Nelsen Corporation AIO Plus Connected Series Installation & Operation Manual
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17Control Valve Error Code DiagnosisUnder normal operating conditions, when the control valve is in the “in service” position, the display should alternatebetween the current time of day and the number of days remaining (for filters and time clock softeners) or gallons re-maining (for metered softeners) until the next regeneration. This is the “home display.” If the valve is currently goingthrough a regeneration cycle, the display will show the cycle step on the left side of the display and the number ofminutes remaining in that step on the right side of the display. If any other information is being displayed, then thevalve is informing you of an issue. There are five error codes which could indicate an issue with the control valve.When an error is being displayed, the valve will be in a stopped position, and the buttons will not respond to beingpressed. Even if the cause of the error code is corrected, the error code will not clear until the power supply hasbeen disconnected and reconnected (this will be referred to as “cycling” the power). All error codes are displayed asthe letters “Err” followed by a flashing number 2-6:Error 2 - Valve is searching for homing slot. - Allow valve to continue running. If the homing slot is found, the valvewill return to the home display, otherwise, another error code will appear.Error 3 - No encoder slots are being seen. - This occurs when the motor is running, but the encoder is not seeing anyof the slots in the encoder wheel. This can happen if the encoder has been disconnected, but most commonly occurswhen debris in the valve body has stopped the piston, causing the encoder wheel to be unable to turn.1. Check encoder connection. If the encoder is plugged in and snapped into place, skip to step #2 below. Ifencoder is disconnected, reconnect it and cycle power to clear the error.2. Disconnect powerhead from valve body, cycle power to clear the error code. Manually cycle the powerheadthrough the regeneration cycle steps to verify that the motor can cycle properly while the powerhead isdisconnected from the valve body. If the error 3 does not reappear, skip to step #3 below. If the error 3 doesreappear, order a board & motor kit to replace the circuit board & motor.3. Remove piston and seals from the valve body and inspect valve body for debris. Replace the seal & spacer kit.Inspect piston and replace piston if Teflon coating is wornError 4 - Unable to find homing slot.1. Check encoder wheel for debris.2. Cycle power. Valve should either find home or go to a different error code. If error 4 returns, replace powerheadassembly.Error 5 - Motor overload. - This occurs when the motor current is too high. This could be caused by an issue with themotor itself, but is typically caused by friction in the valve body1. Disconnect powerhead from valve body and cycle power to clear the error code.2. If the error 5 returns, replace the motor. Otherwise, manually cycle the powerhead through the regenerationcycle steps to verify that the motor can cycle properly while the powerhead is disconnected from the valvebody. Either way, proceed to the next step.3. Remove piston and seals from the valve body and inspect valve body for debris. Replace the seal and spacer kit.Inspect piston and replace piston if Teflon coating is worn.Error 6 - No motor current. - This typically occurs if the motor cable has come unplugged from the circuit board.Check that the motor cable is plugged into the circuit board and attached to the motor. If this is not the issue, themotor or circuit board may need to be re-placed.No Display - If your display is blank, there is no power going to the circuit board due to one of the following factors:• The electrical outlet is not powered or is switched off.• The power cable has come unplugged from the circuit board.• The power supply has come unplugged from your electrical outlet.• The power supply has come unplugged from the control valve.• The power supply is not working.AIO Plus Connected Series Error Codes |
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