Operating Manual geoTHERM VWS/VWW 0020051578_01
26
5.12.5 Temporary malfunctions
The heat pump is shut down temporarily and starts
up again independently when the cause of the fault is
removed.
Depending on the error the heat pump switches back on
automatically after 5 or 60 minutes.
Take note of the error code and text and discuss this
during the next inspection with the expert technician.
Fault code
Error text/description
20
Frost protection heat source monitoring source
outlet
Temperature difference of the heat source > set
value "permitted temp. difference"
This error message is deactivated as standard and
can only be activated via vrDIALOG parameter
"permitted temp. difference" (20 K difference
means deactivated).
21
(only VWW)
Frost protection heat source over. source outlet
Source outlet temperature too low (<4 ºC)
22
(only VWS)
Frost protection heat source over. source outlet
Source outlet temperature too low
(<parameter freezing protection in menu A4)
23
(only VWW)
No ground water flow
Integrated flow switch does not detect any volume
flow
27
Coolant pressure too high
The integrated high pressure switch tripped at
30 bar (g).
The heat pump cannot be restarted until after
60 min. at the earliest.
28
Coolant pressure too low
The integrated low pressure switch tripped at
1.25 bar (g).
29
Coolant pressure outside the range
If the error occurs twice in a row the heat pump
cannot be started until after 60 min. at the earliest.
Table 5.6 Temporary malfunctions
5.12.6 Blocking error
Errors could occur which result in the shutdown of the
heat pump.
Fault code Error text/description
Emergency
mode
32
Error heat source sensor T8
Short-circuit in the sensor
possible
33
Error heat circuit pressure sensor
short-circuit in the pressure sensor
34
Error brine pressure sensor
short-circuit in the pressure sensor
possible
40
Error comp outlet sensor T1
Short-circuit in the sensor
possible
41
Error heat source sensor T3
Short-circuit in the sensor
possible
42
Error HP return sensor T5
Short-circuit in the sensor
possible
43
Error HP flow sensor T6
Short-circuit in the sensor
possible
44
Error external sensor AF
Short-circuit in the sensor
possible
45
Error DHW tank sensor SP
Short-circuit in the sensor
possible
46
Error HB flow sensor VF1
Short-circuit in the sensor
possible
47
Error HB return sensor RF1
Short-circuit in the sensor
possible
48
Error flow sensor VF2
Short-circuit in the sensor
WW operation
possible
52
Sensors are not suited to the hydrau-
lic plan
_
60
Frost protection heat source moni-
toring source outlet
Error 20 has occurred three times
in a row
possible
61
only VWW
Frost protection heat source moni-
toring source outlet
Error 21 has occurred three times in
a row
possible
62
only VWS
Frost protection heat source moni-
toring source outlet
Error 22 has occurred three times in
a row
possible
Table 5.7 Error shutdown
5 Operation
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Страница 3: ...For the owner Operating manual geoTHERM VWS VWW Heat pump GB ...
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Страница 68: ...0020051578_01 GBES 032009 Subject to alterations Reservado el derecho a introducir modificaciones ...