Pro Ox 5900-BT-AIR Installation & Startup Guide
Page 26
www.cleanwaterstore.com
Rev. 02-26-2020
Error 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 powerhead assembly.
Error 5
- Motor overload. This occurs when the motor current is too high. This could be caused
by an issue with the motor itself, but is typically caused by friction in the valve body.
1. 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 regeneration cycle steps to verify that the motor can cycle properly while the powerhead is
disconnected from the valve body. 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 & 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, the motor 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
Pressure Loss from Inadequate Backwash Flow Rate
One problem that may occur is if you do not have enough backwash flow rate to properly clean
the Pro-OX filter media, particularly if you are on well water and have very low flow and
pressure (not usual).
“Flow Rate” is simply how many gallons will flow in one minute, out the drain tubing. If the
system is in a backwash and flowing, if it fills a 5-gallon bucket in one minute, it is “5 GPM”
You can verify the backwash flow rate by running the drain line into a bucket and timing it when
the 5900-BT control is in backwash.
