Amfa4000 Intermittent Valve Motor Operation

Amfa4000 occasionally makes clicking or grinding noises from the valve head even when not regenerating

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

Control board repeatedly trying to re-home cam, Sticky piston causing partial movement, Failing drive motor gears, Electrical noise causing false motor triggers

How to Fix / Troubleshooting

Safety first: Disconnect power before touching the valve head. Place unit in bypass if you need to disassemble.

  • 1. Observe pattern: Note whether noises occur at regular intervals or randomly. Regular re-homing may indicate sensor issues.
  • 2. Inspect cam and motor: Remove cover and check for worn or missing gear teeth and proper lubrication.
  • 3. Clean and lubricate (if allowed): Lightly clean gear train and apply manufacturer-approved lubricant if specified for the Amfa4000.

Persistent abnormal noises usually indicate impending motor or valve failure; plan for motor or valve head replacement.

Advertisements

Repair Difficulty

Hard 4/5

Required Part

Amfa4000 Valve Drive Motor
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements