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Junkers ZWC 30-3 MFAM User Manual

Junkers ZWC 30-3 MFAM
87 pages
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Table of Contents

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Junkers ZWC 30-3 MFAM Specifications

General IconGeneral
CategoryBoiler
Fuel TypeNatural Gas
Hot Water Output30 kW
Heating Capacity24 kW
Efficiency93%
Operating Pressure3 bar
Weight42 kg
TypeCombi Boiler

Summary

Safety Precautions and Symbols

Safety Precautions

General safety advice and warnings for installation, operation, and maintenance.

Appliance Layout and Hydraulic Diagrams

Appliance Layout

Diagrams and identification of components for various appliance models.

Electrial Wiring Diagrams

Troubleshooting

How to Use Error Codes

Instructions on how to interpret and resolve error codes.

Failure Display

Categorization of appliance failures and their display.

Error Codes

Detailed troubleshooting steps for error code A4 (flue gas leak).

A2 and C3 Flashing

Troubleshooting for flue gas leakage from the combustion chamber.

A3 IS FLASHING

Troubleshooting for blocked flue gas NTC.

d4 IS FLASHING

Troubleshooting for fast temperature increase detected in CH.

C1 IS FLASHING

Troubleshooting for air pressure switch (APS) opening during operation.

C4 IS FLASHING

Troubleshooting for APS contacts remaining closed.

C6 IS FLASHING

Troubleshooting for air pressure switch not closing.

E9 IS FLASHING

Troubleshooting for over heat thermostat trigger.

A6 IS FLASHING

Troubleshooting for defective combustion chamber NTC.

E2 IS FLASHING

Troubleshooting for defective CH NTC.

A8 IS FLASHING

Troubleshooting for bus communication interruption.

EA IS FLASHING

Troubleshooting for flame not detected.

F7 IS FLASHING

Troubleshooting for flame detected after appliance switched off.

d3 IS FLASHING

Troubleshooting for Link 161 on St8 not detected.

b1 IS FLASHING

Troubleshooting for code plug not detected.

A9 IS FLASHING

Troubleshooting for DHW NTC not installed correctly.

FA IS FLASHING

Troubleshooting for flame detected after gas turned off.

E0/F0 IS FLASHING

Troubleshooting for internal failure.

Fd IS FLASHING

Troubleshooting for reset button pressed too long.

AA IS FLASHING

Troubleshooting for plate heat exchanger blocked or DHW NTC.

D5 IS FLASHING

Troubleshooting for IPMx modules NTC defect.

D7 IS FLASHING

Troubleshooting for gas valve cables not connected.

Gas Setting Values

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