F4
Salter Mode Button / Keypad Fault

Cordless vacuum shows F4 and power modes cannot be changed; stuck on one suction level.

Advertisements

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.

Advertisements

Possible Causes

Stuck or damaged mode button, Contamination under keypad, Faulty button PCB, Broken ribbon cable between keypad and main PCB

How to Fix / Troubleshooting

Safety first: Remove the battery pack before working near the controls.

Free the button:

  • Press the mode button repeatedly to see if it frees up. Sometimes dust can cause it to stick.
  • Wipe around the button with a slightly damp cloth to remove grime. Do not allow liquid to enter the housing.

Internal inspection (if out of warranty):

  • Remove the screws securing the handle/control panel.
  • Lift the panel carefully and inspect the small PCB and ribbon cable for damage.
  • Clean any dust from the button contacts with isopropyl alcohol and a cotton bud.

If the button still does not register and F4 remains, replace the control keypad PCB or the entire handle assembly.

Advertisements

Repair Difficulty

Hard 4/5

Required Part

Control Keypad PCB
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements