Pump will not run, no spray from wand, E4 displayed (pump protection / dry-run)

Safety: Unplug the machine and avoid running the pump dry for long periods.

• Check solution tank level:
  • Remove the clean solution tank from the Henry carpet cleaner.
  • Fill with warm water and appropriate carpet detergent to the marked level.
• Inspect solution intake filter:
  • Locate the small mesh filter at the bottom or outlet of the solution tank.
  • Rinse under warm water to remove detergent residue and debris.
• Bleed air from solution line:
  • Refit the tank securely, ensuring the outlet valve engages properly with the base.
  • With the machine on (if safe), hold the wand low and press the solution trigger continuously for 30–60 seconds to purge air.
• Check for kinks or pinched hoses:
  • Trace the clear solution hose from tank to pump and from pump to wand.
  • Straighten any kinks and ensure quick-connect fittings are fully seated.
• If pump still silent and E4 remains:
  • With power off, access the pump compartment.
  • Check electrical connectors to the solution pump.
  • If the pump receives power but does not run, replace the solution pump assembly.