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Buderus Logamax GB062-24 KDH V2 User Manual

Buderus Logamax GB062-24 KDH V2
57 pages
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Only for authorized service
technician !
Service Manual
Gas Wallhung Boiler
Logamax Plus GB062
GB062 - 14....
GB062 - 24....
2017/01_PRM-M21_U. Demir

Table of Contents

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Buderus Logamax GB062-24 KDH V2 Specifications

General IconGeneral
ModelLogamax GB062-24 KDH V2
Fuel TypeNatural Gas / LPG
ErP efficiency class heatingA
ErP efficiency class DHWA
Max. working pressure3 bar
Flue gas connection60/100 mm
TypeWall-mounted boiler
Output24 kW
Connection for heating flowG 3/4
Connection for heating returnG 3/4
Connection for gasG 1/2
Connection for DHWG 1/2

Summary

1 Safety Precautions and Symbols

Symbols

Explains warning symbols, signal words, and note indicators used in the manual.

Safety Precautions

General safety guidelines for installation, operation, maintenance, and handling combustible materials.

3 Service Menu Settings

3.1 Operating the Service Menu

Guide on how to access, navigate, and operate the appliance's service menu.

3.2 Service Functions Overview

Overview of the structure and access methods for service functions.

3.2.1 Menu 1

1.A Maximum Output for Central Heating

Limits output for heating between min/max rated output.

1.b Maximum Output (DHW)

Limits DHW output between min/max rated output.

1.E Pump Mode

Configures pump operation when the burner is off.

2.b Maximum Flow Temperature

Sets the maximum flow temperature for heating.

2.C Venting Function

Activates venting function after maintenance.

3.2.1 Menu 1 (Continued)

3.2.2 Menu 2

3.2.2 Menu 2 (Continued)

3.2.3 Menu 3

E.1 Appliance Type, Output, DHW Heating (Soft Code)

Adjusts control unit to appliance type, output, and DHW heating.

F.1 Gas Type

Changes the actual gas type used by the appliance.

4 Fault Finding

4 Fault Finding (Continued)

Faults That Are Not Shown on the Display

Lists and describes faults without specific error codes.

CL - Hot Water Temperature Sensor (DHW-NTC) is Faulty

Troubleshooting steps for fault code CL (DHW sensor).

5L - BUS-Communication Fault

Troubleshooting steps for fault code 5L (BUS communication).

CP - System Boiler: Cylinder / Tank Temperature Sensor

Troubleshooting for fault code CP (cylinder/tank sensor).

3Y - The Differential Pressure Switch is Open Before Ignition

Troubleshooting for fault code 3Y (differential pressure switch).

3C - Fan Doesn't Reach to Start Fan Speed

Troubleshooting steps for fault code 3C (fan speed).

2E - Heating System Charge Pressure is Too Low

Troubleshooting for fault code 2E (low system pressure).

8Y - External Switching Contact Triggered

Troubleshooting for fault code 8Y (external switching contact).

4Y - Flow Temperature Sensor (CH-NTC) Faulty

Troubleshooting steps for fault code 4Y (flow temperature sensor).

4C - Heat Exchanger Temperature Limiter or Flue Gas Temperature Limiter Has Tripped

Troubleshooting for fault code 4C (temperature limiters tripped).

6A - Flame Not Detected

Troubleshooting steps for fault code 6A (no flame detected).

EC - Internal Fault

Troubleshooting for fault code EC (internal fault/mains voltage).

6C - Flame Detected Even When the Burner is Switched Off

Troubleshooting for fault code 6C (flame detected when burner off).

P - Appliance Not Defined

Troubleshooting for fault code P (appliance type not defined).

6 Inspection and Maintenance

6.1 Safety Instructions for Inspection and Maintenance

General safety guidelines for inspection and maintenance procedures.

6.2 Check the Heat Exchanger

Procedures for inspecting and testing the heat exchanger.

6.3 Check the Electrodes and Clean the Heat Exchanger

Steps for checking and cleaning electrodes and heat exchanger.

6 Inspection and Maintenance (Continued)

6.4 Cleaning Condensate Trap

Procedure for cleaning the condensate trap.

6.6 Checking the Strainer in the Cold Water Pipe

Procedure for checking the strainer in the cold water pipe.

6.5 Check Diaphragm (Flue Gas Non-Return Device) in the Mixer Unit

Steps for checking the diaphragm in the mixer unit.

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