16: ...noise too loud rumbling noises 42 Water circulation noises 44 Heat up lasts too long 45 Flue gas readings incorrect CO content too high 47 Ignition too strong or poor 47 Condensate in air box 47 DHW o...

Page 17: ...e function E 1 Is the code correct yes B Switch on the boiler CL on display 3 no B Correct the right boiler type co5Lde CL on display 3 3 Check the cables for damages B Switch off the boiler B In case...

Page 18: ...check the error again If there is no error check the control thermostat Change if necessary change it B Switch on the boiler 2 2 B Check the connections between the control thermostat and the boiler...

Page 19: ...display 2 2 B Switch off the boiler B Cut the main voltage supply B Check the soft code and boiler type via Service function E 1 and 4 E Is it correct yes B Switch on the boiler CP on display 3 no B C...

Page 20: ...er 2 2 Check the silicon hose Is there any blockage or stuck on silikon hose yes B Switch off the boiler B Change the silicon hose or correct the stuck B Switch on the boiler 3Y 3 no 3 3 Check the low...

Page 21: ...age supply B Check the fan connection cable Is there open circuit yes B Chang the fan cable B Switch on the main voltage supply B Switch on the boiler 3C 3 no 3 3 Is fan defect yes B Switch off the bo...

Page 22: ...ked yes B Switch off the boiler B Change the manometer B Fill the system with 8Ywater 1 bar B Switch on the boiler 2E 3 no 3 3 Check the expansion vessel precharge pressure Is it correct yes 4 no B Sw...

Page 23: ...s defect B Switch off the boiler B Cut the main voltage supply B Change the electronic board PCB B Switch on the main voltage supply B Switch on the boiler B END 2E Heating system charge pressure is t...

Page 24: ...ck the external temperature lim iter measure the circuit Is the circuit open yes B Check the connection at limiter and fasten the screws very well B Switch on the main voltage supply B Switch on the b...

Page 25: ...4Yistan2E 2 m from boiler to external temperature limiter B Reset the external temperature limiter B Switch on the boiler 8Y 6 no 6 6 B Switch off the boiler Is the bridge in connection terminal insta...

Page 26: ...NTC cables for damages B Switch off the boiler B In case of CH NTC is changed Remove the NTC socket Measure the NTC resistance Connect the socket again B Remove the big socket 20 Pole on PCB B Measure...

Page 27: ...ult B Switch off the boiler and cut the main supply B Drain of he water in boiler B Check the fuses if OK change the circulation pump B Refill the system again and bleed the air B Switch on the main s...

Page 28: ...anger WB6 for damages corrosions or rippen effect B Measure the actuating pressure for the maintenance necessity Steuer druck if the pressure not OK Clean the WB6 see capital in IM for the maintenace...

Page 29: ...ct the flue gas installation remove the blockage B Switch on the boiler 10 10 Electronic board PCB is defect B Switch off the boiler B Cut the main voltage supply B Change the electronic board PCB B S...

Page 30: ...Switch on the boiler again 3 no B Open the gas valve B Press the RESET button and start the boiler again 6A 3 3 Is gas valve open yes 4 no B Open the gas valve B Press the RESET button and start the b...

Page 31: ...B Is the gas inlet pressure correct if it is high check the gas regulator B Press the RESET button and start the boiler again 6A 7 7 Is the siphon blocked yes B Clean or correct the siphon 8 no 8 8 Is...

Page 32: ...l unit yes 11 no B Switch off the boiler B Connect the ignition cable correctly to the ignition unit B Switch on the boiler B Press the RESET button and start the boiler again 6A 11 12 Ionization cabl...

Page 33: ...t max opera tion mode chimniy sweeper via serv ice function 2 F3 B Measure the CO2 O2 value see instruction manual Are the values correct yes 6A 16 no B In case of deviation correct the gas adjustment...

Page 34: ...rating mode via service function 2 F3 B Measure the actuating pressure for the maintenance necessity Steuer druck see capital in IM for the main tenace pressure Is the actuating pressure Steuer druck...

Page 35: ...nection or if possible fix it B Switch on the boiler EC 3 no 3 3 Check the O2 CO values at min and max Are the values correct yes 4 no B Correct he adjustment EC 4 4 B Switch off the boiler B Cut the...

Page 36: ...Switch off the boiler B Remove the electronic board PCB B Check the electronic board PCB Is there any moisture or water drops on PCB yes B Dry the PCB or if necessary replace it B Install the PCB aga...

Page 37: ...main voltage supply B Press the RESET button and start the boiler again B Switch on the boiler 6C 2 2 Cable harness is defect B Switch off the boiler B Change the cable harness B Switch on the boiler...

Page 38: ...B is defect B Switch off the boiler B Cut the main voltage supply B Change the electronic board PCB B Switch on the main voltage supply B Switch on the boiler Gradient Monitoring Rapid overshooting of...

Page 39: ...ftcode nummer list is given in spare part package or see capitel 3 no 2 yes B Set appliance type service function 3 E1 P 2 2 Electronic board PCB is defect B Switch off the boiler B Cut the main volta...

Page 40: ...ed B Check the gas valve and replace it if required Ignition too strong or poor B Check gas type B Check gas supply pressure B Check the power supply B Check the electrodes and cable replace if requir...

Page 41: ...10 18410 20 12171 25 10000 30 8269 35 6881 40 5759 45 4847 50 4101 55 3488 60 2981 65 2559 70 2207 75 1912 80 1662 85 1451 90 1272 Tab 10 Domestic hot water temperature Sensor Temperature C Measure T...

Page 42: ...5 Electrical values gas conversion and boiler layout Logamax Plus GB062 42 5 2 Gas conversion steps Fig 5 Gas conversion steps...

Page 43: ...r 6 Fan 7 Turbine 8 3 way valve 9 Central heating pump 10 DHW temperature sensor DHW_NTC GB062 K 11 Connection for external limiter e g TB1 12 Flue gas temperature limiter AG 13 CH pressure switch 0 5...

Page 44: ...ice function t03 16 Domestic hot water temperature sen sor DHW NTC 20 C 12 17 kOhm 60 C 2 98 kOhm A B 0 5 kOhm or measure on the sensors NTC self 20 Air Pressure Switch APS Workingspressure 3 88 3 53...

Page 45: ...is work or not The connection should be as shown on the picture Functiontest with service function t02 7 Flowrate sensor Turbine Cable colour black white grey 1 5 l min 5 Hz 10 l min 33 Hz 15 l min 5...

Page 46: ...n electrical components isolate them from the power supply 230 V AC fuse circuit breaker and secure against unintentional reconnection Escaping flue gas can cause poisoning B Check for leaks after wor...

Page 47: ...removal tool to clean the heat exchanger 1 Remove the suction line 2 Press the locking device onto the mixer unit rotate it down ward and remove the mixer unit by pulling it forward Fig 8 Remove suct...

Page 48: ...B Clean both displacement bodies B Clean the heat exchanger with the brush rotate in both directions from top to bottom to each catch B Remove the screws from the cover of the inspection aper ture and...

Page 49: ...ck diaphragm flue gas non return device in the mixer unit B Remove mixer unit B Check diaphragm for dirt and cracks Fig 17 Diaphragm in mixer unit Material damage due to hot flue gas Hot flue gas can...

Page 50: ...1 4401 or B Remove plate heat exchanger and replace 1 Remove the screw 2 Remove the plate heat exchanger Fig 20 Removing the plate heat exchanger 6 8 Checking the expansion vessel The expansion vessel...

Page 51: ...s valve 1 Solenoid valve 1 test points 3 4 2 Solenoid valve 2 test points 1 3 B Replace gas valve if the resistance is 0 or 6 12 Removing the gas valve B Close the gas valve 1 Remove the clip 2 Open t...

Page 52: ...ove the plug 6 15 Remove the heat exchanger B Remove suction line and mixer unit B Remove the fan 1 Remove the clip 2 Remove the flow pipe 3 Remove the cable from the flue gas temperature limiter 4 Re...

Page 53: ...is function is enabled When DHW Domestic hot Water requested this mode interrupt but goes on after DHW request Pump is switching on and off every 20 seconds Fig 31 Air purging 7 4 Air Pressure Switch...

Page 54: ...54 8 Components 8 1 Mixing unit Fig 33 Mixer unit differences The mixing unit from 14 kW is red black 8 2 Resonator Burner Fig 34 Resonator and Burner differences Resanotor is only available in 24 kW...

Page 55: ...8 Components Logamax PLus GB062 55 8 3 Venturi Fig 35 Differences between normal and high modulation HM venturis...

Page 56: ...8 Components Logamax Plus GB062 56 8 4 Circulation Pump ErP pump Fig 36 Pump_LEDs Fig 37 Adjustment possibility between constant speed or variable spees modulation Fig 38 Pump_LED diagnose and remedy...

Page 57: ......

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