Viessmann Series B2HA 60 Operations Instructions download pdf (Page 119)

119

Dis-

played

fault

code

Const. Weath.-

comp.

System char-

acteristics

Cause Measures

4C X Mixer closes Lead break,

flow tempera-

ture sensor,

heating circuit

3 (with mixer)

Check flow temper-

ature sensor (see

page 142)

50 X X No DHW heat-

ing by the boil-

Short circuit,

cylinder tem-

perature sen-

sor

Check cylinder

temperature sen-

sor (see

page 137)

58 X X No DHW heat-

ing by the boil-

Lead break,

cylinder tem-

perature sen-

sor

Check cylinder

temperature sen-

sor (see

page 137)

90 X X Control mode Short circuit,

temperature

sensor

Check sensor /

on solar control

module.

91 X X Control mode Short circuit,

temperature

sensor

aÖ

Check sensor aÖ

on solar control

module.

92 X X No solar DHW

heating

Short circuit,

collector tem-

perature sen-

sor

Check temperature

sensor

on solar

control module or

sensor on the

Vitosolic.

93 X X Control mode Short circuit,

cylinder tem-

perature sen-

sor

Check temperature

sensor at terminal

S3 to the Vitosolic.

94 X X No solar DHW

heating

Short circuit,

cylinder tem-

perature sen-

sor

Check temperature

sensor

on solar

control module or

sensor on the

Vitosolic.

98 X X Control mode Lead break,

temperature

sensor

Check sensor /

on solar control

module.

Troubleshooting

Fault codes

(cont.)

5585 174 GB

Service

1 2 ... 114 115 116 117 118 119 120 121 122 123 124 ... 183 184

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Viessmann Series B2HA 60 Operations Instructions Page 119

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