NG Error Detail Codes

Modified on Tue, Mar 4 at 4:10 PM

The table below provides Error Detail information. NG decoders give these Error Details to provide additional context behind the standard "3000" Station Error. This table shows the Error Detail codes, descriptions, possible causes, and how to resolve.

Click here for a simplified list of the most common NLP error codes.

Click here for a full list of all possible NLP error codes.

Error Detail Value	Description	Possible causes	What to do?
1	Active: the output reached an active state despite an error being detected. The output is always turned off after an error is detected.	As described.	No separate action. Refer to other detail bits. This bit is system internal, is internally handled, and should never be set in API responses.
2	Inrush Error, 2-Wire voltage is too low	The internal decoder voltage dropped below 14V during the inrush attempt. A high 2-Wire resistance (long wire run and poor splices along the 2-wire). A low solenoid resistance (damaged solenoid, type with low resistance or more solenoids attached to the output). A high inrush voltage. A long inrush time.	Check the 2-Wire resistance. If it exceeds 45 Ohms roundtrip (equivilent to 1.68 miles of AWG16 2-Wire), then check the wire integrity. Check the solenoid resistance. Solenoids are typically in the range of 20-60 Ohm. If it is less than 20 Ohm, then check if the solenoid is damaged and replace it. If it is due to more in parallel, it is suggested to divide them into more decoders. If this is not doable then the drive parameters can be adjusted to try to make it work. By adjusting the drive parameters, it is NOT recommended to increase the holding voltage. This will not solve the problem. It is the inrush which drains the capacitor and that must be kept to a minimum. Recommendation is to reduce the inrush voltage and/or the time. Most solenoids will work with as low as 10V inrush and 30ms.
4	Hold Error, 2-Wire voltage is too low	The internal decoder voltage dropped too low to guarantee solenoid hold. Other decoder turned on (possibly using force to overrule warnings about too low voltage on the 2-wire). High line resistance unable to supply decoder. Too high hold voltage depleting the internal capacitor.	Lower the number of simultaneous active stations.
8 (264, 520)	Resistance too low / high	The decoder may measure solenoid DC resistance as part of activation. This bit is set if not within 10-100 ohm, or +/-50% of a resistance determined using Autoswitch. Typically reported for shorted or open solenoid. See also Error Detail Value 16 as the same can be reported as high/low inductance.	Check the solenoid resistance. Solenoids are typically in the range of 20-60 Ohm. If it is outside that range, then check if the solenoid is damaged and replace. Parallel solenoids will lower the resistance.
16 (1040, 2064)	Inductance too low / high	The decoder may measure solenoid inductance as part of activation. This bit is set if not within 20-400 mH, or +/-50% of an inductance determined using Autoswitch. Typically reported for shorted or open solenoid. See Error Detail Value 8 as the same can be reported as high/low resistance.	Check the solenoid inductance. Solenoids are typically in the range of 50-200 mH. If it is outside that range, then check if the solenoid is damaged and replace. Parallel solenoids will lower the inductance.
32	Leak too high	The decoder/solenoid connection has a leak to ground.	Check the wire splices and eventually replace.
64	Hold resistance too low / high (only with verify flag)	During hold the solenoid resistance was deemed too low or high.	Check the solenoid resistance. Solenoids are typically in the range of 20-60 Ohm. If it is outside that range, then check if the solenoid is damaged and replace. Parallel solenoids will lower the resistance.
128	Hold test failed, plunger was in passive state (only with verify flag)	With verify ON the decoder checks the plunger position after turning on, and immediately before turning off. This bit is set if the plunger was found in the OFF state, as we expected it to be ON. Plunger stuck. It never moved. Too low inrush voltage. Plunger never seated. Too short inrush. plunger not seated. Too high inrush voltage. The plunger bounced. Bad plunger seating, bad magnetic contact. Too low holding voltage. (Possibly combined with vibrations).	Try increasing the holding voltage by about 0.3V. If that doesn't help, then an investigation of the solenoid/sprinkler is needed. Look for dirt or fertilizers and for any mechanical obstacles which prevents movement of the plunger. Note: increasing the holding voltage has a dramatic impact on the performance of the system. The power consumption from the 2-wire equals the holding voltage in the power of 2. Going from e.g. 2.4 to 5.1 holding voltage will increase the power by 4.5 meaning you can have 4.5 times fewer active decoders.
256 (264)	Resistance too low	See Error Detail Value 8.	Check the solenoid resistance. Solenoids are typically in the range of 20-60 Ohm. If it is outside that range, then check if the solenoid is damaged and replace. Parallel solenoids will lower the resistance.
512 (520)	Resistance too high	See Error Detail Value 8.	Check the solenoid resistance. Solenoids are typically in the range of 20-60 Ohm. If it is outside that range, then check if the solenoid is damaged and replace. Parallel solenoids will lower the resistance.
1024 (1040)	Inductance too low (possible reason is a short)	See Error Detail Value 16.	Check the solenoid inductance. Solenoids are typically in the range of 50-200 mH. If it is outside that range, then check if the solenoid is damaged and replace. Parallel solenoids will lower the inductance.
2048 (2064)	Inductance too high (possible reason is not connected)	See Error Detail Value 16.	Check the solenoid inductance. Solenoids are typically in the range of 50-200 mH. If it is outside that range, then check if the solenoid is damaged and replace. Parallel solenoids will lower the inductance.