Acorn 180 curved fault codes

MakerAcorn Stairlifts CONFIRMED
How codes showLetter + number on display under the seat
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Codes (39)

CodeMeaning
BlankSwitched off / asleep CONFIRMED
A1Not charging CONFIRMED
A2 / A3Moving up / down (arm control) CONFIRMED
A4 / A5Moving up / down (remote) CONFIRMED
A9Waiting for hinge CONFIRMED
C1Charging CONFIRMED
C4Fully charged CONFIRMED
E1Footrest edge – downhill side CONFIRMED
E2Footrest edge – uphill side CONFIRMED
E3Under-footplate edge CONFIRMED
E4Carriage edge – downhill side CONFIRMED
E5Carriage edge – uphill side CONFIRMED
E6Seat swivelled CONFIRMED
E7Battery low CONFIRMED
F5Battery flat (alarm) CONFIRMED
F7Do NOT hand-wind down CONFIRMED
C2Charger voltage low INFERRED
C3Charger voltage high INFERRED
C5No battery detected INFERRED
E8Board over temperature INFERRED
E9Encoder fault INFERRED
F1Relay fault INFERRED
F2Brake fault INFERRED
F3Over-current INFERRED
F4Tilt motor fault INFERRED
F6Final limit INFERRED
F8Tilt limit switch INFERRED
F9OSG pulse missing INFERRED
H1Safety switch shorting / multiple faults INFERRED
H2Levelling system error INFERRED
H3Hinge comms INFERRED
H4Second processor fault INFERRED
H5Memory store fault INFERRED
H6Hinge end limits INFERRED
H7Over-tilt INFERRED
H8Supply voltage out of limits INFERRED
H9Accelerometer fault INFERRED
J1 - J3Levelling/position difference or levelling safety mode INFERRED
J4 - J8Program / position / hinge activation errors INFERRED

Codes without a link are status lights or not used, so they don't have their own page.

Models using this control board

Notes: User-level codes confirmed in Acorn's 180 manual; H/J and extra E/F codes only on engineer pages (INFERRED). C codes differ from the 130 (C4 = charged here).

Summarised from public manuals. Always check the product's own manual before any repair.