Malfunction
51 | 68
B
A
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TD
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8.2
Troubleshooting
The "Fault that cannot be acknowledged" is only allowed to be rectified by a specialist
installer.
CAUTION:
Hot surfaces when working on internal parts, e.g. motor, circuit board.
● Surface temperatures can reach up to 75 °C – risk of burns.
► Allow the components to cool down before carrying out any work on interior
components.
The possible faults in the table (leakage, etc.) are not detected by the fault indication LED.
1.
Disconnect the dosing system from the power supply.
2.
Eliminate the fault using the fault table.
Malfunction
Explanation
Remedy
Leak on the hose
connections.
Hose expanded too far.
Loosen the hose at the relevant hose connection and cut
off approx. 2 cm from the hose.
Replace the hose and reattach the hose.
Dosing rate declines.
Crystalline deposits and
contamination of parts
that come into contact
with media.
Flush the dosing system thoroughly.
Change the valves or the complete pump.
Change the dosing valve.
Clean or replace the hoses.
Dosing pump does not
suck despite full stroke
movement.
Suction head exceeded
(max. 1.2 m).
Reduce the suction head.
Liquid has fallen below
the required level (empty
signal).
Replace the container with a new one.
Valve dry.
Lift up the suction line briefly.
Flush the pump thoroughly by hand.
Suction line is kinked or
dirty.
Clean the suction line or replace it.
lights up
continuously after
acknowledgement.
Electronics/pump
damaged.
Read out the fault/error type using the Grünbeck
mySettings app. Replace the defective components.
3.
Re-establish the power supply.
4.
Check the function of the dosing system.
If the fault cannot be rectified, further measures can be taken by Grünbeck's technical
service/authorised service company or by specialist installers trained by Grünbeck (see
TD4-CK000 technical service manual).
