Vaillant geoTHERM exclusive, Operating Manual

Page: 27 / 32

27
Operating Manual geoTHERM exclusive VWS 0020071929_00
5.10.6 Fault-induced shutdown
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 sensorT1
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
hydraulic plan _
60 Frost protection heat source
monitoring source outlet
Error 20 has occurred three times in
a row
possible
62 Frost protection heat source
monitoring source outlet
Error 22 has occurred three times in a
row
possible
Table 5.7 Error shutdown
Fault code Error text/description
Emergency
mode
72 Flow temperature too high for
underfloor heating
Flow temperature is for 15 min. higher
than a set value (max. HK temp. +
compr. hyst 2 K).
_
81 Coolant pressure too high
Error 27 has occurred three times in a
row
possible
83 Coolant pressure too low check heat
source
Error 28 has occurred three times in a
row
possible
84 Coolant pressure outside the range
Error 29 has occurred three times in a
row
possible
90 Heating system pressure too low
Pressure <0.5 bar
Heat pump switches off and starts up
automatically when the pressure
increases to over 0.7 bar
_
91 Brine pressure too low
Pressure <0.2 bar
Heat pump shuts down and goes into
operation automatically when the
pressure rises above 0.4 bar
possible
96 Error - sensor fault
Short circuit in pressure sensor
possible
97 no power for compressor possible
Table 5.7 Fault-induced shutdown (ctnd.)
• Consult your expert technician about doing this.
h Note!
Only an expert technician can remedy
the fault and reset the error code.
Once the expert technician has remedied the error and
reset the error he can restart the heat pump.
Operation 5