Tech Self Help Articles » Gen 1.3 - Troubleshooting » Gen 1.3: Troubleshooting ERR2

Gen 1.3: Troubleshooting ERR2

What is ERR2?

ERR2 is displayed when the flow meter returns a value of zero after a MIST cycle.

Most Common Cause:  flow meter clog or failure

Other Potential Causes:

  • Pump failure or clogged intake filter
  • Flow rate of the nozzle circuit is too low to register.  (Nozzle count may be less than 20)
  • Frozen fluid in nozzle circuit
  • Agitation valve not opening
  • Auto Drain Valve (inside drum) is unattached
  • Failed motor or controller


Troubleshooting Steps:

Confirm the nozzle count is 20 or more.

  • If not, the flow rate is too low for the flow meter to reliably read.  Unplug the flow meter from the back of the controller and cycle the power.

Run a remote or manual mist.  If the nozzles are misting, the flow meter is clogged or has failed.

  • Remove and clean the flow meter then retest by running a mist to completion.
  • If the result is ERR2, replace the flow meter.  If you do not have a replacement flow meter on hand, you can enable the system to run without it by unplugging it from the back of the controller and cycling the power.

If the nozzles are not misting, the problem is not with the flow meter.

Run a remote or manual mist and listen for the motor to start and agitation valve to click.  Also observe the pressure gauge at the unit.

If you hear the motor start AND the agitation valve click AND the pressure gauge reads 40 psi:

  • The most likely cause is that the auto drain valve inside the drum is not connected to the 1/4″ tubing inside the drum and is not restricting flow as it should
  • Reconnect the auto drain valve,  If you can’t find it, you can also use a nozzle.

If you hear the motor start AND the agitation valve click BUT the pressure gauge reads 0 psi or very low:

  • The pump is not working.  The likely causes are that the pump has failed or the pump intake is not securely sealed or the intake filter is clogged.
  • Check/clear the pump intake and retest.
  • If still 0 or very low pressure, replace the pump

If you hear the motor start AND the pressure is around 40 psi BUT you do not hear the agitation valve click:

  • The likely causes for the valve not opening are insufficient voltage at the outlet, or the valve has failed mechanically.
  • Use voltmeter to test voltage at the outlet.  If voltage is less than 120V, consult an electrician.
  • If no voltmeter is available, disconnect only the motor from the back of the controller and run an inspection cycle.  Allow the controller to count down for a few seconds as the valve opens (you will hear a loud snap), then plug the motor back into the controller. The unit should immediately begin misting.  If it does, the unit does not have enough voltage to open the valve and you should consult an electrician.
  • If voltage is OK, replace the agitation valve.

If you do not hear the motor start:

  • The likely causes are that the motor has failed or a relay on the controller has failed.
  • Replace the motor and retest.