Introduction

Need Fault / Error Codes For Brooks / Acorn Stairlifts?

If you have an Brooks or Acorn stairlift then you’re probably on this page after searching for error codes. In case nothing below can help, we’re an Irish stairlift sales and repair company that provides fast support across all types of stairlifts including Acorn stairlifts.

PLEASE be aware that there’s 3 main models of straight stairlifts and 2 models of curved stairlifts – each with their own range of codes. More details have been provided on each set of fault / error codes.

At any time you can visit our dedicated stairlift repair website on www.stairliftrepair.ie

Brooks / Acorn Straight Stairlift Fault Codes

Covering the Brooks / Acorn Superglide 120 and 130 straight stair lifts

If your stairlift displays a single digit code then chances is your stairlift has the T498 version circuit board. For example the older type stairlifts using the T498 board had single error codes like “1” or “5” etc. If your stairlift displays a single code and doesn’t flash between two codes then chances is it’s using the old fault code system.

But for example if it normally displays a two digit code for example like “C4, E5, E3” etc then it’s using the newer T502 circuit board design, or an even newer board model.

Be aware these codes are for the STRAIGHT lifts only and you can see the codes for their curved stairlifts further down this blog.

Brooks or Acorn 120 Single Digit Fault Codes (Straight Stairlift) 2004-2010

If your Acorn stairlift displays a single code and doesn’t flash between another letter or number, then it’s using the T498 board or earlier. Below we’ve listed the codes and probable solution.

CodeDescription
0Batteries Low – Ensure lift is on a charge point and not beeping. If persistent then new batteries needed. Get a quote here.
1Normal – The lift is charging, if the lift doesn’t move then there may be fault with the toggle switch. Try using remote to see if it works.
2Not Charging – Lift is beeping and showing this code as the lift isn’t charging. Check to see if the transformer is plugged in.
3Over Speed Governor Fault – The OSG has engaged, hand wind the stairlift up around 6 inches to reset this.
4Seat Turned – Seat is in the turned position, put the seat back into it’s normal position for the stairlift to work again.
5Key Switched Off – Turn the key on for the stairlift to work.
6Final Limit Overrun – The lift has gone too far past it’s normal stopping position, hand wind stairlift further back / up depending where it is.
7Footrest Downside Activated – Check to see there’s no obstructions on either side of the footrest.
8Footrest Upside Activated – Check to see there’s no obstructions on either side of the footrest.
9Carriage Upside Activated – Check to see there’s no obstructions on either side of the carriage / drive unit.
ACarriage Downside Activated – Check to see there’s no obstructions on either side of the carriage / drive unit.
CBatteries Flat – Leave it charge for at least 1 hour before using the lift again.
EBrake Fault – Most likely low batteries are the cause but may also be a faulty brake.
FMotor Fault – Try powering off the lift and back on again, if persistent then contact us for a repair.
URelay Fault – Power down the lift and switch back on again, if persistent then the main PCB board is faulty.

Brooks or Acorn 120/130 Double Digit Fault Codes (Straight Stairlift) 2010-2016

Here’s where it gets confusing.. Since around 2010/2011 Acorn switched to the T502 board which uses double codes. Be wary that if your stairlift was made very recently then these codes may not be suitable. The fault codes below cover from 2010 to 2016 models of stairlifts, the latest model is covered further down past these codes below.

CodeDescription
A1Not On Charge Point – This code means the stairlift is normal, however isn’t charging. Ensure lift is on charge point and power supply switched on.
A2Lift Moving Up – The lift is travelling in the upwards direction by means of it’s toggle switch.
A3Lift Moving Down – The lift is travelling in the down direction by means of it’s toggle switch.
A4Lift Moving Up – The lift is travelling in the upwards direction by means of it’s remote controls.
A5Lift Moving Down – The lift is travelling in the down direction by means of it’s remote controls.
C1Battery Charging – Lift is charging normally.
C4Battery Fully Charged – The batteries are fully charged on the stairlift.
C5Battery Fault – There’s a fault with the batteries and most likely needs replacement, contact us for quote.
E1Footrest Upside Activated – Check to see there’s no obstructions on either side of the footrest.
E2Footrest Downside Activated – Check to see there’s no obstructions on either side of the footrest.
E3Carriage Upside Activated – Check to see there’s no obstructions on either side of the carriage / drive unit.
E4Carriage Downside Activated – Check to see there’s no obstructions on either side of the carriage / drive unit.
E5Seat Turned – The seat is in it’s turned position, turn the seat back to normal for lift to work.
E8Battery Low – Drive the stairlift to the charge point top or bottom to recharge batteries.
E9Key Switched Off – Turn the key to the on position for the stairlift to return to normal.
F1Relay Fault – Turn the lift off and on again, if this doesn’t work then the main PCB board may need replacing.
F2Brake Fault – Most likely due to low batteries, let lift charge and if not resolved contact engineer as brake may be faulty.
F3Motor Fault – Turn the stairlift off and on again, if not resolved contact us for repair quote.
F4Motor Over Current – Either the lift is being used past it’s weight limit or the motor is faulty.
F5Battery Fault – Drive the lift down to it’s charge point and leave to charge for 1-2 hours.
F6Final Limit Overrun – The stairlift has gone past it’s intended stop, handwind the stairlift away from the stop a few inches to reset.
F7Overspeed Governor Fault – The OSG has tripped in the stairlift. Handwind the lift 8-10 inches in the UP direction only.
F8Multiple Errors – Multiple safety devices are faulty, contact us for a repair.
H1Multiple Errors – Multiple safety devices are faulty, contact us for a repair.
H2Multiple Errors – Multiple safety devices are faulty, contact us for a repair.
H3Multiple Errors – Multiple safety devices are faulty, contact us for a repair.
H4Safety Device Fault – Multiple safety devices are faulty, contact us for a repair.

Brooks or Acorn 130 Double Digit Fault Codes (Straight Stairlift) 2016 Onwards

Since 2016, Acorn started using the T700 board design. On the lower side of the stairlift cover it should mention “T700” and that’s how you know it’s the latest design board that’s being used.

CodeDescription
A1Not On Charge Point – This code means the stairlift is normal, however isn’t charging. Ensure lift is on charge point and power supply switched on.
A2Lift Moving Up – The lift is travelling in the upwards direction by means of it’s toggle switch.
A3Lift Moving Down – The lift is travelling in the down direction by means of it’s toggle switch.
A4Lift Moving Up – The lift is travelling in the upwards direction by means of it’s remote controls.
A5Lift Moving Down – The lift is travelling in the down direction by means of it’s remote controls.
C1-C5Battery Charging – The batteries are charging with the higher number meaning a fuller state of charge.
C6Battery Fully Charged – The batteries are fully charged on the stairlift.
C7Battery Fault – Charge voltage in the batteries are too low, if not resolved contact us for a repair quote.
C8Battery Fault – Charge voltage in the batteries are too high, if not resolved contact us for a repair quote.
C9Battery Fault – Charger connected but battery is not found or is faulty, if not resolved contact us for a repair quote.
E1Footrest Downside Activated – Check to see there’s no obstructions on either side of the footrest.
E2Footrest Upside Activated – Check to see there’s no obstructions on either side of the footrest.
E4Carriage Downside Activated – Check to see there’s no obstructions on either side of the carriage / drive unit.
E5Carriage Upside Activated – Check to see there’s no obstructions on either side of the carriage / drive unit.
E6Seat Turned – The seat is in it’s turned position, turn the seat back to normal for lift to work.
E7Battery Low – Drive the stairlift down to the lower charge point to recharge batteries.
E9Key Switched Off – Turn the key to the on position for the stairlift to return to normal.
F1Relay Fault – Turn the lift off and on again, if this doesn’t work then the main PCB board may need replacing.
F2Brake Fault – Most likely due to low batteries, let lift charge and if not resolved contact engineer as brake may be faulty.
F3Motor Over Current – Either the lift is being used past it’s weight limit or the motor is faulty.
F5Battery Fault – Drive the lift down to it’s charge point and leave to charge for 1-2 hours.
F6Final Limit Overrun – The stairlift has gone past it’s intended stop, handwind the stairlift away from the stop a few inches to reset.
F7Overspeed Governor Fault – The OSG has tripped in the stairlift. Handwind the lift 8-10 inches in the UP direction only.
H1Safety Ground Fault SW1 – Check there’s no safety wiring wires touching the chassis, if unresolved contact us for a repair.
H2Safety Ground Fault SW2 – Check there’s no safety wiring wires touching the chassis, if unresolved contact us for a repair.
H3Hinge Communication Fault – Check there’s still power switched on from the mains.
H4Safety Ground Fault – Check there’s no safety wiring wires touching the chassis, if unresolved contact us for a repair.

Brooks / Acorn Curved Stairlift Fault Codes

Since 2013 Acorn have moved to the T565 variant of boards for their stairlifts. You’ll know this if the stairlift flashes between 2 codes, for example “C1, E5” etc.

Be aware these codes are for the CURVED lifts only and you can see the codes for their straight stairlifts further up this blog.

Acorn 180 (Previously Acorn 80) Fault Codes (Curved Stairlift) 2013 Onwards

Prior to Acorn Stairlifts buying Bison, they had their own range of codes which are listed below. These older lifts are known to be problematic and a lot of the time the issue may require a board replacement as the older boards were only good for 5 or 6 reprogrammes.

CodeDescription
A1Not On Charge Point – This code means the stairlift is normal, however isn’t charging. Ensure lift is on charge point and power supply switched on.
A2Lift Moving Up – The lift is travelling in the upwards direction by means of it’s toggle switch.
A3Lift Moving Down – The lift is travelling in the down direction by means of it’s toggle switch.
A4Lift Moving Up – The lift is travelling in the upwards direction by means of it’s remote controls.
A5Lift Moving Down – The lift is travelling in the down direction by means of it’s remote controls.
A9Hinge Operating – The lift is waiting on the hinge to operate.
C1Battery Charging – The batteries are charging with the higher number meaning a fuller state of charge.
C2Charger Volts Too Low – Voltage is too low from the charge point, possibly wiring issue or faulty charger.
C3Charger Volts Too High– Voltage is too high from the charge point, possibly a faulty charger.
C4Batteries Charged – The lift is on a charge point and the batteries have fully charged.
C5No Battery – The charger is connected but no batteries have been detected.
E1Footrest Downside Activated – Check to see there’s no obstructions on either side of the footrest.
E2Footrest Upside Activated – Check to see there’s no obstructions on either side of the footrest.
E3Footrest Underplate Activated – Check to see there’s no obstructions underneath the footrest.
E4Carriage Downside Activated – Check to see there’s no obstructions on either side of the carriage / drive unit.
E5Carriage Upside Activated – Check to see there’s no obstructions on either side of the carriage / drive unit.
E6Seat Turned – The seat is in it’s turned position, turn the seat back to normal for lift to work.
E7Battery Low – Drive the stairlift down to the lower charge point to recharge batteries.
E8Heat Sink Over Temperature – High temperature detected on main PCB board, power down for a period to cool down, if no success replace PCB.
E9Encoder Fault – There’s a fault with the drive or levelling encoder. Check encoder is working and replace if no success.
F1Relay Fault – Turn the lift off and on again, if this doesn’t work then the main PCB board may need replacing.
F2Brake Fault – Most likely due to low batteries, let lift charge and if not resolved contact engineer as brake may be faulty.
F3Motor Over Current – Either the lift is being used past it’s weight limit or the motor is faulty.
F4Tilt Motor Fault – Tilt motor demand too high, check for obstructions on both sides of lift.
F5Battery Flat – Drive the lift down to it’s charge point and leave to charge for 1-2 hours, may show an E7 code which will clear itself when recharged.
F6Final Limit Overrun – The stairlift has gone past it’s intended stop, handwind the stairlift away from the stop a few inches to reset.
F7Overspeed Governor Fault – The OSG has tripped in the stairlift. Service engineer required to reset this due to the complexities involved.
F8Tilt Limit Switch – The lift has gone beyond it’s expected angle, possible that the rail has sunken to a negative degree of angle.
F9OSG Pulse Not Present – The lift isn’t detecting OSG rotation when travelling, clean the front face of the rail and failing that replace the OSG.
H1Safety Switch Shorting Or Multiple Fault – There’s either a safety switch grounding with the chassis or there’s multiple faults on the safety loop.
H2Levelling System Over Reacting – There’s a fault with the drive or levelling encoder, contact us if the issue persists for a free quote.
H3Hinge Communication Fault – Check there’s still power switched on from the mains.
H4Secondary Processor Fault U2  – Switch off the lift and back on again, if unresolved contact us for a repair.
H5Memory Store Not Responding – Switch off the lift and back on again, if unresolved replace PCB or contact us for a repair.
H6Hinge End Limits Not Found – Check for obstructions with the powered hinge to ensure it can move up or down freely.
H7Over-tilt Fault – The stairlift has over tilted possibly due to a faulty encoder. If unresolved contact us for a repair.
H8Voltage Supply Limits Reached – Switch off the lift and back on again, if unresolved contact us for a repair.
H9Accelerometer Fault – Switch off the lift and back on again, if unresolved contact us for a repair.
J1Level Difference – Due to the level position changing, the lift needs to be reset by driving the lift to the top charge point.
J2Drive Position Difference – Due to the drive position changing, the lift needs to be reset by driving the lift to the top charge point.
J3Self Levelling Safety Mode – Drive the lift to the top charge point to clear this code.
J4Program Out Of Range – Possible encoder fault or reprogram needed. If unresolved contact us for a repair.
J5Program Fault – The program is not stored or may be corrupted.
J6Program Position Overrun – Drive the stairlift to the top charge point to reset.
J8Hinge Activation Point To Close – The lift is set within 80mm of the parking charge point, move the lift further away on programming.
U1Set Hand Mode (Program Mode)
U2Left Hand Mode Selected (Program Mode)
U3Right Hand Mode Selected (Program Mode)
P1Program Mode Stage 1 (Program Mode)
P2Program Mode Stage 2 (Program Mode)
P3Program Mode Stage 3 (Program Mode)
P4Programming Fail – Ensure charge points are wired and working correctly.
P8Controller Locked (Program Mode)
P9Waiting For Hinge Address Code (Program Mode)
L1-L7Speed Settings – L1 being the slowest all the way up to L7 being the fastest. No more than L4 on vertical bends and L3 on helical bends.
L8Hinge Operation Point (Program Mode)
L9Carriage & Seat Level Address Code (Program Mode)