Viessmann VITOTRONIC 100 GC1B Operations Instructions download pdf (Page 114)

114

Fault codes

Displayed

fault code

System characteris-

tics

Cause Measures

0F Control mode. Service

"0F" is only dis-

played in the fault

history.

Service required

Note

After servicing, set code

"24:0".

30 ■ With DHW cylinder:

Circulation pump

for cylinder heating

on; boiler is main-

tained at set cylin-

der temperature.

■ Without DHW cylin-

der:

Boiler is regulated

by the temperature

controller.

Short circuit, boiler

water temperature

sensor.

Check the boiler water

temperature sensor (see

page 169).

38 ■ With DHW cylinder:

Circulation pump

for cylinder heating

on; boiler is main-

tained at set cylin-

der temperature.

■ Without DHW cylin-

der:

Boiler is regulated

by the temperature

controller.

Lead break, boiler

water temperature

sensor.

Check the boiler water

temperature sensor (see

page 169).

Troubleshooting

Fault display

(cont.)

5600 634 GB

1 2 ... 109 110 111 112 113 114 115 116 117 118 119 ... 183 184

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Viessmann VITOTRONIC 100 GC1B Operations Instructions Page 114

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