TROUBLESHOOT

If replacement parts are required, you can submit a claim here if your sprayer is under warranty.

Scroll down for our series of How-To videos on replacing the various parts of your sprayer with easy-to-follow instructions.

General Troubleshooting

My sprayer is not turning on and there is no sound coming from the pump.
If your sprayer is unresponsive, there are a number of areas that may be the source of the problem. Watch the video below to learn about common issues and the steps required to resolve them.

Tools Required: voltmeter, Phillip's screwdriver, pliers.
STEP 1: Check the battery.
  • Insert a charged, functional battery into the sprayer.
  • If you don't have a spare functional battery, press the indicator button on your battery. If no LED lights appear or if the lights are red, the battery must be replaced.
  • A voltmeter can be used to check the battery in question. Turn your voltmeter to 200V DC. Hold the positive electrode on the positive battery terminal and hold the negative electrode to the negative battery terminal. It should read close to 18V. If there is there is a low or zero reading, the battery must be replaced.
STEP 2: Check the pressure dial/rocker switch.
  • FOR DUAL-PRESSURE UNITS: unscrew the cover plate and set aside. Unscrew the strain relief fitting. Using pliers, disconnect the spade fitting from the power switch and move to the neighboring extra set of wire contacts. Test the sprayer.
  • FOR VARIABLE-PRESSURE UNITS: If the dial rotates continuously, without a stopping point, replace the dial.
STEP 3: Check the microswitch.
  • Locate the microswitch housing (shaped like the letter "P") at the bottom of the pump. Remove the top and bottom screw from the housing to reveal the microswitch.
  • Using pliers, remove the connection that sits the furthest away from the pump. DO NOT PULL ON THE WIRE; squeezing the tab while pulling on the connector will release the pin and it should come off with ease.
  • Insert a battery into the sprayer and turn the power on. Bypass the microswitch by touching the disconnected terminal to the terminal that is still connected to the pump. Note: you may need to pull down the see-through rubber insulators to ensure metal-to-metal connection.
  • If this test causes the pump to turn on, you have a defective microswitch. If this test does not activate the pump and you know your battery to be functional, you likely need a replacement circuit board.
My sprayer continuously turns on and off without the trigger.
Tools Required: Phillip's screwdriver.
STEP 1: Check for leaks from the gun.
STEP 2: Check for leaks from the hose and pump.
  • Unscrew the cover plate and remove. With water in the sprayer, start spraying and look for leaks.
  • If the sprayer is leaking where the hose connects to the pump, tighten the hose clamp.
  • If you notice a leaking from the pump diaphragm, replace the diaphragm/pump.
My sprayer won't shut off; the battery has to be removed to stop it.
STEP 1: For VARIABLE-PRESSURE sprayers -
  • Check if the pressure dial is rotating continuously with no stopping point. If so, the dial and circuit board must be replaced.
  • If the dial is functioning normally, replace the circuit board only.
STEP 2: For DUAL-PRESSURE sprayers -
  • Replace the circuit board.
My sprayer runs constantly without activating the trigger.
Tools Required: Phillip's screwdriver.
STEP 1: Check the trigger for leaks.
STEP 2: Check the adjustment screw.
  • Unscrew the cover plate and set aside.
  • Make an adjustment to the adjustment screw.
My sprayer has little to no pressure when spraying.
Tools Required: Phillip's screwdriver, flat-head screwdriver.
STEP 1: If the sprayer is new or has not been used in a while, back feed water.
  • With the sprayer turned off, remove the spray gun from the hose.
  • Under a faucet, allow water to drip into the hose until you have about three (3) inches of water in the hose.
  • Twist the spray gun back onto the hose and fill the tank with about one (1) gallon of water.
  • Turn the sprayer on and rapidly press and release the trigger.
STEP 2: Check the inlet filter.
  • With the sprayer turned off, unscrew the cover plate and set aside.
  • Loosen the hose clamp and remove the jumper hose attaching the inlet filter to the pump.
  • Holding the inlet filter from inside the tank, turn the inlet filter on the exterior counter clockwise until the two parts of the inlet filter have been disconnected.
  • Check all parts for debris.
STEP 3: Call FlowZone Support at +1 (803) 339-2500 or watch this video to clear the pump of clogs.

Replacing Parts

Replacing the circuit board.
Tools Required: Phillip's head screwdriver, pliers (optional).
  • Taking your screwdriver, unscrew the cover plate and set aside.
  • Unscrew the strain relief fitting.
  • Remove the battery from your sprayer. Unscrew the battery cover, remove it, and set aside. Remove the wires from the remaining battery holster.
  • Using pliers, gently disconnect the circuit board from the pump. The connections should come apart easily when the translucent tab is squeezed, releasing the pin.
  • If you have a DUAL-PRESSURE sprayer, disconnect the circuit board wires from the power toggle switch using the same method. For VARIABLE-PRESSURE sprayers, remove the connector from the pressure dial.
  • Connect the wires from the replacement circuit board to the power toggle switch or the pressure dial.
  • Attach the other end of the replacement circuit board to the pump.
  • Reconnect the wires and connections you removed from the battery holster. Reattach the battery holster, and place a battery in the slot. Test the sprayer. If the sprayer is functional, secure the cover plate back on.
Replacing the microswitch.
Tools Required: Phillip's head screwdriver, pliers (optional).
  • With the battery taken out of your sprayer, take your screwdriver, unscrew the cover plate and set aside.
  • Unscrew the strain relief fitting.
  • Locate the microswitch housing (it looks like the letter "P") at the bottom of the pump. Remove the top and bottom screws from the housing to reveal the microswitch.
  • Using pliers, gently disconnect the spade connectors from the old microswitch. Reattach the connectors to the replacement microswitch.
  • Place the replacement microswitch  into its slot and secure the screws back onto the housing.
  • Insert a battery into the battery compartment and turn your sprayer on. Test the sprayer. If the sprayer is functional, close it up and secure the cover plate.
Replacing the hose.
Tools Required: Phillip's head screwdriver, flat-head screwdriver, hot water.
  • With the battery taken out of your sprayer, take your screwdriver, unscrew the cover plate and set aside.
  • Unscrew the strain relief fitting.
  • Locate the hose clamp near the sprayer pump and using the flat head screwdriver, loosen the clamp.
  • Pry the hose off of the pump connection and slide it out from the cover plate.
  • Take the replacement hose, moving the strain relief gasket if necessary, and insert it through the cover plate. Slide the hose clamp onto the hose.
  • Dip the end of the hose into hot water and wait 5-15 seconds to allow the hose the expand.
  • Bring the end of the hose to the pump connection and slip it on. Slide the hose clamp down until it's over the hose and pump connection. Tighten with the flat-head screwdriver until the clamp is secure.
  • Tighten the strain relief fitting.
  • Fill the tank with some water and place a battery into the battery slot. Turn the sprayer on and test the replacement hose by spraying, being aware of any leaks around the pump and ends of the hose.
  • If the sprayer is functional, replace the cover plate and secure with screws.
Replacing the dual-pressure power switch.
Tools Required: Phillip's head screwdriver, flat-head screwdriver, pliers (optional).
  • With the battery taken out of your sprayer, take your screwdriver, unscrew the cover plate and set aside.
  • Unscrew the strain relief fitting.
  • Taking your fingers or the pliers, gently remove the circuit board connections from the power switch. The connections should come off easily when squeezing the translucent clips.
  • Using a flat-head screwdriver, hold down on the tabs on the power switch and pop it out from the sprayer housing.
  • Carefully, push the replacement pressure switch in its place.
  • Reconnect the red, white, and black wires of the circuit board to the new power switch.
  • Place a battery in the battery slot and turn the sprayer on. Ensure the sprayer operates on both pressure settings by flipping the pressure switch.
  • If the sprayer is functional, replace the cover plate and secure with screws.
Replacing the diaphragm pump.
Tools Required: Phillip's head screwdriver, flat-head screwdriver, hot water, pliers (optional).
  • With the battery taken out of your sprayer, take your screwdriver, unscrew the cover plate and set aside.
  • Unscrew the strain relief fitting.
  • Using your fingers or pliers, disconnect the circuit board connections from the pump. The connections should come off easily when squeezing the translucent clips at the connection.
  • Locate the hose clamps by each side of the pump and taking the flat-head screwdriver, loosen the hose clamps.
  • Gently pry the end of the hose off of the pump connection on both sides.
  • Using the Phillip's head screwdriver, remove the four screws securing the pump to the sprayer tank.
  • Take the replacement pump and connect it to the inlet hose, making sure the hose clamp is on the hose. For easy attachment, dip the end of the hose into hot water for 5-15 seconds to allow the hose to expand.
  • Secure the replacement pump to the sprayer tank by screwing in the four screws.
  • Taking the end of the sprayer hose, attach it to the pump outlet, making sure the hose clamp is on the hose; using the same method as STEP 7.
  • Tighten both hose clamps around the hose and pump.
  • Bring the circuit board connections to the replacement pump and reattach.
  • Tighten the strain relief fitting.
  • Place a battery in the battery slot and turn the sprayer on. Ensure the pump is running.
  • If the sprayer is functional, replace the cover plate and secure with screws.
Replacing the variable-pressure dial.
Tools Required: Phillip's head screwdriver, flat-head screwdriver, hot water, pliers (optional).
  • With the battery taken out of your sprayer, take your screwdriver, unscrew the cover plate and set aside.
  • Unscrew the strain relief fitting.
  • Taking your fingers
  • Locate the hose clamp by the pump and taking the flat-head screwdriver, loosen the hose clamp.
  • Gently pry the end of the hose off of the pump connection.
  • Using your fingers or pliers, disconnect the circuit board connections from the dial. The connections should come off easily when squeezing the translucent clips at the connection.
  • Slide the hose through the new cover plate with the replacement pressure dial and slide the hose clamp onto the hose.
  • Dip the end of the hose into hot water for 5-15 seconds to allow the hose to expand.
  • Bring the end of the hose to the pump connection and slip it on. Slide the hose clamp down until it's over the hose and pump connection. Tighten with the flat-head screwdriver until the clamp is secure.
  • Tighten the strain relief fitting.
  • Bring the circuit board connections to the replacement pressure dial and clip in place.
  • Place a battery in the battery slot and turn the sprayer on. Ensure the sprayer operates on all pressure settings by twisting the pressure dial.
  • If the sprayer is functional, replace the cover plate and secure with screws.
Replacing the battery door cover.
Tools Required: Phillip's head screwdriver.
  • Using the screwdriver, unscrew and remove the bumpers below the battery door.
  • Open the battery door and remove it by holding it upright and pushing down while pulling out.
  • Slide the pin out from the spring and battery door.
  • Place the spring into the slots on the replacement battery door. Slide the pin through the spring and replacement battery door.
  • Place the battery door over the battery slot and snap it back into place by pressing down.
  • Push the spring hinge under and behind the green hinge.
  • Close the battery door and clip in place.
  • Place the bumpers back into their slots and secure.