How to Replace a Geberit Sigma 30 Flush Plate (UK)
Fit a new 115.883.KH.1 plate on the Geberit Sigma 30 concealed cistern. UK access, cable length and dual-flush setup.
Geberit
Plate SKU
The Geberit Sigma 30 uses the 115.883.KH.1 plate. Alpine white, chrome and matt-black share the mechanism — only the escutcheon changes.
Access
Turn off the isolation valve inside the cistern. Prise the plate off (small lugs top-centre on Geberit). Disconnect the two flush cables — note lengths.
Fit
Cable-set to 30 mm exposed core. Clip to actuator. Test full and half flush before pushing plate home.
Frequently asked questions
- Do I need to drain the cistern?
- No — isolate the fill valve inside, flush once, then work on the plate. Cistern stays wet.
- Are plates interchangeable within the range?
- Yes — all Geberit Sigma plates fit the same UP320/UP720 frame.
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