Frequently Asked Questions
and Troubleshooting

Frequently Asked Questions
Please Click on the question below to see the answer to the question

• Question: Why is a sound coming from the toilet when not in use?

  The valve has detected a leak! The sound is the leak detection system telling you that your FLAPPER needs to be replaced.

  a. To check the tank for a leak, flush the toilet.
  b. After the tank is done filling, apply the float lock to the valve so that the valve is in the "off" position.
  c. Mark the water line with a pencil.
  d. Do not use the toilet for about a half hour.
  e. If the water has dropped below the pencil mark, then your flapper is leaking.
  f. Replace the flapper.

  
• Question: Why is there a sound coming from the tank when the toilet is first flushed?

  This is normal operation. The HydroClean makes a distinct sound when it is refilling the tank because the jets first push air out of the valve then jets water to lift up all of the debris that may settle on the bottom of the tank. The jets also clean the inside of the tank, prolonging the life of the components.
  
  This same sound is designed to alert you that there is a leak in the toilet. If you hear this noise when the toilet is not being flushed, see the previous FAQ.

  
• Question: Can I install the valve without the J-tube?

  Absolutely. Athough you will lose about 80% of the cleaning, you will still have leak detection and the valve will function properly.

  
• Question: How do I flush/clean out the valve?

  Under normal operation, the valve does not need to be cleaned out. The HydroClean is designed to have larger ports to allow virtually all debris to exit the valve.

  

Troubleshooting

• Issue A: Valve does not refill the tank

  Check the float to make sure it travels freely up and down and is not binding on side walls.
  
  If it does not freely move up or down and is not binding on side walls:
  1. Check the Float Lock

  a. See if the float lock is holding up the float.
  b. Float lock should be locked in approximately 1/2” away from the Float Screw during normal operations.
  
  

  2. If it isn't, make sure water is going through the supply line:

  a. Turn water off where it comes out of the wall.
  b. Unscrew the supply line from the base of the toilet tank.
  c. Put the open end of the supply line in a bucket or container.
  d. Turn the water back on slowly.
  e. The water should have strong flow. If not, please call a plumber, because the problem could be in the shut off valve or the supply line.
  
  

  3. If water flows:

  a. Reconnect the supply line to the base of the toilet.
  b. Turn the cap of the valve counter clockwise to remove it.
  c. Check the seal on the cap for debris or damage.
  d. If there is debris remove it. If the seal has been damaged, replace the seal.
  
  

  4. If there is no debris or damage:

  a. Place a cup or container over the top of the valve.
  b. Turn on the water very slowly. Water should flow through the valve.
  c. If the valve is plugged with large debris and sediment, this should remove the buildup.
  d. Turn water off.
  
  

  5. When finished:

  a. Reattach the cap.
  b. Slowly turn the water back on.
  c. Test the toilet to see if the problem has been fixed.

  
• Issue B: Tank fills too much or only partially

  1. Adjust the float to the proper height.

  a. Turn water off to the toilet at the wall.
  b. Turn the valve clockwise until you hear a click.
  c. Raise or lower the valve so that the center of float is approximately at the fill line inside of the toilet.
  d. Turn the valve counter clockwise to lock it back into place.
  e. Turn the water back on.
  f. Small corrections to water height can be made by turning the thumbscrew. Counter clockwise to lower the level, clockwise to raise the level (do not go past the threaded stop).

  
• Issue C: Valve doesn't shut off after filling

  1. Is the water flowing over the over flow tube?

  If yes, the fill valve is adjusted too high. (See Issue B)
  
  

  2. Flapper could be leaking so fast that the fill valve cannot keep up.

  a. Shut water off at the shut off valve or by applying the Float Lock. If the water level drops, the flapper is the problem.
  
  

  3. Make sure the float moves freely up or down and does not bind or hit the side walls of the tank.
  
  

  4. Check the height of the float compared to the fill line inside the tank:

  a. If the height is incorrect, turn the water off where it comes out of the wall.
  b. Turn the valve clockwise until you hear a click.
  c. Adjust the float to the fill line inside of the toilet.
  d. Turn the valve counter clockwise to lock it back into place
  e. Turn the water back on.
  f. Small corrections to water height can be made by turning the thumbscrew. Counter clockwise to raise the level, clockwise to lower the level.
  
  

  5. Check the float lock:

  a. Float lock should be locked in approximately 1/2" away from Float Screw
  
  

  6. If the float lock is functioning properly:

  a. Turn water off,
  b. Turn the cap of the valve counter clockwise to remove it.
  c. Check the seal on the cap for debris or damage.
  d. If there is debris remove it. If the seal has been damaged, replace the seal.
  
  

  7. If there is no debris or damage:

  a. Place a cup or container over the top of the valve.
  b. Turn on the water very slowly. Water should flow through the valve.
  c. If the valve is plugged with sediment, this should remove the buildup.
  d. Turn the water off.
  
  

  
• Issue D: Water is flowing from the cap

  1. If there is only a minor drip, this is normal operation. All pilot valves are designed to weep during operation and will stop after the valve turns off. This does not waste water and is normal.

  2. If it's more than just a drip, check the seal.

  a. Shut the water off under the toilet tank
  b. Turn the cap of the valve counter clockwise to remove it.
  c. Check the seal on the cap for debris or damage.
  d. If there is debris, remove it. If the seal has been damaged, replace the seal.
  
  

  
• Issue E: Valve sticks above the tank after install

  1. Adjust the float to the proper height.

  a. Turn the water off to the toilet at the wall.
  b. Turn the valve clockwise until you hear a click.
  c. Adjust the float to the fill line inside of the toilet.
  d. Turn the valve counter clockwise to lock it back into place.
  e. Small corrections to water height can be made by turning the thumbscrew. Counter clockwise to lower the level, clockwise to raise the level.
  f. Turn the water back on.
  
  

  
• Issue F: No water is coming from the J-Tube

  1. J-Tube is blocked with excess glue. Call MJSI to receive a replacement J-Tube.

  
• Issue G: J-tube will not fit in the toilet

  1. The HydroClean needs to be rotated

  a. Shut off the water at the wall.
  b. Flush as much water down the drain as you can, then soak up the rest of the water in the tank with a sponge or a rag.
  c. Disconnect the supply line at the base of the toilet.
  d. Loosen the HydroClean Smart Nut.
  e. Rotate the HydroClean so that the J-Tube nozzle is pointed towards the far end of the tank.
  f. Retighten the Smart Nut.
  g. Reconnect the supply line.
  h. Turn the water back on.
  
  

  2. If rotating the HydroClean is not the issue:

  a. Some toilets are not compatible with the J-Tube because of large or improperly installed tank components. We recommend the HydroClean 550 (without the J-Tube) instead, but the HydroClean 660 can still be used without the J-Tube (Still provides leak detection and 20% of the cleaning)
  
  

  
• Issue H: Toilet bowl does not fill completely, causing improper flush

  1. The HydroClean is miscalibrated:

  a. Refer to installation directions #17-19.
  
  

  If this does not help or you need additional assistance, please see our installation video on this website or call 1-888-GOMJSI-1, x118.