Fault diagnosis and rectification
98 Installation instructions geoTHERM 0020051574_04
11
11.2 Faults in eBUS components
Fault code Error text/description Possible cause Solution
1 XXX address YY not achievable A component XXX connected via the
eBUS, e.g. VR 60 with the address
YY is not recognised.
> Check the eBUS lead and plug.
> Check that the address switch is correctly
set.
4 XXX Address YY Sensor
fault ZZZ
A sensor ZZZ of one of the compo-
nents XXX connected via the eBUS,
with the address YY, is faulty.
> Check the Pro-E plugs on the circuit boards.
> Check the sensors for correct operation.
> Replace the sensors.
5 XXXX setpoint not achieved XXXX setpoint not achieved. > Check the temperature target value.
> Check the contact of the temperature sensor
with the medium to be measured and estab-
lish a proper contact if necessary.
11.1 Faults in eBUS components
11.3 Faults with temporary warning
The following warnings are caused by temporary malfunc-
tions in the operation of the heat pump. The heat pump,
including the compressor, remains in operation. The follow-
ing faults are displayed in the Menu
1 as a warning mes-
sage and in the Error History (¬ operating instructions).
Fault code Error text/description Possible cause Solution
26 Overheating on compressor
pressure side
Excessively high output with a high
flow temperature.
VRC DCF receiver with integrated
outside temperature sensor not con-
nected (display "-60 °C" = calculated
flow temperature too high).
> Reduce the heating curve.
> Check the required heating output (floor dry-
ing, building shell) and reduce if necessary.
> Connect the VRC DCF receiver provided.
36
(VWS only)
Low brine pressure Pressure drop in the brine circuit
due to leaks or air cushions.
Pressure < 60kPa (0.6 bar)
> Check the brine circuit for leaks.
> Top up the brine fluid.
> Rinse and bleed the brine circuit.
11.2 Faults with temporary warning
To Next Page
Loading...
Need help?
General