Boiler shows E09; circulation pump does not start and no flow is detected

Safety first: Turn off power and allow the system to cool. Close isolation valves if present before removing any pump components.

Steps to check:

• Bleed the pump: Locate the bleed screw on the front of the pump (if fitted). Loosen it slightly to release trapped air until water flows steadily, then retighten.
• Free the rotor: With power off, remove the pump motor head or access plug and gently turn the rotor with a screwdriver to ensure it spins freely.
• Check electrical supply: Verify that the pump is receiving power when there is a heat demand (this should be done by a qualified person with a multimeter).
• Inspect capacitor (if applicable): On some Kospel boilers using standard circulators, a failed start capacitor can prevent the pump from running. Replace with the correct value if defective.
• Test operation: Restore power and call for heat. If E09 persists and the pump does not run, replacement is likely required.

When to call a technician: Pump replacement and live electrical testing should be carried out by a heating professional.