Viessmann VITOTRONIC 100 GC1B Service Manual download pdf (Page 104)

Troubleshooting

104

Diagnosis (continued)

Retrieving fault codes from the fault memory (error history)

All faults which have occurred are stored and can be retrieved by scanning.

The scanning sequence starts with the most recently stored fault code.

1. Press

and simultaneously

for approx. 2 seconds.

Scanning of error history is

activated.

2. Access the individual fault codes

by pressing the or button.

Sequence of

stored fault

codes

Fault code

Last (most recent)

fault code

Last fault code

3. Press .

All stored fault codes can be

deleted by pressing

Scanning of error history is

terminated.

5351 338 v1.6

1 2 3 4 5 6 7

1 2 ... 99 100 101 102 103 104 105 106 107 108 109 ... 131 132

Installation and 1
Service Instructions 1
VITOTRONIC 100, GC1 1
General information 2
Product Information 4
General Information 5
Heating System Types 5
Start-up 6
Scanning Service Information 6
Troubleshooting 6
Functional Description 6
Additional Information 6
Circuit Diagram 1 8
Circuit Diagram 1 (continued) 9
Circuit Diagram 2 10
Circuit Diagram 3 11
Circuit Diagram 3 (continued) 12
Circuit Diagram 4 13
Circuit Diagram 4 (continued) 14
Circuit Diagram 5 15
Circuit Diagram 5 (continued) 16
Circuit Diagram 6 17
Circuit Diagram 6 (continued) 18
Circuit Diagram 7 19
Circuit Diagram 7 (continued) 20
Circuit Diagram 8 21
Circuit Diagram 8 (continued) 22
Circuit Diagram 9 23
Circuit Diagram 9 (continued) 24
Circuit Diagram 10 25
Heating system types 26
IMPORTANT 26
Circuit Diagram 11 27
Circuit Diagram 12 29
Circuit Diagram 13 31
Circuit Diagram 14 (CM2 only) 33
Circuit Diagram 15 (CM2 only) 35
Installation 37
Sensor Connection 49
(CM2 only) 72
Procedure (overview) 84
Steps (continued) 86
Overview of Service Levels 92
Scanning service information 93
Troubleshooting Steps 99
Diagnosis 100
Diagnosis (continued) 101
Boiler Temperature Control 105
Heating Circuit Control 106
DHW Tank Temperature Control 106
Functional description 107
Overview 108
Technical Data 109
System Components 109
System Components (continued) 110
Coding 1 115
Coding 1 (continued) 116
Coding 2 117
Coding 2 (continued) 118
Coding 2 ((continued) 119
Wiring Diagrams 125
Wiring Diagrams (continued) 126
GC1 Series 130
Parts List 131
Additional information 132
Quick Reference 132

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Viessmann VITOTRONIC 100 GC1B Service Manual Page 104

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