Viessmann VITOTRONIC 200 Service Instructions Manual page 82

Troubleshooting
Diagnosis (service scans)
Fault index "Err" (Table E)
Posi- Active
tion code
Components and fault messages reported directly by EEV controller.
1 1
2
2 1
2
4
8
3 0
4 0
Messages
5 1
82
(cont.)
Explanation
Liquid gas temper-
ature sensor
faulty.
EEV stepper motor
faulty.
Low pressure sen-
sor faulty.
Suction gas tem-
perature sensor
faulty.
High pressure sen-
sor faulty.
Hot gas tempera-
ture sensor faulty.
N/A
Inadequate evapo-
ration pressure
(low pressure
fault).
System charac-
teristics
■ Compressor
remains in oper-
ation.
■ Energy state-
ment (see
page 91) will
not be calculated
correctly.
Compressor is
switched off.
Compressor is
switched off.
■ Compressor
remains in oper-
ation.
■ Energy state-
ment (see
page 91) will
not be calculated
correctly.
—
Compressor is
switched off.
Measures
Check sensor;
replace if required.
Replace EEV.
Check sensor;
replace if required.
—
As for "D3 Low
pressure" (see
page 62).