Viessmann Vitoladens 300-W Installation And Service Instructions For Contractors page 67
Wall mounted oil condensing boiler for the combustion of fuel oil to din 51603-1 el (low sulphur)
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Also See for Vitoladens 300-W:
- Installation and service instructions manual (152 pages) ,
- Service instructions for contractors (108 pages) ,
- Technical manual (72 pages)
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Fault codes
(cont.)
Fault code dis-
System characteristics
played
28
Regulates without flow tem-
perature sensor (low loss
header)
30
Burner blocked
38
Burner blocked
40
Mixer closes.
44
Mixer closes.
48
Mixer closes.
4C
Mixer being closed
50
No DHW heating by the boil-
er
58
No DHW heating by the boil-
er
90
Control mode
91
Control mode
92
No solar DHW heating
93
Control mode
94
No solar DHW heating
98
Control mode
99
Control mode
9A
No solar DHW heating
9b
Control mode
9C
No solar DHW heating
9E
Control mode
Cause
Lead break, system flow
temperature sensor
Short circuit, boiler water
temperature sensor
Lead break, boiler water
temperature sensor
Short circuit, flow temper-
ature sensor, heating cir-
cuit 2 (with mixer)
Short circuit, flow temper-
ature sensor, heating cir-
cuit 3 (with mixer)
Lead break, flow tempera-
ture sensor, heating circuit
2 (with mixer)
Lead break, flow tempera-
ture sensor, heating circuit
3 (with mixer)
Short circuit, cylinder tem-
perature sensor
Lead break, cylinder tem-
perature sensor
Short circuit, temperature
sensor
/
Short circuit, temperature
sensor
aÖ
Short circuit, collector
temperature sensor
Short circuit, cylinder tem-
perature sensor
Short circuit, cylinder tem-
perature sensor
Lead break, temperature
sensor
/
Lead break, temperature
sensor
aÖ
Lead break, collector tem-
perature sensor
Lead break, cylinder tem-
perature sensor
Lead break, cylinder tem-
perature sensor
No or inadequate flow rate
in collector circuit, or tem-
perature limiter has re-
sponded.
Troubleshooting
Measures
Check low loss header sensor (see
page 73).
If no low loss header sensor is
connected, set code 52:0.
Check boiler water temperature
sensor (see page 73)
Check boiler water temperature
sensor (see page 73)
Check flow temperature sensor
(see page 77)
Check flow temperature sensor
(see page 77)
Check flow temperature sensor
(see page 77)
Check flow temperature sensor
(see page 77)
Check sensors (see page 73)
Check sensors (see page 73)
Check sensor
on solar control
/
module.
Check sensor
on solar control
aÖ
module.
Check temperature sensor
solar control module or sensor on
the Vitosolic.
Check temperature sensor at con-
nection S3 on the Vitosolic.
Check temperature sensor
solar control module or sensor on
the Vitosolic.
Check sensor
on solar control
/
module.
Check sensor
on solar control
aÖ
module.
Check temperature sensor
solar control module or sensor on
the Vitosolic.
Check temperature sensor at con-
nection S3 on the Vitosolic.
Check temperature sensor
solar control module or sensor on
the Vitosolic.
Check solar circuit pump and solar
circuit. Acknowledge fault mes-
sage.
on
&
on
%
&
on
on
%
67
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