Related Manuals for Buderus Logamax GB062-24 KDE H V2
Summary of Contents for Buderus Logamax GB062-24 KDE H V2
- Page 1 Service Manual Gas Wallhung Boiler Logamax Plus GB062 Only for authorized service technician ! GB062 - 14..GB062 - 24..
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Page 2: Table Of Contents
Content Content Checking the expansion vessel ..50 Safety precautions and symbols ....3 Setting the heating system operating pressure Symbols . -
Page 3: Safety Precautions And Symbols
Safety precautions and symbols Safety precautions and symbols Symbols Inspection / Maintenance Safety instructions in this document are identi- B We recommend take out a to have the system regulary fied by a warning-triangle symbol and are print- serviced in order to ensure that it functions reliably and ed on a grey background. -
Page 4: Operation
Operation Operation Before commissioning NOTICE: Commissioning without water will destroy the appliance. B Only operate the appliance once it has been filled with water. B Adjust pre-charge pressure of expansion vessel to static head of the heating system. B Open the automatic air vent valve (leave open). B Open all system radiator valves. -
Page 5: Setting The Maximum Flow Temperature
Operation The appliance has an anti-seizing function NOTICE: Heating system at risk through frost. In which prevents the heating circuit pump and the summer mode, only the appliance is protected 3-way valve seizing up following long periods of against frost. inactivity. -
Page 6: Short Operating Overview
Operation Short operating overview Fig. 4 Short operating overview Product Type Description - 24 Tab. 2 Product type description Wall mounted condensiing gas boiler Segmen Nominal CH output in kW (14, 20, 24, ...kW) Combi version Booster for DHW (e.g. 28 kW) Gas type (H = Natural Gas, L = LPG) Version2 : Energie Saving Pump “IT”... -
Page 7: Service Menu Settings
Service menu settings Service menu settings Operating the service menu The service menu enables the convenient adjustment and checking of many appliance functions. The service menu splits into three submenus: • Menu 1, for setting level one service functions ( page 9) •... -
Page 8: Service Functions Overview
Service menu settings B Hold down “Back”, + and – at the same time until L.1 is Service functions overview shown on the display. B Press OK to make settings in menu 1. 3.2.1 Menu 1 To call up a service function in this menu: B Press + or –... - Page 9 Service menu settings Service function Possible settings/display Thermal disinfection of the DHW • 0: Switched off cylinder (System boiler) • 1: Switched on This service function activates the heating of the DHW cylinder to 75 °C. B Implement thermal disinfection as described. Thermal disinfection will not be displayed.
- Page 10 Service menu settings Service function Possible settings/display max pre heat temperature for max DHW pre heat temperature for comfort function. comfort function (combi) The following settings are possible: • 40 … 65 ºC Default setting : 62 º Boiler type It will be detected automaticly of DHW or tank NTC and shown in display.
- Page 11 Service menu settings Service function Possible settings/display Building dry function The building drying function of boiler doesn’t corresponds to the dry func- tion of the weather depended controls. In case of activation of this function, DHW and chmniy sweep function is no tpossible.
- Page 12 Service menu settings B Press – until L.2 is shown on the display. 3.2.2 Menu 2 B Press OK to make settings in menu 2. To call up a service function in this menu: B Hold down “Back”, + and – at the same time until L.1 is B Press + or –...
- Page 13 Service menu settings Service function Possible settings/comments/displays DHW temperature (Combi version) This service function allows you to display the DHW temperature. Temperature at cylinder tempera- This service function allows you to display the temperature in the DHW cyl- ture sensor (system version) inder.
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Page 14: Menu 3
Service menu settings B Press – until L.3 is shown on the display. 3.2.3 Menu 3 B Press OK to make settings in menu 3. To call up a service function in this menu: B Hold down “Back”, + and – at the same time until L.1 is B Press + or –... -
Page 15: Fault Finding
Fault finding Fault finding Explanations of faults table Each title of the table shows the error code in the display and Fault group definition at the same time the cause of the error in general. To repair Shown failures are divided in diffrent category : any possible fault in the device, follow the troubleshooting •... - Page 16 Fault finding Faults that are not shown on the display Fault description Page Combustion noise too loud; rumbling noises Water circulation noises Heat-up lasts too long. Flue gas readings incorrect; CO content too high. Ignition too strong, or poor. Condensate in air box. DHW outlet temperature not reached.
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Page 17: Faults And Possible Remedy Steps
Fault finding Faults and possible remedy steps Hot water temperature sensor (DHW-NTC) is faulty. Step Remedy Check the hot water temperature sensor for yes: --> 2. breaks or short CLcircuits. B Change the Sensor. B Switch off the boiler. B Switch on the boiler. B Remove the Socket of NTC. - Page 18 Fault finding BUS-Communication fault Step Remedy B Switch off the boiler.CP yes: B Clean the connection terminals. B Cut the main voltage supply. B Connect the cable again. B Check the connection terminals at B Switch on the boiler. controls and boiler. 5L on display ? -->...
- Page 19 Fault finding System boiler: Cylinder / tank temperature sensor. Step Remedy Check the tank temperature sensor for yes: --> 2. breaks or short circuits. B Change the Sensor (NTC). B Switch off the boiler. B Switch on the boiler. B Remove the NTC of terminal. CP on display ? B Measure the electrical resistance of Tank- -->2.
- Page 20 Fault finding The differential pressure switch is open before ignition (during self check) (only high modulation version). Steps Remedy Check the contacts of diff. pressure yes: B Change the diff. pressure switch. switch. B Switch on the boiler. B Switch off the boiler. 3Y ? -->2.
- Page 21 Fault finding Fan doesn't reach to start fan speed. Step Remedy Are the both fan cable (power and PMW yes: --> 2. signal) correct connected ? B Switch off the boiler. B Connect the cables again. B Switch on the boiler. 3C ? -->2.
- Page 22 Fault finding Heating system charge pressure is too low (<0.5 bar). Water pressure switch is triggered. Step Remedy Check the system pressure. yes: B Switch off the boiler. Is the pressure <0,5 bar ? B Check the boiler and installation for the water leakage.
- Page 23 Fault finding Heating system charge pressure is too low (<0.5 bar). Water pressure switch is triggered. Step Remedy B Switch off the boiler. Electronic board (PCB) is defect. B Cut the main voltage supply. B Change the electronic board (PCB). B Switch on the main voltage supply.
- Page 24 Fault finding External switching contact triggered. Step Remedy B Switch off the boiler. yes: --> 2. B Install the bridge in Is the bridge in connection terminal installed ? B Switch on the boiler. 8Y ? --> 2. B Switch off the boiler. yes: -->...
- Page 25 Fault finding External switching contact triggered. Step Remedy B Switch off the boiler. Is external temperature limiter (e.g. yes: TB1) triggered ? B Check the reason for the external temperature limiter triggering and correct it. Info : Max flow temperature can be adjusted in servi2E function 1.2b.
- Page 26 Fault finding Flow temperature sensor (CH-NTC) faulty. Step Remedy Check the flow temperature sensor for yes: --> 2. damages. B Change the Sensor. B Switch off the boiler.4C B Switch on the boiler. B Remove the Socket of NTC. 4Y on display ? B Measure the electrical resistance of -->2.
- Page 27 Fault finding - Heat exchanger temperature limiter or flue gas temperature limiter has tripped. - The differential pressure switch does open when the fan runs (after ignition) (only high modulation version). Step Step Is the system water pressure in green yes: -->2.
- Page 28 Fault finding - Heat exchanger temperature limiter or flue gas temperature limiter has tripped. - The differential pressure switch does open when the fan runs (after ignition) (only high modulation version). Step Step Are the heatexchanger temperature yes: B Switch off the boiler.. limiter (STB) cables disconnected or B Connect the cables again.
- Page 29 Fault finding - Heat exchanger temperature limiter or flue gas temperature limiter has tripped. - The differential pressure switch does open when the fan runs (after ignition) (only high modulation version). Step Step B Switch off the boiler. 4C ? --> 10. B Correct the flue gas installation (remove the blockage).
- Page 30 Fault finding Flame not detected. Step Remedy B Switch on the boiler. yes: --> 2. Is flame visible ? --> 2. B Switch off the boiler. Check / measure the ionisaiton cur- yes: rent. B Cut the m6Aain supply. Is it correct ? B Earth connection : Check the earth circuit connection.
- Page 31 Fault finding Flame not detected. Step Remedy B Check the gas regulator correct installation. If Natural gas : yes: Is there a gas pressure regulator necessary, correct it. installed ? B Check the gas inlet pressure. If there is a deviation. Inform the gas company.
- Page 32 Fault finding Flame not detected. Step Remedy B Enter into the 2. service level. B Press the “Return” button twice to exit the service yes: mode. B Call the service function 8.F -->10. Is the permanent ignition (without gas) correct ? B Press the service button twice to exit the service mode.
- Page 33 Fault finding Flame not detected. Step Remedy B Switch off the boiler. B Install the diaphragm correctly in mix-unit again. yes: B Remove the mix unit. B Install the mix-unit. Check the diaphragm for the damage, B Press the RESET button and start the boiler again. dirt or adhesion.
- Page 34 Fault finding Flame not detected. Step Remedy B Check the flue gas system for lengths, elbows Fresh air flow rate is too low ? yes: quantity, extension pipe and other accessories. If needed, correct/change it. B Check the air vents in case of B type installation (fresh air from room).
- Page 35 Fault finding Internal fault (Internal fault in the program sequence or failure of the mains voltage). Step Remedy Is blinking error code in display ? yes: B Reset the boiler and restart the boiler again. EC ? --> 2. --> 2. B Switch off the boiler.
- Page 36 Fault finding Flame detected even when the burner is switched off. Step Remedy B Switch off the boiler. yes: B Replace the ionisazation electrode. B Remove the electrode set . B Install the electrode set again. B Check the ionization electorode. B Switch on the boiler.
- Page 37 Fault finding After switching gas off : Flame is detected. Step Remedy B Close the gas inlet valve. B Switch off the boiler. B Replace the gas valve. B Check the O2 values. If neceassary, correct it. B Open the gas valve again. Check it for leaks. B Switch on the main voltage supply.
- Page 38 Fault finding The “OK” button was actually pressed for at least 5 seconds (= reset) or short circuit form low voltage cable to the frame. Step Remedy Is blinking error code on display? --> 3. B Press the RESET button and start the boiler again. yes: EP ? -->...
- Page 39 Fault finding Appliance not defined. Step Remedy Softcode for boiler type not defined. -->2. Softcode nummer list is given in spare B Set appliance type (service function 3.E1) yes: part package or see capitel P ? -->2. B Switch off the boiler. Electronic board (PCB) is defect.
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Page 40: Faults That Are Not Shown On The Display
Fault finding Faults that are not shown on the display Faults Remedy Combustion noise too loud; rumbling noises. B Check gas type. B Check gas supply pressure. B Check flue system, clean or repair if required. B Check gas/air ratio; correct if required. B Check the gas valve and replace it if required. -
Page 41: Electrical Values, Gas Conversion And Boiler Layout
Resistance ( Ω) 72228 28704 54889 18410 32506 12171 19860 10000 12486 8269 8060 6881 5.1.4 Buderus Outdoor Temperature Sensor 5759 4847 4101 3488 2981 2559 2207 1912 1662 1451 1272 Tab. 10 Domestic hot water temperature Sensor 5.1.2 Central Heating Flow Temperature Sensor, Storage Tank Temperature Sensor Temperature ( °C) -
Page 42: Gas Conversion Steps
Electrical values, gas conversion and boiler layout Gas conversion steps Fig. 5 Gas conversion steps Logamax Plus GB062... -
Page 43: Condens 2500W / Cerapurcompact
Electrical values, gas conversion and boiler layout Condens 2500W / CerapurCompact 5.3.1 GB062-24K..Bild 6 El. Wiring diagram_GB062-24K.. Gas valve CH pressure switch (0,5 bar) CH flow temperature sensor (CH_NTC) 2 Phase Power modul (only Belgium) Ignition electrode 230 V- Power cable Ignition transformer Flame (Ionisation) electrode Fuse... -
Page 44: Electrical Values
Electrical values, gas conversion and boiler layout Electrical values 5.3.2 Electrical values for Logamax GB062... Service Func- Toler- Pos. Description Measurement Point Expected value tion ance Remark 3 Way valve motor 70 Ohm ± 5 measure on the Pin : 2 -3 motor socket Pump (3 Step ) I : 475 Ohm... - Page 45 Electrical values, gas conversion and boiler layout Service Func- Toler- Pos. Description Measurement Point Expected value tion ance Remark Fan (modulating) Electrical measurement on fan is not possible. It can be only tested whether it is work or not. The connection should be as shown on the picture.
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Page 46: Inspection And Maintanance
Inspection and maintanance Inspection and maintanance Safety instructions for inspection and Risk of scalding from hot water ! maintenance Notes for the target group Hot water can lead to severe scalding. B Warn residents of risk of scalding. Only approved contractors may carry out inspection and B Perform thermal disinfection outside of the normal operat- maintenance. -
Page 47: Check The Heat Exchanger
Inspection and maintanance Check the heat exchanger 2. Press the locking device onto the mixer unit, rotate it down- ward, and remove the mixer unit by pulling it forward. B Remove the casing. B Remove the cap from the test nipple, and connect a pres- sure gauge. - Page 48 Inspection and maintanance 6 720 611 626-82.1R Fig. 10 Remove the burner 6 720 613 630-01.3ITL B Remove the top displacement body using the lifting device. Fig. 12 Removing the bottom displacement body. B Clean both displacement bodies. B Clean the heat exchanger with the brush : –...
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Page 49: Cleaning Condensate Trap
Inspection and maintanance Cleaning condensate trap Risk to life through poisoning ! If the condensate trap is not filled, poisonous flue gas can escape. B Before commissioning, make sure that the si- phon is filled with water. B If available: Only turn off the trap filling pro- gram during maintenance, and turn it back on the end of maintanance. -
Page 50: Checking The Strainer In The Cold Water Pipe
Inspection and maintanance Checking the strainer in the cold water pipe GB062..K.. (Combi) appliances: Check the plate heat exchanger B Remove the clip. B Pull out the pressure relief valve. If the DHW output is insufficient : B Check the strainer in the cold water pipe for contamination. B Descale the plate heat exchanger with scale removal agent approved for stainless steel (1.4401). -
Page 51: Removing Automatic Air Vent Valve
Inspection and maintanance B Top up the water until the indicator is between 1 bar and 2 6.12 Removing the gas valve bar again. B Close the gas valve. If pressure is not being maintained : 1. Remove the clip. B TCheck expansion vessel and heating system for leaks. -
Page 52: Remove The Heating Pump
Inspection and maintanance 6.13 Remove the heating pump 4. Remove the nut 1. Unplug the plug. 2. Remove screws. 3. Pull out the pump head towards the front. 0 010 006 639-002 Fig. 25 6.14 Removing the motor of the 3-way valve 1. -
Page 53: Good To Know
Good to know Good to know Integrated Weather Dependet but goes on after DHW request. Pump is switching on and off every 20 seconds. Function (WDC) - Heat curve Weather dependet function (WDC) can activated via service funtion 1.P.0. Following parameter A, B and S can be adjustet. Fig. -
Page 54: Components
Components Components Mixing unit Fig. 33 Mixer unit differences The mixing unit from 14 kW is red / black. Resonator & Burner Fig. 34 Resonator and Burner differences Resanotor is only available in 24 kW high modulation (HM) appliances . Logamax Plus GB062... -
Page 55: Venturi
Components Venturi Fig. 35 Differences between normal and high modulation (HM) venturis Logamax PLus GB062... -
Page 56: Circulation Pump (Erp Pump)
Components 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. Logamax Plus GB062...