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Acorn & Brooks Straight Stairlift Error Codes Explained

Brooks acorn error code display

Acorn & Brooks Straight Stairlift Error Codes: Sometimes you just want to know what that flashing red code means on the side of your stairlift. It might not even be an error. You may be able to easily sort it out yourself without the inconvenience and cost of calling out an engineers. This articles explains the Acorn and Brooks error codes. Full list of Acorn & Brooks T700 error codes below.

Acorn & Brooks Straight Stairlift Error Codes

What do the Acorn and Brooks Stairlift error codes mean?

You may have mis-placed the manual, and now you want to know what those pesky codes mean on your stairlift? E5, F6, C4, it flashes away to its hearts content. Some Acorn & Brooks stairlift error codes may not require a rocket scientist, but possibly a stairlift engineer. It all depends on what the particular code means. Some issues can be a simple fix you can do yourself.

Warning: Stairlifts are powerful electrical devices

Please remember that stairlifts can be very dangerous items if you aren’t trained or experienced. Never dismantle any part of a stairlift or take the covers off. Leave more serious issues to a fully qualified stairlift engineer.

Are you looking for the Acorn 180 error codes?


The error codes in the table below refer to the latest (as of August 2021) Acorn and Brooks control system, the T700. It can be identified by the label on the side of your stairlift.

# MeaningSolution
A1Lift ready to useNormal
A2Lift moving up (arm control)Normal
A3Lift moving down (arm control)Normal
A4Lift moving up (remote control)Normal
A5Lift moving down (remote control)Normal
A9Lift waiting for auto hinge to operateNormal
C1Low battery voltage level, trickle charge activeNormal
C2Low battery voltage level, half charge activeNormal
C3Medium battery voltage level, full charge activeNormal
C4 Medium battery voltage level, half charge active Normal
C5High battery voltage level, sustained charge activeNormal
C6Battery full, no charge activeNormal
C7Power supply voltage to lowCheck power supply
C8Power supply voltage to highCheck power supply
C9Main battery faultCall Engineer
E1Safe edge activated (footrest down, underplate)Check
E2Safe edge activated (footrest up side)Check
E4Safe edge activated (cover down side)Check
E5Safe edge activated (cover up side)Check
E6Seat not in correct position (swivelled)Move seat to travel position
E7Low battery (upward movement prohibited)Drive to charge point
E8Aux switch operated while seat not swivelledCall Engineer
E9Key switch offTurn on key switch
F1Relay faultTurn off and on, call engineer
F2Brake faultCall Engineer
F3Motor overcurrentCheck for obstructions, call engineer
F5Main batteries are flatCall Engineer
F6Final limit switch over-runCall Engineer
F7OSG (over-speed-gear) activatedCall Engineer
H1Safety grounded to chassisCall engineer
H2Safety grounded to earthCall engineer
H3Auto hinge communication faultCall Engineer
H4Secondary processor U2 not respondingCall Engineer
H5Memory store not responding EEPROMCall Engineer
H6Auto Hinge end limits not found (timeout)Call Engineer
H8Heat sink over-temperatureAllow lift to cool
H9Main motor PWM FaultCall Engineer

If in doubt call a qualified engineer

Anglian lifts deal with almost every brand of stairlift and home lift. We are always happy to have a chat. So, if you have a problem please feel free to give us a call. Our team will always try to resolve your issue over the phone promptly and efficiently before we consider sending an engineer. However, to get you up and running again it may need one of our supplier trained engineers.

Many times issues are related to a stairlift’s battery. Take a look at our guide to stairlifts batteries.

We have comprehensive lists of stairlift error codes for many makes and models of stairlifts an domestic home lifts. Feel free to give us a call if you need any advice contact us.

Please make sure you always use a company that is a member of the BHTA. This gives you peace of mind that you are dealing with a business that complies with their code of practice.

Acorn and Brooks straight stairlifts error codes summary

The Acorn and Brooks straight stairlift are usually a very reliable machines. However, if you do see an error code we hope this list gives you a guide. Feel free to give us a ring 01733 971 975 or drop us a message, even out of hours.

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Picture of Phil Rice
Phil Rice
Phil Rice has been in the Mobility Industry for the past 25 years, specialising in stairlifts, home lifts, hydraulic platform lifts, hoists and through floor lifts. He has in depth technical knowledge and experience in both the manufacturing and retail channels within the United Kingdom and the United States of America. Phil is currently the Managing Director of Anglian Lifts Ltd in Peterborough and a Board Director of the British Healthcare Trades Association (BHTA), prior to this he was the MD at Anglia Stairlifts Ltd, MD of MediTek Stairlifts Manufacturing facility (based in County Durham) and the President of MediTek Incorporated in Apex, North Carolina, USA. Linkedin

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