What are the Stairlift fault codes used for?
Digital fault codes
The Acorn and Brooks straight stairlift displays a series of Stairlift fault codes. These fault codes are for diagnostic purposes. They help the user or stairlift engineer quickly identify the current status or potential problem.
This is especially useful when trying to explain over the phone to a Stairlift engineer exactly what has happened or gone wrong with the lift. Using these informative codes enables the Stairlift engineer to quickly diagnose the exact cause of the fault or issue. In many cases they can be used them to resolve the problem over the phone. This saves the user money by not having to pay for a callout.
How to use the Stairlift fault codes
The very first versions used a series of traffic light coloured led’s to display the fault codes. These were quite hit and miss, especially when the led’s became loose or desoldered from the circuit board in the arm. Also, when carrying out a Stairlift service, these are invaluable for determining whether individual safety circuits are working correctly or not. It eventually moved on to a digital display which showed various letters and numbers in single format as in the following table:
Acorn & Brooks Superglide 120
Appropriate to PCB model no. T498
| Display Code | Description | Possible Fault |
|---|---|---|
| BLANK | Power down | Check battery isolation switch is in the on position |
| 0 | Batteries (Low) | Batteries 17v or less |
| 1 | Normal | If there is a toggle fault, try a remote handset |
| 2 | No charge, audible bleep | Transformer unplugged, lift not on charge point, or power cut |
| 3 | OSG | Handwind stairlift clockwise to reset |
| 4 | Seat turned | Seat not in travel position, safety arm (if fitted) not down |
| 5 | Key off | Turn key on |
| 6 | Final limit | Overrun. Handwind stairlift up or down slightly |
| 7 | Footrest down | Lower safety edge activated |
| 8 | Footrest up | Upper safety edge activated |
| 9 | Carriage up | Upper safety cover activated |
| A | Carriage down | Lower safety cover activated |
| C | Batteries flat | Leave on charge for approx 1 hour |
| E | Brake fault | Try reset. Possible low batteries. Leave on charge |
| F | Motor | Try reset. Call engineer |
| U | Relay fault | Carry out reset. Unplug charger from wall, turn off lift for 5 minutes |
The next generation of Acorn and Brooks stairlifts refined these fault codes by prefixing them with a letter such as ‘E’ for error. This enabled a greater list of stairlift fault codes to be used. These gave a more accurate display in real time of the stairlifts current status. The following table shows the list of Acorn and Brooks stairlift fault codes used on that particular model:
Acorn & Brooks Superglide 130
ISO – BSI version T502 PCB
| Display Code | Status | Description | Solution |
|---|---|---|---|
| No Display | Normal | Power down – Sleep mode | Check power switch is on. Activate toggle switch to wake |
| A1 | Normal | No charge. Lift will beep | Check mains is on. Activate toggle switch and drive stairlift to charge point |
| P0 – P3 | Normal | No movement | Both directional buttons pressed on remote at same time |
| A2 | Normal | Lift moving up | Lift operating normally |
| A3 | Normal | Lift moving down | Lift operating normally |
| A4 | Normal | Lift moving up (Remote) | Lift operating normally |
| A5 | Normal | Lift moving down (Remote) | Lift operating normally |
| C1 | Normal | Battery charging | Lift operating normally |
| C4 | Normal | Battery fully charged | Lift operating normally |
| C5 | Fault | Battery fault | Contact engineer if not resolved |
| E1 | Normal | Safety edge activated (Footrest up) | Check footrest UP safety edge for obstruction |
| E2 | Normal | Safety edge activated (Footrest down) | Check footrest DOWN safety edge for obstruction |
| E3 | Normal | Safety edge activated (Carriage up) | Check carriage UP safety edge for obstruction |
| E4 | Normal | Safety edge activated (Carriage down) | Check carriage DOWN safety edge for obstruction |
| E5 | Normal | Seat not in position | Turn seat to normal position. Make sure safety arm or hinge is down |
| E8 | Normal | Battery low | Activate directional toggle and drive to charge point |
| E9 | Normal | Key switch off | Turn key to on position |
| F1 | Fault | Relay fault | Reset stairlift. Contact engineer if not resolved |
| F2 | Fault | Brake fault >18v | Reset stairlift. Charge batteries. Contact engineer if not resolved |
| F3 | Fault | Motor fault | Reset stairlift. Contact engineer if not resolved |
| F4 | Fault | Motor over current | Check user weight. Reset stairlift. Contact engineer if not resolved |
| F5 | Fault | Battery fault | Drive stairlift down to charge point. Leave to charge |
| F6 | Fault | Final limit overrun | Hand wind stairlift up (Clockwise) to reset OSG |
| F7 | Fault | OSG switch | Hand wind stairlift up (Clockwise) to reset OSG |
| F8 | Fault | System lockout | Reset stairlift |
| H1 | Normal | Multiple operating error | Check all safety edges. Contact engineer if not resolved |
| H2 | Normal | Multiple operating error | Check all safety edges. Contact engineer if not resolved |
| H3 | Normal | Multiple operating error | Check all safety edges. Contact engineer if not resolved |
| H4 | Fault | Safety device fault | Contact engineer if not resolved |
In 2016 all Acorn and Brooks stairlifts were fitted with a brand new board which used new software. This board now had auxiliary options built in to it instead of using daughter boards so basically a ‘one board fits all’ solution. The new board now also used a different charger and yet again, a more refined set of stairlift fault codes. The table below shows that list of Acorn and Brooks stairlift fault codes:
Acorn & Brooks Superglide 130 (T700)
Control Board T700
| Display Code | Status | Description | Solution |
|---|---|---|---|
| No Display | Normal | Power down – Sleep mode | Check power switch is on. Activate toggle switch to wake |
| A1 | Normal | No charge. Lift will beep | Check mains is on. Activate toggle switch and drive stairlift to charge point |
| A2 | Normal | Lift moving up | Lift operating normally |
| A3 | Normal | Lift moving down | Lift operating normally |
| A4 | Normal | Lift moving up (Remote) | Lift operating normally |
| A5 | Normal | Lift moving down (Remote) | Lift operating normally |
| A9 | Normal | Lift operating the hinge section | Lift operating normally |
| C1 – C5 | Normal | Battery is charging | C1 being battery low in charge progressively increasing to C5 sustained charge |
| C6 | Normal | Battery fully charged | Lift operating normally |
| C7 | Fault | Battery fault. Charge voltage too low | Contact engineer if not resolved |
| C8 | Fault | Battery fault. Charge voltage too high | Contact engineer if not resolved |
| C9 | Fault | Battery fault. Charger connected but battery is not found or is faulty | Contact engineer if not resolved |
| E1 | Normal | Safety edge activated (Footrest DOWN) | Check footrest DOWN safety edge for obstruction |
| E2 | Normal | Safety edge activated (Footrest UP) | Check footrest UP safety edge for obstruction |
| E4 | Normal | Safety edge activated (Carriage DOWN) | Check carriage DOWN safety edge for obstruction |
| E5 | Normal | Safety edge activated (Carriage UP) | Check carriage UP safety edge for obstruction |
| E6 | Normal | Seat not in position | Turn seat to normal position. Make sure safety arm or hinge is down |
| E7 | Normal | Battery low | Activate directional toggle and drive to charge point |
| E9 | Normal | Key switch off | Turn key to on position |
| F1 | Fault | Relay fault | Reset stairlift. Contact engineer if not resolved |
| F2 | Fault | Brake fault | Reset stairlift. Charge batteries. Contact engineer if not resolved |
| F3 | Fault | Motor overcurrent fault | Reset stairlift. Contact engineer if not resolved |
| F5 | Fault | Battery fault. Audible beep | Operate toggle or remote to stop alarm. With E7 on the display drive stairlift to nearest charge point. Leave to charge |
| F6 | Fault | Final limit overrun | Hand wind stairlift up (Clockwise) to reset OSG |
| F7 | Fault | OSG switch | Hand wind stairlift up (Clockwise) to reset OSG |
| H1 | Normal | Safety grounded to chassis | Check all safety circuits on SW1. Contact engineer if not resolved |
| H2 | Normal | Safety grounded to chassis | Check all safety circuits on SW2. Contact engineer if not resolved |
| H3 | Normal | Hinge communication fault | Check mains is still connected and charger turned on. Contact engineer is problem not resolved |
| H6 | Fault | Hinge end position not reached | Check for obstructions around the hinge section. Contact engineer if not resolved |
It is not advisable to carry out any inspections or repairs without the correct equipment or experience. Central Mobility have experienced stairlift engineers that can attend to stairlift breakdowns and callouts to carry out inspections and repairs. The list of Acorn and Brooks Stairlift fault codes above are for reference only. If unsure then please contact us on 0800 1 707023