Troubleshooting 10
0020250180_00 geoTHERM Installation and maintenance instructions
27
Note
If a fault message is present, the product re-
mains in comfort protection mode after it is
reset. After the product is reset, the fault mes-
sage is displayed first before the message
Limp home mode (comfort protection)
ap-
pears again.
▶
Check the component that is displayed and replace it.
9.4
Cleaning the product
Caution.
Risk of material damage caused by un-
suitable cleaning agents.
▶
Do not use sprays, scouring agents, de-
tergents, solvents or cleaning agents that
contain chlorine.
▶
Clean the casing and operator control elements with a
damp cloth and a little solvent-free soap.
9.5
Checking and correcting the filling
pressure of the heating installation
If the filling pressure falls below the minimum pressure, a
fault message is shown in the display.
–
Minimum heating water pressure:
≥
0.05 MPa
(
≥
0.50 bar)
▶
Top up the water to start up the heat pump again. (See
section: Filling the system (
→
Page 17)).
▶
If you notice frequent drops in pressure, determine and
eliminate the cause.
9.6
Checking and correcting the filling
pressure in the brine circuit
If the filling pressure falls below the minimum pressure, the
heat pump is automatically shut down and a fault message is
shown in the display.
–
Minimum brine fluid pressure:
≥
0.05 MPa (
≥
0.50 bar)
▶
Top up the brine fluid to start up the heat pump again.
(See section: Filling the brine circuit (
→
Page 17)).
–
Brine fluid operating pressure: 0.1 … 0.2 MPa (1.0
… 2.0 bar)
▶
If you notice frequent drops in pressure, determine and
eliminate the cause.
9.7
Carrying out a restart and test operation
Warning.
Risk of injury due to hot and cold com-
ponents.
The heat pump must only be started up after
all the casing sections have been installed.
▶
Before starting up the unit, fit all of the
casing sections for the heat pump.
1.
Start up the heat pump system.
2.
Check that the heat pump system is working without
any problems.
10 Troubleshooting
10.1
Troubleshooting
10.1.1 Checking the status codes
10.1.1.1 Calling the Live Monitor
Menu
→
Live Monitor
–
You can call up status codes in the heat pump's display
and these codes provide you with information about the
current operating status of the heat pump.
Status codes (
→
Page 34)
10.1.1.2 Status code meanings
The status codes provide you with information about the
current operating status of your product.
If several operating statuses occur at the same time, the
applicable status codes are displayed alternately, one after
the other.
10.1.2 Querying the fault memory
Menu
→
Installer level Fault list
The heat pump has a fault memory. You can use this to
query the last ten faults that occurred in chronological order.
If a DCF sensor is connected, the date on which the fault
occurred is also displayed.
You can only call up fault lists if faults have previously oc-
curred.
Display views
–
Number of faults that occurred
–
The fault currently selected with fault number
F.xxx
You can find a list of the sensor characteristic values in the
appendix.
Sensor characteristics for the VR 10 external temperature
sensor (
→
Page 38)
Sensor characteristics for the internal temperature sensors
(
→
Page 39)
Sensor characteristic value for the VRC DCF outdoor tem-
perature sensor (
→
Page 40)
10.1.3 Resetting the fault memory
1.
Press
(
Delete
).
2.
Confirm that you wish to clear the fault memory by
pressing
(
OK
).
10.1.4 Overview of fault codes
You can find an overview of the fault codes in the appendix.
You can find a list of the surface-mounted sensor resist-
ances in the appendix.
10.1.5 Restarting the installation assistant
You can restart the installation assistant any time by calling it
up manually in the menu.
