To Next Page

To Previous Page

Displayed

fault code

System character-

istics

Cause Measures

F80 Function at the ex-

ternal extension faul-

Short circuit, lower

cylinder tempera-

ture sensor S2 at

the external exten-

sion

Check sensor.

Installation and

service instruc-

tions for external

extension

F88 Function at the ex-

ternal extension faul-

Lead break, lower

cylinder tempera-

ture sensor S2 at

the external exten-

sion

Check sensor.

Installation and

service instruc-

tions for external

extension

F90 Function at the ex-

ternal extension faul-

Short circuit, upper

cylinder tempera-

ture sensor S3 at

the external exten-

sion

Checking the sensor

Installation and

service instruc-

tions for external

extension

F98 Function at the ex-

ternal extension faul-

Lead break, upper

cylinder tempera-

ture sensor S3 at

the external exten-

sion

Check sensor.

Installation and

service instruc-

tions for external

extension

FA9 Function of Open-

Therm control unit

faulty

OpenTherm com-

munication inter-

rupted

Check OpenTherm con-

necting lead. Check set-

ting of parameter P07.

Troubleshooting

Fault display

(cont.)

5837146

Fuel Type	Gas
Max. Water Temperature	85 °C
Type	Condensing Boiler
Gas Type	Natural gas / LPG
Efficiency	Up to 98%

Viessmann Vitopend 100-W Installation And Service Instructions

Table of Contents

Other manuals for Viessmann Vitopend 100-W

Questions and Answers:

Viessmann Vitopend 100-W Specifications

Related product manuals