Verify the wheel RPM's are in range. Ensure that the head float is not filled with water. Try running the cleaner without the bag and if it fixes the issue then clean the bag with soap and warm water. This will remove any biofilm/oils that may have accumulated in the bag.

1. Check filter bag, if full it can weigh the cleaner down on one side.

2. Remove the head float and shake it. If there is water in the float, order a new one.

3. Check the hose floats to make sure they are spaced evenly.

1. Check the hose length reaches within 6" of the farthest point of the pool. If not, order a new hose section from your cleaner dealer.

2. Check thrust jet for 11:00 position that optimizes random turning.

3. While the cleaner is operating, hold it upside down and look into the vacuum tube. There should be three distinct, even jets of water. If there are not, contact Customer Service or a Polaris authorized Service Center for assistance.

1. Adjust the speed of the sweep hose by tightening the adjustment screw.

2. Replace the sweep hose scrubber if it is worn or missing.

3. Add a sweep hose weight (order part #B2) to keep the sweep hose from spraying.

1. Make sure the opening at the end of the sweep hose is not blocked by the sweep hose scrubber.

2. Adjust the sweep hose to a gentle sweeping motion.

Check swivels and make sure they are spinning freely. Lay the hose out in the sun for 24 hours to eliminate any potential hose memory.

1. Adjust the thrust jet.

2. Make sure feed hose is floating.

1. Check the filter screen in the in-line filter and clean, if necessary.

2. Clean the skimmer basket, pump basket, and pool filter.

3. Check all of the hoses, connections, and swivels for leaks that could cause loss of water pressure.

4. Check the wheel RPM.

1. Confirm that the blue restrictor disk is installed in the UWF® to decrease water flow. Or, install the red restrictor disk to decrease water flow even more.

2. Check the wheel RPM. If more than 32 RPM, unscrew the pressure relief valve to decrease water flow to cleaner. Note: The pressure relief valve should only be adjusted when a restrictor disk is installed.

3. Verify the back-up valve is cycling. Hold the valve out of the water and watch the jet. It should come on and go off.

Hold the back up valve out of the water and verify that it cycles on and off. A complete cycle takes about three minutes. If it stays on all the time or doesn't come on at all then replace the back up valve.

Verify that the wheel RPM's are in the correct range and adjust the thrust jet. If the cleaner isn't climbing well then ensure the thrust jet is in the 11 o'clock position. If it is going in circles then angle the thrust jet so it is pointing opposite of the way the cleaner is turning. For example, if the cleaner is turning right then point the thrust jet to the left.

There is too much cable length in the water. Do not unravel the entire cable length. Place only the required length of cable in the water and place the rest on the side of the pool. Follow the procedure in "Cord Tangling" in the manual to avoid and correct tangled cord.

1. Check the canister again to make sure that the mesh screen is not clogged by fine debris. Spray the canister with water if necessary.

2. Check the flow outlet screen and remove any debris that may block flow. If the problem persists, contact our Technical Support team at 800-822-7933.

1. The filter canister is full or dirty. Clean the filter canister, see "Cleaning the Filter Canister" in manual.

2. Sides of pool are slippery or slimy. Although the water seems clear, microscopic algae, invisible to the human eye, are present in the pool. As a result the pool sides become slippery and prevent the cleaner from climbing. Check tires for wear and replace as necessary. Do a shock chlorination treatment and slightly reduce the pH. DO NOT leave the cleaner in the pool during this treatment.

1. The brushes have become smooth or the "wear" indicator shows. Replace the brushes following the procedure in "Replacing the Brushes" in the manual.

2. Filter canister is full or dirty. Clean the filter canister following the procedure in "Cleaning the Filter Canister" in the manual.

3. Make sure the floating cable is spread out over the pool. Ensure the cable is not too tightly wrapped or coiled when storing. If the problem persists, lay the cable straight in the sun to relax it and remove kinks.

1. The dirty filter canister lights up when the canister is full or partially clogged. Turn off the cleaner, empty debris, and spray canister to clear fine debris from canister.

2. The control unit will reset itself when the dirty canister is replaced with a clean one. Press start/stop button to make sure that the indicator light is off.

1. Unplug floating cable from the control unit and reconnect.

2. Remove cleaner from the pool and re-submerge, see "Submerging the Cleaner" in the manual.

3. Propellor or wheels may be jammed and not turning correctly. Contact Polaris Technical Support at (USA) 1-800-822-7933.

Cleaner may be sucking air (lights will appear after 60 seconds air intake). Remove cleaner from the pool and re-submerge, see "Submerging the Cleaner" in the manual.

1. The outlet, the control unit is connected to, is not supplying electrical power. Check that the outlet to which the control unit is connected is receiving electricity.

2. Check that you have started one (1) of the two (2) programs and check that the indicator for the selected program is lit. If the indicator light is not lit, turn the wheels then disconnect the control unit and wait at least 20 seconds before reconnecting. If the problem persists, contact Polaris Technical Support at (USA) 1-800-822-7933.

Your cleaner will continue to operate with the light on, but it may not clean effectively. If the canister is completely clogged, the cleaner may shut down, resulting in Error 4 on control unit.

1. Unplug floating cable from the control unit and reconnect.

2. Remove cleaner from the pool and re-submerge, see Submerging the Cleaner section of the Owner's Manual.

3. Press power button OFF, then Floor/Wall setting button to begin a new cycle.

4. Contact Polaris Technical Support at 1-800-822-7933 (USA); 1-888-647-4004 (Canada).

1. Remove cleaner from the pool and re-submerge, see the Submerging the Cleaner section in the Owner's manual.

2. Clean the filter canister, see Cleaning the Filter Canister in the Owner's Manual.

3. Contact Polaris Technical Support at 1-800-822-7933 (USA); 1-888-647-4004 (Canada).

1. Clean the filter canister, see Cleaning the Filter Canister in the Owner's Manual.

2. Adjust Surface Control System™ setting, see the Wall Cleaning section in the Owner's Manual.

3. Do a shock chlorination treatment to reduce the pH levels in the pool. DO NOT leave the cleaner in the pool during this treatment.

Remove cleaner from the pool and re-submerge, see the Submerging the Cleaner section in the Owner's Manual.

1. Check that the outlet to which the control unit is connected is receiving electricity.

2. Disconnect the control unit and wait at least 20 seconds before reconnecting. If the problem persists, contact Polaris Technical Support at 1-800-822-7933 (USA)

No user action required. The pause does not affect the overall cleaning cycle.

1. Bright sunlight: Shield the lights to block sunlight and re-check if the lights are lit.

2. Control box is unplugged: Plug the control box into a GFCI outlet. (See: Connect to a Power Source).

3. Power outage: Verify that the breaker is on and electricity is being supplied to the outlet.

4. Lost internet connection: Check internet connection - Network may be down.

Lost internet connection: Check internet connection - Network may be down.

1. Control box is too far from home router: Relocate the control box as near to the home router as practical. (See: Install and Submerge the Cleaner) Do not use an extension cord.

2. Weak Wi-Fi signal: Check for adequate Wi-Fi signal strength. With a Windows laptop, go to Network Connections in the Control Panel. Check Signal Strength meter under Wireless Network Connection icon while standing near the control box. With a smart device, search for, download, and use an app that can check signal strength while standing near the control box. If Wi-Fi signal is weak, consider installing a Wi-Fi extender.

Connectivity issue with local Wi-Fi or connection to the server: Contact your local internet service provider.

1. Unplug your control box and wait 10 seconds. Plug in the box again and see if lights illuminate.

2. Check Internet connection - Network may be down.

Antenna firmware update in progress: Flashing may continue up to ten minutes until update is complete.

There is too much cable length in the water. Do not unravel the entire cable length. Place only the required length of cable in the water and place the rest on the side of the pool. Follow the procedure in "Cord Tangling" in the manual to avoid and correct tangled cord.

1. Check the canister again to make sure that the mesh screen is not clogged by fine debris. Spray the canister with water if necessary.

2. Check the flow outlet screen and remove any debris that may block flow. If the problem persists, contact our Technical Support team at 800-822-7933.

1. The filter canister is full or dirty. Clean the filter canister, see "Cleaning the Filter Canister" in manual.

2. Sides of pool are slippery or slimy. Although the water seems clear, microscopic algae, invisible to the human eye, are present in the pool. As a result the pool sides become slippery and prevent the cleaner from climbing. Check tires for wear and replace as necessary. Do a shock chlorination treatment and slightly reduce the pH. DO NOT leave the cleaner in the pool during this treatment.

1. There is air in the appliance casing. Submerge the cleaner following the procedure in "Submerging the Cleaner" in the manual.

2. The filter canister is full or dirty. Clean the filter canister, see "Cleaning the Filter Canister" in manual.

1. The brushes have become smooth or the "wear" indicator shows. Replace the brushes following the procedure in "Replacing the Brushes" in the manual.

2. Filter canister is full or dirty. Clean the filter canister following the procedure in "Cleaning the Filter Canister" in the manual.

3. Make sure the floating cable is spread out over the pool. Ensure the cable is not too tightly wrapped or coiled when storing. If the problem persists, lay the cable straight in the sun to relax it and remove kinks.

1. The dirty filter canister lights up when the canister is full or partially clogged. Turn off the cleaner, empty debris, and spray canister to clear fine debris from canister.

2. The control unit will reset itself when the dirty canister is replaced with a clean one. Press start/stop button to make sure that the indicator light is off.

1. The outlet, the control unit is connected to, is not supplying electrical power. Check that the outlet to which the control unit is connected is receiving electricity.

2. Check that you have started one (1) of the two (2) programs and check that the indicator for the selected program is lit. If the indicator light is not lit, turn the wheels then disconnect the control unit and wait at least 20 seconds before reconnecting. If the problem persists, contact Polaris Technical Support at (USA) 1-800-822-7933.

Your cleaner will continue to operate with the light on, but it may not clean effectively. If the canister is completely clogged, the cleaner may shut down, resulting in Error 4 on control unit.

1. Check the wheel RPM. Target wheel speed is 28-32 RPM. If wheel speed is not in target range, refer to Section 7 Adjust Wheel Speed.

2. Check for debris in the filter canister and clean, if necessary.

3. Ensure the hose is floating and the hose floats are positioned properly. Position the first float (k) up against the feed hose connector (j) and then space hose floats 1-3 ft (30-90 cm) apart.

4. Adjust the thrust jet. Refer to Section 8 Fine Tuning in the manual.

5. Remove unnecessary pool hardware or install a Ladder Guard Kit (part # G21) from a Polaris® dealer.

6. Install a Back-Up Valve accessory (part # G62, black or part # G52, white) from a Polaris dealer. Additional hose nuts and swivel may be required. Position the back-up valve and its adjacent hose float 6-8 ft (1.8 - 2.4m) away from the cleaner.

Check the thrust jet position and adjust thrust jet flow, if necessary. Refer to Section 8 Fine Tuning in the manual.

1. Ensure the hose length is adjusted to the proper length for the pool shape. Refer to Section 3 Adjust Hose Length in the manual.

2. Adjust the thrust jet to improve coverage. Refer to Section 8 Fine Tuning in the manual.

1. Check the wheel RPM. Target wheel speed is 28-32 RPM. If wheel speed is not in target range, refer to Section 7 Adjust Wheel Speed in the manual.

2. Check for debris in the filter canister and clean, if necessary.

3. Check the filter screen and the in-line filter and clean, if necessary.

4. Clean the skimmer basket, pump basket, and pool filter.

5. Check all of the hoses, connections, and swivels for leaks that could cause loss of water pressure.

1. Check the wheel RPM. Target wheel speed is 28-32 RPM. If wheel speed is not in target range, refer to Section 7 Adjust Wheel Speed.

2. Ensure the hose is floating and the hose floats are positioned properly. Position the first float (k) up against the feed hose connector (j) and then space hose floats 1-3 ft (30-90 cm) apart.

3. Check for debris in the filter canister and clean, if necessary.

4. Adjust the thrust jet. Refer to Section 8 Fine Tuning in the manual.

5. For smooth surface pools (tile, fiberglass, etc.), replace both rear tires with PosiTrax® tires for more traction (available from a Polaris® dealer).

Replace both rear tires with PosiTrax tires for more traction (available from a Polaris dealer).

1. Unplug floating cable from the control unit and reconnect.

2. Remove cleaner from the pool and re-submerge, see Install and Submerge the Cleaner in the Owner's Manual.

3. Contact your local retailer to request a diagnostic review or call Polaris Technical Support

1. Check that the outlet to which the control unit is connected is receiving electricity.

2. Turn the tracks and check underneath the tracks for trapped debris in the wheels then disconnect the control unit and wait at least 20 seconds before reconnecting. If the problem persists, contact your local retailer to request a diagnostic review or call Polaris Technical Support.

1. Clean the filter canister, see Cleaning the Filter Canister in the Owner's Manual.

2. Do a shock chlorination treatment to reduce the pH levels in the pool. DO NOT leave the cleaner in the pool during this treatment.

Check the Owner's Manual in the Troubleshooting section for more information.

1. Verify that the pressure relief valve is releasing water. If it is not, clean or backwash the pool filter.

2. Check the filter screen in the Quick Disconnect and clean if necessary.

3. Check that the eyeball regulators are installed in all of the return lines.

4. Verify that the float hose is the proper length.

5. Remove the surface module top. With the Polaris operating, verify that the randomizer tube is moving back and forth.

   1. If the randomizer tube is not moving: Turn off pump, disconnect hoses, look into the mechanism and locate the filter connector inside the randomizer tube. If it is covered with debris or algae, remove the connector chamber, cylinder, and piston. Pull out the randomizer tube and clean the filter connector. If the connector is clean, replace the piston.

   2. If the randomizer tube is moving: Watch the randomizer ball in the mechanism. If it does not move within 2 minutes, replace the randomizer tube and piston.

6. Verify that the water pressure is between 5 and 10 psi. A pressure tester (part #6-113-00) is available through your participating Polaris dealer.

1. Straighten twisted hoses.

2. Lift surface module out of the water, empty it and then shake it. If water is still heard inside, remove the top, pull out the drain plug assembly and drain the module.

3. Adjust the pressure relief valve until the surface module levels off.

4. Verify that the water pressure is between 5 and 10 psi. A pressure tester (part #6-113-00) is available from an authorized Polaris dealer.

1. Adjust the pressure relief valve until the surface module slows down.

2. Remove one of the eyeball regulators and readjust the pressure relief valve if necessary.

3. Verify that the water pressure is between 5 and 10 psi.

1. Lay the float hose out straight in the sun to remove the coils.

2. Check the float hose length.