Cordless Blinds Won't Go Up, Go Down, or Stay Up: What to Check Before You Call It Broken

Which cordless blind problem do you have?

Three different failures get reported as the same complaint, and the fix diverges immediately. Sort yours first.

Every quote and size figure here was read from SelectBlinds' published product pages, warranty page and installation instructions on 2026-09-15. That text changes without notice, so confirm the current page before you order or file.

How does a cordless blind work?

Take the pull cord out of a blind and something has to replace it. On a cordless lift that something is a spring mechanism inside the headrail, set at the factory to counterbalance the weight of that exact shade: that fabric, that width, that drop. Raise the bottom rail and you load the spring; let go and it holds position because the forces balance. Nothing latches, nothing clamps.

That one fact explains every failure below. Weight, width and friction are the only variables the balance cares about, so anything that changes one shows up as a lift that will not move or will not hold.

The alternatives fail somewhere else. A continuous cord loop runs a chain over a clutch: you pull the chain, the clutch grips, and the weight is held mechanically rather than balanced. A motorized shade has a motor and a battery doing the work, so it fails at the battery, the remote or the travel limits. The trade-offs are in the cordless versus motorized comparison, and why cordless became the default is in the blind cord safety rules. SelectBlinds does not leave the cordless failure unnamed: its warranty page lists a covered defect called, in full, "Product Not Raising/Lowering or Loss of Tension."

Why won't my cordless blind go up?

Work the cheap causes first, in the order the maker publishes them. SelectBlinds' installation instructions for its cordless cellular shades carry a troubleshooting entry headed "THE SHADE IS HARD TO RAISE OR LOWER, OR WILL NOT RAISE OR LOWER":

• "Shades cannot be forced into tight inside mount window openings. If an inside mount, check that the shade is installed correctly. Make sure there is clearance between the ends of the shade and the window casement."
• "Check that the installation brackets are level. Shim to level, if necessary."
• "If hold-down brackets are used, make sure they have been released."
• "Make sure the fabric is not caught."

Read that as a hierarchy, because it is one. A binding shade is usually a geometry problem, not a spring problem. The same guide says "Mounting the brackets level is essential for proper operation of the shade," and warns you to "Make sure that no fabric is pinched between the brackets and the headrail." Brackets that are not parallel twist the headrail, and a twisted headrail drags on every lift. Squeeze the shade into an inside mount recess with no side clearance and you get the same drag from the other direction.

Second cause: stiff fabric rather than a dead mechanism. "If the shade is in the lowered position for an extended period of time, extra care needs to be taken when raising the shade. The fabric will relax and may resist lifting." The published correction is "slowly raising the shade completely and then operating several times. This allows the fabric to go back to its pleated state."

Third cause, the expensive one: the shade is bigger or heavier than the cordless lift was rated for. That is a buying decision, not a fault, and the number is on the product page. SelectBlinds' cordless light-filtering honeycomb cellular lists its cordless lift at 13 to 84 inches wide and 12 to 84 inches tall, while the automated version of the same shade runs to 96 inches wide. On a roller or faux wood blind, add debris: anything in the roll or between the slats adds friction the spring was not set to overcome.

Why won't my cordless blind go down?

Start with the hold-down brackets, the cause people forget they installed: the small clips that pin the bottom rail to the sill or frame, common on doors and in kitchens. The published check is blunt: "If hold-down brackets are used, make sure they have been released."

Next, the shade that goes down but will not stay there. If it drifts back above the point you left it, that is documented behavior rather than a defect: "If shade has been in the fully raised position for an extended period of time, it may have a tendency to 'spring back' above the desired length of the shade. This is temporary and can be corrected by completely raising the shade and operating several times."

Then the mechanical causes. There is no cord lock or brake to release on a cordless lift, so a shade that feels locked is being held by something physical: a hold-down, a caught edge, or the rail itself. Pulling from one end is the most common self-inflicted cause. A bottom rail pulled at a corner tilts, jams at an angle in the opening, and binds until you level it again. On a roller or cassette-headed shade, check that the fabric edge is not catching the valance or cassette lip. If the shade has already been forced past its stop, that is the point to stop pulling.

Why won't my cordless blind stay up?

This is the creep: you lift it, it holds for an hour or a day, then it sags an inch at a time. The balance has shifted, and only two things shift it.

The spring has lost tension, which is the seller's own diagnosis in the seller's own vocabulary. SelectBlinds' warranty covers "Product Not Raising/Lowering or Loss of Tension" and remakes the product at no charge for the first 3 years. After that: "All materials can lose original intensity depending on use. This is considered normal wear and tear and is not covered after 3 years."

Or the shade got heavier than the spring was set for. Blackout construction weighs more than light-filtering fabric at the same size, and a wide shade carries more fabric across the same lift. Anything hung from the bottom rail is dead weight the balance never accounted for. A shade in a bath or kitchen window that has taken on moisture deserves the same check: run it through full travel once dry and see whether it holds.

One operating habit produces creep on a shade that was fine. Lifting or lowering with one hand, off-center, racks the mechanism a little at a time, because the two ends travel unequal distances and the fabric loads unevenly. It is cumulative, and it is avoidable.

How do you use cordless blinds the right way?

SelectBlinds publishes the instruction on its product pages. The Classic Roman Shades cordless lift description reads: "Cordless lift shades are designed for a clean look and easy use—no cords needed! Simply raise or lower the shade by gently pushing up or pulling down on the bottom rail. For best results, use two hands and move the shade evenly to keep it level."

Its cordless cellular instructions say the same through the handle: "Hold the handle in the center portion of the bottomrail to ensure level movement." The guide sets the threshold where one grip stops being enough: "For shades 48" wide or under the handle should be placed at the center of the rail. For shades over 48" wide, two handles should be evenly spaced on the rail." The stated reason is balance.

So: two hands, centered or evenly spaced, gentle pressure, full travel. One more line is worth taping inside a cupboard door: "Daily operation of shade will ensure that it performs at its optimal level." A shade that never moves is not being preserved. Do not yank it, do not hang anything from the bottom rail, and do not let a child pull it down by a corner. If small children use the room, the nursery cordless safety guide has the rest.

Can a cordless blind be re-leveled or re-tensioned?

Two different questions, and the sellers answer only one.

Re-leveling is published. SelectBlinds' cordless cellular instructions give the procedure under "ADJUSTING THE SHADE": "Raise and lower the shade several times. If the bottom or intermediate (on Top-Down/Bottom-Up) rail is not level, use the following steps to correct." Then: "BOTTOM RAIL SHADE ADJUSTMENT: Holding the bottomrail with two hands, gently pull down on the side that is too high. Stop when the bottomrail is level." Before you touch the rail, the same entry says to "Check that the window is square by measuring the diagonals."

Re-tensioning is not published, and the word is a trap. SelectBlinds' warranty lists "equalizers and tensioners" among replaceable parts, which reads like a spring adjuster and is not one. Its Roman shade installation guide settles it with a heading: "INSTALLING THE TENSIONER — Continuous Cord Loop Only." That device is the child-safety anchor that holds a cord loop taut against the wall. That same Roman guide publishes no troubleshooting section and no rail-adjustment steps at all, so the cellular procedure above is the only one SelectBlinds prints.

No seller page read here publishes a step for opening a cordless headrail, re-winding a spring or resetting lift tension. Treat the absence as the instruction. Coverage applies "so long as the product is installed in accordance with the installation instructions," and the company "reserve[s] the right to inspect any part or component prior to replacements." A headrail you have taken apart is a poor position to file from.

When is a cordless blind failure a warranty claim?

Almost always, if the shade is still in term. SelectBlinds' free standard warranty "covers any defects -- i.e., something breaks, is damaged, or just plain doesn't work -- in materials and workmanship for up to three (3) years, so long as the product is installed in accordance with the installation instructions. It also covers all internal 'working parts' and mechanisms." Loss of tension is remade at no charge inside that window; parts are free inside it and carry a $5 charge after. Fabric and slats become, in the page's word, "wearable items" that are "not covered after 3 years." On an approved claim, "the only thing you are responsible for is a flat $15 return shipping charge." Find the receipt before you call: the page requires "a Bill of Sale, canceled check or other payment record verifying the original purchase date."

Other sellers draw the line elsewhere, and the label rarely means what it looks like. Bali's lifetime term runs as long as the original purchaser owns the product, but operating cords and 2-inch vinyl slats carry 3 years and motorization 5. Levolor's "limited lifetime" is defined numerically as 10 years. Blindster runs a 1-year limited warranty. How SelectBlinds handles claims in practice is in the SelectBlinds review.

Two limits deserve bluntness. A measuring mistake is never a warranty claim. That is a separate program with its own clock: SelectBlinds' FIT Protection runs 90 days, tolerates a correction within 2 inches per side, and is capped at 1 remake per product and 4 per household for life. And custom shades are made to your numbers and generally cannot be sent back: the returns page states that "because all of our blinds and shades are custom made, we cannot offer a refund or exchange (remake) unless a product is defective." Sellers also apply their own deductions to the size you type. If size is the problem rather than the lift, start at the common measuring mistakes.

When should you stop fixing it and replace it?

Stop when the shade is out of term and the symptom is creep. SelectBlinds has already told you what that is: normal wear and tear, not covered. A spring at the end of its life on a cheap or very wide shade is not a repair job, and no maker publishes a way to re-wind it.

Stop when the shade was cut down: a narrowed blind runs a lift matched to its original width, and nobody publishes a re-specification for it.

Stop when the opening, not the blind, is out of square. Measure the diagonals; if they disagree, an outside mount on flat wall is the durable fix, because the headrail can then hang square whatever the frame is doing. The depth rules are in the minimum mount depth guide.

And stop when a replacement costs less than the afternoon. SelectBlinds' Budget cordless light-filtering cellular is one made-to-measure replacement example, listed at 24 to 72 inches wide and up to 72 inches tall on its cordless lift.

How do you buy a cordless shade that won't do this again?

Respect the published cordless range, and notice that it stops lower than the corded one. On SelectBlinds' Premier light-filtering cellular, the Cordless Lift & Lock runs 13 to 84 inches wide while the Continuous Cord Loop on the identical shade runs 25 to 120 inches. On its Classic Roman Shades, cordless runs 24 to 90 inches wide and 20 to 72 inches tall; the cord loop runs 17 to 94 wide and 16 to 106 tall. Same fabric, same headrail family, and the cordless ceiling is lower in both: 36 inches less width on the cellular, 34 inches less drop on the roman. That gap is weight the spring will not hold.

Above the ceiling, buy a motor rather than a bigger spring. SelectBlinds' motorized Architect blackout roller lists 22 to 96 inches wide and 20 to 108 inches tall, well past where its cordless lines stop. The retrofit versus built-in motorization comparison covers what that costs in wiring and batteries.

Blackout and no-drill variants carry their own smaller ranges: SelectBlinds' Click2Fit total blackout cellular stops at 18 to 78 inches wide and 20 to 78 tall, because the construction is heavier and the headrail changes.

Check the depth before the color. A cordless cellular can need as little as 3/4 inch of inside-mount depth by the installation chart, while SelectBlinds' 2-inch SelectWave cordless faux wood, 11 to 72 inches wide, asks for a 2-inch minimum and is operated by grasping the bottom rail directly, with no tilt wand offered. Too little depth and the headrail sits proud, gets bumped, and comes back out of square.

Do not correct the size yourself. SelectBlinds' instruction is "We will make all the necessary deductions based on the measurements you provide. Do not make your own deductions." Measure the opening in three places, order free samples so you can feel how heavy a blackout fabric is before it hangs, and check your numbers against the measure-and-fit tool and the cellular measuring guide.