Electric Reactor E24 Error

My Reactor is showing an E24 on the display. How do I fix it?

E24 Symptoms

When the pump zone is turned on and without touching the spray gun you get an E24 within 5 – 10 seconds.

When the pump zone is turned on the pressures are balanced and as soon as you pull the trigger on the gun you get an E24.

When the pump zone is turned on the pressures are balanced and you start spraying and you slowly get a pressure imbalance and then eventually the pressures get far enough apart that you get the E24.

E24 Causes

  • One side of the Gun is plugged.
  • Plugged gun manifold.
  • One of the y-strainer screens is plugged.
  • One of the feed pump air pressures is set incorrectly.
  • One of the feed pumps has failed.
  • One dump valve is leaking or in bypass.
  • Plugged or kinked feed or spray hose.
  • One of the pressure transducers has failed.
  • The main pump is plugged or damaged.
  • The pre-heater is plugged.
  • Bottom of the drum is damaged causing a blockage to the inlet of the feed pump.

E24 Solution

When you get a E24 error, check and see what your analog gauges are reading.

Try clearing the error and balancing the pressures using the dump valves.

If you are able to balance the pressures

Try running the unit, if you get a E24 error code again, and your analog gauges are not reading an equal pressure.

Check and clean the gun inlet screens and check valves.

Check and clean the gun side block seals and housings.

Check and clean the gun main fluid housing.

Check and clean the mix chamber A & B impingement ports a well as the nozzle port.

If you cannot get the pressures to balance

Check to see if one of the pumps has failed.

Check and see if you ran out of material.

Check and see if you have a plugged fluid path by using the feed pump to push fluid out through the gun manifold.

Try clearing the error and running the unit.

If you get the error code E24 again and your analog gauges are very close in pressure. Check plug J10 (E20/E-XP1) or J7 (E30/E-XP2) or the jumpers 7 to 8, or 9 to 10 on the motor control board. If the jumpers and the wiring are in good working condition and you still have the error, one of the pressure transducers may have failed.

Test the pressure transducers

The digital display on a Reactor always shows the higher of the two pressures. As soon as the higher analog pressure drops below the lower analog pressure the digital display will switch to the new highest reading. Knowing this, the following tests should show which pressure transducer has failed.

For testing purposes only – Find the dip switches on the motor control board, and set dip switch 3 to off. This will allow the Reactor to run with a pressure imbalance alarm. Be sure to turn the dip switch back on after testing.

Run the unit to build up some pressure. Shut down the unit, clear the alarm and power back up, but don’t depressurize the unit.

Check the analog gauges to see which pressure is higher. And then check and see if the display pressure matches.

If it does, that would indicate that the motor control board is “Seeing” that transducer.

If not, then that would indicate that the motor control board is not “seeing” that transducer. Check the wire connections and or replace the transducer.

With the pump zone off, use the dump valves to slowly relieve the “high” side pressure, while watching the digital display and the analog gauges. Once the higher analog gauge drops below the lower analog pressure the motor control board should start reading the “new” high side pressure (because it is now the higher of the two). Continue dropping the original “high” side pressure couple hundred PSI. (The digital display should stop dropping). And repeat the process to check the other pressure transducer.