Blocking Error - Vaillant geoTHERM VWS 61/2 Operating Manual

5 Operation

5.10.6 Blocking error

Errors could occur which result in the shutdown of the
heat pump.
Fault code Error text/description
32 Error heat source sensor T8
Short-circuit in the sensor
33 Error heat circuit pressure sensor
short-circuit in the pressure sensor
34 Error brine pressure sensor
short-circuit in the pressure sensor
40 Error comp outlet sensorT1
Short-circuit in the sensor
41 Error heat source sensor T3
Short-circuit in the sensor
42 Error HP return sensor T5
Short-circuit in the sensor
43 Error HP flow sensor T6
Short-circuit in the sensor
44 Error external sensor AF
Short-circuit in the sensor
45 Error DHW tank sensor SP
Short-circuit in the sensor
46 Error HB flow sensor VF1
Short-circuit in the sensor
47 Error HB return sensor RF1
Short-circuit in the sensor
48 Error flow sensor VF2
Short-circuit in the sensor
52 Sensors are not suited to the hydraulic
plan
60 Frost protection heat source monitor-
ing source outlet
Error 20 has occurred three times in a
row
61 Frost protection heat source monitor-
only VWW ing source outlet
Error 21 has occurred three times in a
row
62 Frost protection heat source monitor-
only VWS ing source outlet
Error 22 has occurred three times in a
row
Table 5.7 Error shutdown
26
Fault code Error text/description
63
only VWW
Emergen-
72
cy mode
possible
81
possible
83
possible
84
possible
90
possible
possible
91
possible
possible
94
possible
95
possible
96
WW opera-
tion possi-
Table 5.7 Fault-induced shutdown (ctnd.)
ble
• Consult your expert technician about doing this.
_
h
possible
Once the expert technician has remedied the error and
possible
reset the error he can restart the heat pump.
possible
No ground water flow
Error 23 has occurred three times in a
row
Flow temperature too high for under-
floor heating
Flow temperature is for 15 min. higher
than a set value (max. HK temp. + com-
pr. hysteresis + 2 K).
Coolant pressure too high
Error 27 has occurred three times in a
row
Coolant pressure too low check heat
source
Error 28 has occurred three times in a
row
Coolant pressure outside the range
Error 29 has occurred three times in a
row
Heating system pressure too low
Pressure <0.5 bar
Heat pump switches off and starts up
automatically when the pressure in-
creases to over 0.7 bar
Brine pressure too low
Pressure <0.2 bar
Heat pump switches off and starts up
automatically when the pressure in-
creases to over 0.4 bar
Phase breakdown check fuse
One or more phases broken down.
Incorrect direction of rotation, ex-
change comp. phases
Phase sequence incorrect
Error pressure sensor
refrigerant circuit
short-circuit in the pressure sensor
Note!
Only an expert technician can remedy
the fault and reset the error code.
Operating Manual geoTHERM VWS/VWW 0020051547_02
Emergen-
cy mode
possible
_
possible
possible
possible
_
possible
possible
possible
possible