Troubleshooting Calling Up The Fault Display; Fault Codes; Information On Fault Codes; Fault Code Table - Viessmann Vitotrol 350 Installation And Service Instructions Manual

Troubleshooting
Calling up the fault display
Symbol in the display footer will be shown red as
fault indicator.
To call up the cause of the fault, tap on
Active faults / messages
Incoming Designation
04/09/2014 01 Reg. circuit 1: Fault, local htg. network supply, flow sensor
17:04:22 55 Lead break
Fig. 27

Fault codes

Information on fault codes

Fault codes for the regulated circuits are incremented in the hexadecimal system. For examples, see the follow-
ing table
Fault 51, regulated circuit 1 to 20
Regulated circuit 01
1 51
Regulated circuit 02
2 51
Regulated circuit 03
3 51
Regulated circuit 04
4 51
Regulated circuit 05
5 51
Regulated circuit 06
6 51
Regulated circuit 07
7 51

Fault code table

Displayed fault System characteristics
code
20
21
22
20
For an explanation of the fault code see chapter "Fault
codes". Some faults are displayed as plain text.
.
Ack
History
Regulated circuit 08
8 51
Regulated circuit 09
9 51
Regulated circuit 0A
10 51
Regulated circuit 0B
11 51
Regulated circuit 0C
12 51
Regulated circuit 0D
13 51
Regulated circuit 0E
14 51
Cause
Fault, boiler flow tempera-
ture sensor short circuit
Fault, boiler return tem-
perature sensor short cir-
cuit
Fault, flue gas tempera-
ture sensor short circuit
For further details regarding the cause of the
fault, see the boiler operating instructions.
Regulated circuit
15
Regulated circuit
16
Regulated circuit
17
Regulated circuit
18
Regulated circuit
19
Regulated circuit
20
Measures
Boiler water temperature sensor,
short circuit
Boiler return temperature sensor,
short circuit
Flue gas temperature sensor, short
circuit
0F
51
10
51
11
51
12
51
13
51
14
51