Gym Pros
Walking Pad Repair: Fixes for Errors, Slipping & Power Issues

Repair guide

Walking Pad Repair: Fixes for Errors, Slipping & Power Issues

Walking pad won't start, slips or shows an E code? Fixes from WalkingPad, UREVO and Sunny manuals, and when to call a pro.

Published November 5, 2026

TL;DR: The main owner fixes in the manuals are seating the safety key, power-cycling the machine, re-centering or tightening the belt, and lubricating the deck. Error codes mean different things on different models, so look yours up in your own manual instead of a generic list. WalkingPad's FAQ says to power off for about 10 minutes and restart before contacting support. Motor, drum and electrical faults belong with a technician.

This guide draws on manufacturer documents for the WalkingPad R1, UREVO Strol Lite 2-in-1 and Sunny SF-T7971. We couldn't retrieve manuals for the WalkingPad A1, C2 or P1, so if you own one, check your own manual before copying a procedure below.

Quick symptom guide

SymptomMost likely causeFirst checkGo to
Screen is blackPower switch, cable, outletSwitch on, try another cable or outletWalking pad won't turn on
"SAFE" on screenSafety key not in the handrail socketSeat the red keyWalking pad won't turn on
Remote does nothingPairing or batteryRe-pair, check battery orientationWalking pad won't turn on
E code on displayVaries by modelPower off 10 minutes, restartWalking pad error codes
Belt slips under footLow tension or dry deckTension, then lubricationBelt slipping or drifting
Belt drifts to one sideTrackingAdjust per your brand's methodBelt slipping or drifting
Metallic whistle or rubbingMotor brush, drum or coverStop and contact supportNoises, folding and placement

Walking pad won't turn on or won't respond

If your walking pad is not working at all, start with the basics. WalkingPad's Canada FAQ lists these checks:

  • Black screen: make sure the power switch is on. If a white light is on but the screen is black, try a different cable or outlet.
  • "SAFE" on screen: the red safety key isn't in the handrail socket. The machine stays in safe mode without it.
  • Remote not responding: the FAQ says to press the remote's mode button 5 to 8 times to re-pair, and to check the battery orientation if that fails. The R1 manual (p. 11) says to restart the machine and hold the remote's mode button for 5 seconds. If neither works, the remote may need replacing.
  • Remote batteries: the FAQ lists one CR2032 for the C2, A1 Pro, R1 Pro, R2 and Z1, and two AAA batteries for the P1 and C1.
  • App won't connect: the FAQ says the KS Fit app connects over Wi-Fi, not Bluetooth. If the Wi-Fi light flashes fast and the device isn't found, press the large right-side button twice with a 3-second pause, then re-add the device.

On the Sunny SF-T7971, the manual's "will not start" causes are an unplugged cord or a missing safety key (p. 26). To re-sync its remote, hold start/pause for 5 seconds (p. 24).

The R1 manual (p. 13) says to test the safety lock before use: clamp it to your clothing and pull it off to confirm the machine stops.

Walking pad error codes

The same code means different things in different WalkingPad documents. E01 is "software overcurrent" in the R1 manual (p. 12) but a "drive communication error" in WalkingPad's Canada FAQ. E02 is "hardware overcurrent" on the R1, a Hall sensor fault in the KingSmith WPS1F manual (p. 15), and "motor abnormality" in the FAQ. Don't trust a code list that doesn't name your model.

The R1 and R1 Pro manual lists these codes, with no first-check steps:

CodeMeaning on the R1 / R1 Pro
E01Software overcurrent
E02Hardware overcurrent
E03IPM module overheating
E04Low-voltage protection
E05Overvoltage
E06Motor phase loss
E07Motor block rotation protection
E08Sensor fault
E09Motor unable to start
E12Motor overcurrent protection
E13Overloading protection
E14Hall signal loss
E15Communication fault

First step for any WalkingPad code: the FAQ says to power off for about 10 minutes and restart. Per the FAQ, E10 and E11 clear on their own after a countdown, and codes starting with E can sometimes come from shipping. If a code persists, contact support.

Other brands give more owner-level checks:

  • UREVO Strol Lite (p. 17): stop the workout at once on any code and unplug before service. The manual's over-current entry (E05) lists user weight above the 120 kg limit, a foreign object blocking the motor or rollers, an over-tightened belt and too little lubricant as causes. Its communication codes point to the controller-to-display and signal-cable connections. The page text we could read was partly scrambled, so confirm the details in your own manual.
  • Sunny SF-T7971 (pp. 26-27): E01 or E13 is a message failure, so check the console-to-control-board wires. E05 is a current overload from a wrong supply voltage or a stuck moving part, so listen for odd noises and check for a burning smell. E09 means the treadmill is upright or not horizontal. For anything unresolved, Sunny points to [email protected].

For general code-reading habits across treadmills, see treadmill error codes explained.

Belt slipping or drifting

Each brand uses a different method, so follow yours. WalkingPad and UREVO adjust one side only, while Sunny turns both bolts in opposite directions. Unplug first, and make small changes. After each one, run the belt for a minute or two and check.

BrandBelt drifts to one sideBelt slips
WalkingPad R1 (p. 16)Drifts left: left screw 1/4 turn clockwise. Drifts right: right screw 1/4 turn clockwise. Test at 3 km/h (2 mph).Both screws 1/2 turn clockwise at the same time
UREVO Strol Lite (p. 15)Same method: drifts left, left screw 1/4 turn clockwise; drifts right, right screw 1/4 turn clockwiseBoth screws 1/2 turn clockwise, then walk at 0.6 mph. Don't over-tighten
Sunny SF-T7971 (p. 18)Drifts right: right bolt 1/4 turn clockwise and left bolt 1/4 turn counter-clockwise. Drifts left: the reverse. Test at 4 mphBoth bolts one full turn clockwise, keeping both sides equal

On the WalkingPad R1 the adjustment hole is at the rear. None of the manuals we read give the hex wrench size, so use the wrench supplied with your walking pad.

Sunny's manual (p. 19) says the best tension is when the belt lifts 50 to 75 mm off the board, and not to adjust the belt while lubricating. Its table says a slipping belt means insufficient tension, while a hesitating belt means too little lubricant or a belt that's too tight. If your belt hesitates rather than slips, check lubrication before tightening further.

For a longer look at telling a worn belt from one that just needs adjusting, see how to fix a treadmill belt.

How to lubricate a walking pad

Lubrication advice differs by brand, and the older and newer WalkingPad sources don't agree on quantity.

  • WalkingPad R1 manual (p. 16): power off and unplug, lift the belt edge, and smear silicone oil on the inner surface of the belt. Run at 3 km/h for 10 to 20 seconds. The manual calls for 5-10 ml per lubrication, every three months, and warns that excess oil can cause slipping. A 2020 WalkingPad blog post says 1-2 drops instead. Use the manual's amount.
  • WalkingPad UK (2025): use 100% silicone treadmill oil, about 5-10 ml total. It says household oils, WD-40 and petroleum sprays are unsuitable.
  • UREVO Strol Lite (p. 16): 5-10 ml each time, recommended every 125 miles. Loosen both idler screws counter-clockwise and count the turns, lift the belt edges, apply to the center of the deck only, then re-tighten the same number of turns.
  • Sunny SF-T7971 (pp. 19, 25): lubricate before first use. An OIL icon and a beep every 10 seconds appear at 188 miles. Hold STOP for 3 seconds to clear it.

Intervals by weekly use, from the Sunny manual and WalkingPad UK's guide:

Weekly useSunny SF-T7971WalkingPad UK
Under 3 hoursEvery 6 monthsEvery 5-8 months
3-5 hoursEvery 3 monthsEvery 3-5 months
Over 5 hoursEvery 2 monthsEvery 2-3 months

WalkingPad UK says "nearly all" walking pads need lubrication and that a few premium models have permanently lubricated decks, but it names none. If your manual doesn't say, ask the manufacturer before assuming yours is maintenance-free. For general technique, see our belt lubrication guide.

Noises, folding and placement

WalkingPad's FAQ says a slamming noise calls for a treadmill mat, while a metallic whistle from the motor carbon brush, abnormal drum noise lasting days, or the motor cover rubbing the belt are reasons to contact support.

Placement matters too. The R1 manual (pp. 13-15) says to use it on flat, firm ground rather than thick carpet, keep 2000 mm clear behind and 500 mm at each side, power off before folding, and lock the handrail before moving it. Sunny (p. 2) asks for 8 ft behind and 2 ft at each side.

Respect the weight limits. The R1 manual (p. 1) gives a 110 kg maximum user weight, the Sunny SF-T7971 manual (p. 2) gives 220 lb, and the UREVO manual mentions a 120 kg limit.

Warranty basics

Check the warranty before you pay for a repair or open anything.

  • WalkingPad UK: 2 years for eligible faults in normal home use, covering the motor, controller, main frame and display. It excludes wear items (belt, rollers, bearings), accidental or liquid damage, misuse, improper maintenance and unauthorized repairs or third-party parts. Claims go by email with proof of purchase, model and photos or video.
  • WalkingPad Australia: the period is on each product page, and the warranty covers parts only. Labor and call-outs are billed separately.
  • UREVO Strol Lite: frame 1 year, other components 90 days, home use only.

We couldn't find WalkingPad's US warranty terms or Sunny's warranty in the manual, so check your own paperwork.

When to call a technician

The WalkingPad FAQ and R1 manual describe no internal owner repair. UREVO and Sunny tell owners to open the motor hood or replace boards, but internal electrical and motor work is a technician job. Call a pro, or the manufacturer if you're in warranty, if:

  • A code returns after a 10-minute power-off
  • You smell burning or hear a metallic whistle from the motor
  • The cord or plug is damaged, or the unit was dropped (R1 manual p. 2; Sunny p. 1 say to return it to a service center)
  • The belt still slips after correct tension and lubrication
  • The fix means replacing a motor, controller or board

To find a technician near you, see our guide to treadmill repair near you. For typical prices, see the treadmill repair cost guide, and for whether an older machine is worth fixing, the repair or replace guide.

FAQ

Can I repair a walking pad myself?

Cleaning, belt centering and tensioning, lubrication, re-pairing the remote and seating the safety key are owner jobs per the manuals. Motor, drum, carbon-brush and electrical faults should go to support or a technician.

What does E01 mean on a walking pad?

It depends on the model. It is software overcurrent in the WalkingPad R1 manual, a drive communication error in WalkingPad's Canada FAQ, and a communication fault on the UREVO Strol Lite. Check your own manual, and try a 10-minute power-off first.

How often should I lubricate a walking pad?

The WalkingPad R1 manual says every three months. Other sources scale it by use: roughly every 2 to 3 months above 5 hours a week, and every 5 to 8 months below 3 hours. Use 100% silicone oil unless your manual says otherwise.

Why is my walking pad belt slipping?

Sunny's manual ties slipping to insufficient tension. Tighten per your brand's method in small steps, and check lubrication if the belt hesitates. Too much oil can also cause slipping, per WalkingPad and UREVO.

Sources

Related guides