Viessmann Vitocal 300-G BW, Installation And Service Instructions Manual

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127
The info line in the display contains a left hand and right hand group of figures:
Compressor stage 1 Compressor stage 2
Fault Reports Fault Reports
Group 1 Group 2 Group 3 Group 4 Group 5 Group 6 Group 7 Group 8
0 0 0 0 0 0 0 0 00 00 00 00
■ In connection with compressor stage
1, we differentiate between faults and
messages (groups 1 to 4).
■ In connection with compressor stage
2, the same differentiation is made
between faults and messages (group
5 and 8 respectively).
■ Faults and messages are stored and
displayed before the heat pump mod-
ule has switched off the compressor.
Group 1 (faults)
01 Suction pressure sensor faulty
02 Suction gas temperature sensor
faulty
04 Condensation pressure sensor
faulty
08 Condensation temperature sensor
faulty
10 LPG temperature sensor faulty
20 Stepper motor electronic expansion
valve (EEV) faulty
Group 2 (faults)
00 no further faults
Group 3 (messages)
01 Actual condensation temperature
too high
02 Condensation pressure too high
(control high pressure)
04 Inadequate superheating
08 Excessive superheating
10 Inadequate suction pressure (low
pressure)
Group 4 (messages)
01 MOP mode enabled
02 Configuration error
Load classes
Call up diagnosis page "Load classes" via key "
Ó
H ":
■ Hours run [h] display of the heat pump
subject to the respective load.
■ Hours run [h] are cumulative starting
from the commissioning. These can-
not be deleted.
■ The temperature ramp is the result of
the temperature differential between
the evaporation temperature and the
condensation temperature.
■ The temperature ramp is shown for
compressor stage 1 and, if installed,
also for compressor stage 2.
Load classes
1. In case of temperature ramp < 25 to
32 K
2. In case of temperature ramp 25 to
32 K
3. In case of temperature ramp 32 to
41 K
4. In case of temperature ramp 41 to
50 K
5. In case of temperature ramp > 50 K
Troubleshooting
Control unit diagnostics
(cont.)
5368 522 UAE
Service