A motorized shade only knows where to stop because someone told it. Knowing how to set limits on motorized shades is the last step of every install and the first thing to check when a shade stops short, overruns or refuses to move. This guide covers the common pattern, why shades lose limits and when a reset is not enough.
How do you set limits on motorized shades?
Put the motor into limit-setting mode, usually with the program button on the motor head or remote. Move the shade to the upper stop and confirm with the button the instructions name, until the motor jogs. Repeat at the lower stop, save, then run a full cycle. Button names and sequences vary, so the motor maker’s instructions govern.
What travel limits are and why a shade needs them
A shade motor turns a roller tube, and it has no sense of where the window is. The upper and lower limits are two positions stored in the motor: the point where the shade stops when fully raised and the point where it stops when fully lowered. Everything else, from a favourite position to a scene in the hub, is measured between them.
Set the upper limit too high and the bottom bar can wind into the headrail or cassette; set the lower limit too low and fabric can unroll past the stop. Set them too close together and many motors will not move at all.
Limits are not the same as the sensor thresholds used in automation. Those are covered in motorized shade automation; this guide is about where the shade physically stops.
Before you set limits: check power, pairing and the shade
A shade that seems to have lost its limits often has a simpler fault. Check these first:
- Power. Batteries charged and fitted the right way round, or the supply on and every connector seated. A weak battery or a long low-voltage run can stop a motor short; the power side is covered in wired vs battery motorized shades.
- Pairing. The remote or hub must be paired to the right motor and channel, or you will set limits on the shade next door.
- Mounting. Brackets level and secure, and the fabric rolling straight. A shade ordered or mounted wrong will not be fixed by limits; check against how to measure for motorized shades.
- Obstructions. Nothing on the sill, no handles or cranks in the path, and the fabric not snagged on trim.
How to set limits on motorized shades: the common pattern
Every motor maker has its own sequence, but most follow this shape; take the actual button presses from the motor’s instructions:
- Enter limit mode. Press or hold the program button on the motor head or remote, or the button combination the instructions give. The motor usually confirms with a jog: a short up and down movement.
- Move to the upper stop. Run the shade up and stop it where it should rest fully open, clear of the headrail.
- Fine-tune and confirm. Tap up or down to adjust in small steps, then hold the confirm button until the motor jogs again.
- Move to the lower stop. Run the shade down to where it should rest fully closed, usually just above the sill on an inside mount.
- Confirm and save. Hold the confirm button until the motor jogs. Some motors ask you to confirm a direction or exit programming mode as a separate step.
- Test a full cycle. Run the shade fully up and fully down with the remote, then from the hub or keypad if it has one.
Fine-tuning limits without damaging the shade
Most limit problems come from rushing these points:
- Stop short of hard stops. Do not drive the bottom bar into the headrail or set a lower limit below the factory or physical stop the instructions describe.
- Keep favourite and limit positions separate. A favourite or intermediate position is not a limit. Saving one as a limit can make the shade travel past where it should.
- Leave a sensible span. Limits set very close together can leave the motor unable to move.
- Re-check after fabric settles. Run a few cycles and look again, especially on a new shade.
On a room full of shades, set one, test it, then match the rest to it so the bottom bars line up.
Why a motorized shade lost limits
One shade maker’s guide calls lost limits the most typical problem with powered shades, and forum threads point to a few repeat causes:
| Cause | What you see | What to do |
|---|---|---|
| Power loss or low voltage | Shade stops mid-travel or jogs only | Restore power, then re-set limits |
| Flat or failing battery | Slow travel, stops short | Charge or replace, then test |
| Obstruction while closing | Stops above the old lower limit | Clear it, re-set the lower limit |
| Shade pulled by hand | Positions drift or no longer match | Re-set limits; avoid pulling |
| Favourite saved as a limit | Overruns or stops in the wrong place | Clear and re-set both limits |
Obstruction is the one that catches people out. In one RV forum thread, a shade that closed onto an item on the sill kept stopping several inches above its proper lower limit afterwards, and a basic reset did not cure it. Pulling a motorized shade by hand is also a risk; unless the motor is designed for manual operation, it can upset the position the motor counts from.
Motorized shade not closing fully: troubleshooting
When a motorized shade is not closing fully, work from the simple to the drastic:
- Check power and the battery first, as above.
- Clear the path and run the shade up and down twice.
- Re-set only the lower limit, if the motor lets you change one limit on its own.
- Re-set both limits.
- If that fails, do a factory reset and commission the shade from scratch.
If the shade jogs but will not travel, it may be in programming mode or missing a limit. If it still stops short with good power and fresh limits, the fabric, tube or motor may need service: call the dealer or the shade maker.
Limit reset vs factory reset
A limit reset changes where the shade stops and keeps everything else. A factory reset usually clears the limits, the favourite position, the direction setting and the pairing with every remote and hub. After a factory reset the shade has to be paired again, given its limits again and added back into any scenes.
Some motors use a power-cycle sequence for the reset, done by switching the supply on and off in a pattern; on a hardwired shade that is often easier at the breaker than at the shade. Follow the timing exactly.
Safety and the maker’s instructions
Keep people and pets clear, work from a stable ladder, and never hold the fabric to stop it. Cordless operation is part of the case for motorized shades: the Window Covering Manufacturers Association’s revised safety standard, ANSI/WCMA A100.1-2022, which went into effect on June 1, 2024, eliminates free hanging operating cords on custom products.
The motor maker’s instructions govern every step here. Leave a copy, and the pairing details, with the client.
Where to find motorized shade products
The motorized shades category and the Z-Wave category sit in the Security, Surveillance and Control division. For pricing and availability, ask your sales representative through the Bursma contact page or at our Columbus, Ohio branch, or open a Bursma dealer account.
Frequently asked questions
Why did my motorized shade lose its limits?
Usually a power cut, low battery or supply voltage, an obstruction, or the shade being pulled by hand. Fix the cause, then re-set the limits.
What does it mean when a motorized shade jogs?
A jog is a short up and down movement. Most motors use it to confirm that they have entered programming mode or saved a setting.
Can I set limits without the original remote?
Often, using the program button on the motor head, but it depends on the motor. Some need a paired remote or the maker’s app.
Should I use a factory reset to fix a shade that stops short?
Only as a last resort. Try power checks and a limit reset first, because a factory reset also clears the pairing and favourite positions.