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Faults With Klargester BioDisc Sewage Treatment Plants

It is worth mentioning that we highly recommend the Klargester BioDisc as a Sewage Treatment solution. The system itself is among the most reliable on the market. However, as with anything mechanical, things can sometimes go wrong. In the event of a breakdown, Klargester tanks have a control panel that immediately identifies the fault so you can get it fixed as fast as possible.


Klargester BioDisc Sewage Treatment Systems bought prior to 2022 will have a Klargester Green Control Panel, while newer systems are supplied with a white Darcy control panel. The Klargester green control panel triggers a low voltage beacon to indicate any fault on the system. See below fault codes.


Klargester flashing light fault codes and what they mean.

F1No Power to the unitCustom Fuse boxN/A
F2The blower pressure has failed (PPFDS kit required)N/AN/A
F3The high level alarm has activated (where fitted)N/AN/A
F4The fuse box to the blower/motor has failedF33.15
F5The fuse to the discharge pump (where fitted) has failedF15.0
F6The fuse to the chemical dosing pump has failedF40.25
F7The fuse to the recirculation pump has failedF25.0
F8The loss of rotation alarm has been activatedN/AN/A
--The unit has had a fault which has now corrected itselfN/AN/A


If your Klargester system is serviced by a Klargester approved servicing engineer such as RA Dalton then they will be able to attend site to rectify the issue quickly. Servicing engineers check a number of components at each servicing visit, see below checks that should be made on a Klargester BioDisc system on regular intervals for general wear and tear, signs of misuse or any issues that would be covered by Klargester warranty.



If you have a problem with your Klargester BioDisc or other Klargester Tank, the Klargester flashing beacon light will flash. If the beacon light is continuously solid, this is an indication that there is a fault with the beacon itself.

We supply a huge range of Klargester spares providing drainage direct to your door for any problem. Call us with any query on 01388537050.

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