Belt stopped and showed message ERR22

It sounds like there might be a problem with the belt or the motor. Here are a few things you can try to troubleshoot the issue:

1. Check the belt tension and make sure it is properly adjusted. If the belt is too loose, it may slip on the deck and cause the treadmill to stop.
2. Check the belt and deck for any visible damage. If the belt is damaged or the deck is worn, it may cause the treadmill to stop.
3. Make sure that the motor and controller are properly connected and functioning correctly. You may want to check the wiring and make sure there are no loose or damaged connections.
4. If you have checked all of these things and the treadmill is still not working properly, it is possible that the motor or controller is malfunctioning. In this case, you may need to have the treadmill serviced by a professional.

Have to check the speed sensor. Either the speed sensor is faulty or the can be dust or speed sensor alignment.
If you wish to get some details; check the site linked here. Pull up older posts.
http://electro-medical.blogspot.com/

check to see if the belt that you changed was reinstalled correctly
with the proper tension because if the belt is too tight or too loose
these simptoms may be the result of poor adjustment.you need
just a small amount of play in that belt where you can take your index finger and softly poke the belt which should have a small
amount of play.go over what you did so that you can find where you have went astray

Step 1:

ERR 1 - Motor Movement

ERR1 indicates a speed issue. In this case, the motor speed as reported from the optic sensor differs

from the speed setting.

Analysis: Optic sensor signal issue -- Either the optic sensor signal is not right, or it is read incorrectly, or

the signal is not reaching the display.

Clean the s.speed , test for open or faulty-see the diagram for adjust. tight the connector very well.

God bless you

Step 2:

hai ,
pls check 12pin communication cable and speed sensor wire also

Dear Sir:
I can read you trouble, and follow the next steps:
ALIGNING AND ADJUSTING THE RUNNING BELT
The correct alignment of the running belt is critical to the smooth operation of the treadmill. The belt is properly aligned at the factory. However, during shipping and handling or by use on an uneven surface, the belt may move off center and require a few simple adjustments. Before aligning the running belt, check its operation by following the procedure in Checking the Alignment of the Running Belt. If you determine that the belt needs alignment, follow the instructions here. CAUTION: Special care must be taken when aligning the running belt. Turn OFF the treadmill while adjusting or working near the rear roller. Remove any loose clothing and tie back your hair. Be very careful to keep your finger or any other object clear of the belt and rollers, especially in front of the roller and behind the deck. The treadmill will not stop immediately if an object becomes caught in the belt or rollers. Realigning the belt takes a few simple adjustments. If you are unsure about this procedure, call Precor Customer Support (see Obtaining Service.) Take the following steps to align the running belt on the treadmill. To ensure your safety, make all adjustments while the treadmill is OFF. 1. Make sure the treadmill is OFF and the running belt has completely stopped. 2. Locate the right belt adjustment bolt in the rear end cap of the treadmill. (To determine left and right, stand at the rear of the treadmill and face the display.) See Diagram 24. The direction you turn the bolt depends on how the belt is tracking. Make all belt adjustments on the right rear corner bolt using the hex key provided. • If the belt is off center to the RIGHT, turn the adjusting bolt ¼ turn clockwise, which moves the running belt to the left. • If the belt tracks off center to the LEFT, turn the bolt ¼ turn counterclockwise; this moves the belt to the right. Important: Do not turn the adjusting bolt more than ¼ turn at a time. Overtightening the bolt can damage the treadmill. 3. Turn the unit ON. 4. Stand beside the treadmill and press QUICKSTART. 5. If you are prompted for a password, press INCLINE ??¼, SPEED ??¼, SPEED ??². The running belt starts automatically after the 3-second countdown appears on the display. 6. Press the SPEED ??² key until the display shows a speed of 3 mph (5 kph). 7. Walk around to the rear of the unit and observe the running belt for a few minutes. The belt should run centered along the running bed. If the belt drifts off center, you will need to make adjustments. CAUTION: If you hear any chafing or the running belt appears to be getting damaged, stop the running belt immediately by pressing the red STOP button. Contact Precor Customer Support. 8. If the belt needs additional alignment, repeat steps 1 through 7 until the belt is properly aligned. 9. After aligning the belt, press the STOP button and RESET. Turn OFF the treadmill. Tighten any loose fasteners or other components on the equipment. If you hear unusual noises or you feel that the treadmill is in need of repair or service, contact Precor Customer Support. Refer to Obtaining Service.
Finally, check if the power cord is loose, connect it again. a) See if the breaker of Home is tripped? b) See if the breaker of the Treadmill is tripped. If do the Belt is very Tighted! loose a little. Try again.
Thank you in advance, if you need assistance, you can contact me, Blessing. sincerely.
E. CUADRA Managua, Nicaragua. C.A.

To calibrate the speed follow these steps.
Press stop and speed up and place the safety key in its spot.
release the stop and speed up.
Press stop again. The windows on the console (speed & time) will be all zeros.
Press speed up, the time window will increase. The belt should start to move. Increase this number to 85. This is maximum speed. Adjust the potentiometer to the correct maximum speed. The console will beep until the correct speed is adjusted (+ or - .2mph).
If the machine suddenly goes dead when in use, you may have a static electricity problem.
Check that the ground pin is present on the plug and check your outlet for a proper ground connection.

With the safety key in place, press and hold “ELEVATION UP” and “SPEED DOWN” for 5 seconds. The software version will appear in display window shortly before model number appears. Press “ENTER” to accept correct model number IF YOU CANNOT GET INTO CALIBRATION EITHER UPPER CONSOLE ELECTRONICS OR OVERLAY CONSOLE ASSEMBLY HAS FAILED.
• Press “STOP” to enter “ENG1”. Press “ENTER”. PLEASE NOTE: HR Window = “0” for miles, “1” for kilometers, treadmill will calibrate in kilometers if set for kilometers. STEP 2 MINIMUM SPEED • Press “ELEVATION DOWN” button, “P0” will appear in display. • Press “START” button, the running belt will begin to move at minimum speed. • The display window should read approximately “.49 - .51”. • To adjust, press “SPEED UP” or “SPEED DOWN” buttons, the range should be “.49 - .51”. Press and hold “ENTER” to save changes. Press “STOP” to return to “P0”. STEP 3 1/4 SPEED • Press “ELEVATION UP” button, “SP1” will appear in display. • Press “START” button, the belt will move 1/4 speed. • The display should read approximately “2.71 - 2.73”. • To adjust, press “SPEED UP” or “SPEED DOWN” buttons, the range should be “2.71 - 2.73”. Press and hold “ENTER” to save changes. Press “STOP” to return to “SP1”. STEP 4 1/2 SPEED • Press “ELEVATION UP” button, “P1” will appear in display. • Press “START” button, the belt will move at 1/2 speed. • The display should read approximately “6.72 - 6.73”. • To adjust, press “SPEED UP” or “SPEED DOWN” buttons, the range should be “6.72 - 6.73”. Press and hold “ENTER” to save changes. Press “STOP” to return to “P1”. STEP 5 3/4 SPEED • Press “ELEVATION UP” button, “SP2” will appear in display. • Press “START” button, the belt will move at 3/4 speed. • The display should read approximately “9.41 - 9.43”. • To adjust, press “SPEED UP” or “SPEED DOWN” buttons, the range should be “9.41 - 9.43”. Press and hold “ENTER” to save changes. Press “STOP” to return to “SP2”.
STEP 6 MAXIMUM SPEED • Press “ELEVATION UP” button, “P2” will appear in display. • Press “START” button, the belt will move at maximum speed. • The display should read approximately “12.10 - 12.12”. • To adjust, press “SPEED UP” or “SPEED DOWN” buttons, the range should be “12.10 - 12.12”. Press and hold “ENTER” to save changes. Press “STOP” to return to “P2”. STEP 7 MINIMUM ELEVATION • Press “ELEVATION UP” button twice, “P4” will appear in display. • The display should ready approximately “190 - 205”. • To adjust, press “ENTER” for value which should read “190 - 205”. Use “SPEED UP” or “SPEED DOWN” buttons. Press and hold “ENTER” to save changes. Press “STOP” to return to “P4”. STEP 8 MAXIMUM ELEVATION • Press “ELEVATION UP” button, “P5” will appear in display. • The display should read approximately “750 - 765”. • To adjust, press “ENTER” for value which should read “750 - 765”. Use “SPEED UP” or “SPEED DOWN” buttons. Press and hold “ENTER” to save changes. Press “STOP” to return to “P5”. REMOVE SAFETY KEY TO EXIT ENGINEERING MODE REPLACE SAFETY KEY AND PRESS START TO TEST TREADMILL

Press the Stop and the Speed Up keys down while inserting the safety key.
Press the Stop key one time. The Time window should read EP:2P. Some newer models may also say FP, Pass, or the like. This means that it passes the EPROM test.
Press either incline key and the incline will calibrate automatically.
BE CAREFUL, THE TREADMILL WILL RUN AT FULL SPEED IN THIS NEXT MODE! DO NOT STAND ON THE WALKING BELT. Press the Speed Up key and hold it down until 85 is shown in the Distance window (some models may show the 85 number in another window).
If the top speed of the treadmill does not match the displayed speed on the computer console, adjust the max speed potentiometer (pot) on the motor control board. This is the board that the red and black motor wires connect directly into in the motor area. The Max Speed pot is clearly labeled. The max speed potentiometer is a small square with a mobile center and is located in one corner of the board and is labeled MAX SPD. It is near the harness that carries the speed signal labeled H,W,L. Using a small insulated screwdriver adjust this potentiometer clockwise to speed up and counter-clockwise to slow down the max speed of the treadmill. A tiny turn of this potentiometer will make a big difference in speed so be careful when making adjustments. It is not important to get the speed set exactly at the max speed of the treadmill but do make sure to get the speed within .2 MPH of the max speed of the treadmill. For instance if the max speed of the treadmill is 10 MPH, make sure to have the speed set between 9.8 MPH and 10.2 MPH. Some models have a 12 MPH top speed, so please check your manual if you aren’t sure. THIS IS A VERY IMPORTANT STEP BECAUSE YOU WILL GET AN ERROR MESSAGE IF THIS STEP IS SKIPPED. After completing calibration of the speed, press the Speed Down key. The treadmill will automatically return to 0 MPH. Please allow the unit to stop completely before continuing. Press the Stop key once and remove the safety key.

I would check your speed sensor. I've never seen one of these just stop suddenly. But running for a min or so is one of the signs a speed sensor gives you.( especially if the treadmill want speed up while it running) Check this out and if it"s not the problem get as much info as poss to help diag.