Err 9
Fleck
Internal Sensor / Configuration Fault
Display shows “Err 9” and the system indicates an internal sensor or configuration fault.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Unsupported configuration selected, internal sensor failure on advanced XTR controls, firmware corruption, incompatible accessory connected
How to Fix / Troubleshooting
Safety first: Disconnect power before changing wiring or accessories.
- Remove new accessories: If a remote display, relay, or sensor was recently added, disconnect it and see if the error clears.
- Verify configuration: In installer mode, confirm that the valve type, meter type, and accessory options match the actual hardware.
- Update or reset firmware (if supported): Some advanced Fleck controls allow firmware updates via service tools; otherwise perform a factory reset.
- Replace control: If Err 9 persists with correct configuration and no accessories, replace the control board.
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Repair Difficulty
Medium
3/5
Required Part
Fleck XTR Control Board
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