Error ER02 – Pressure Switch 20-10 (pre-2016 products)

Description:
Error ER02 occurs on products made before 2016 equipped with a 20-10 pressure switch connected to the combustion chamber. It indicates an anomaly in the management of air/smoke flow or in the ventilation control.

Checks to perform (CAT):

1. Smoke fan setting check
   • Verify if the smoke fan is set to Volts.
   • If so, restore operation to RPM.
2. If the fan is already in RPM:
   • Check for any air intake from the combustion chamber
     • Possible cause: seals not perfectly tight.
   • Check the condition of the flue
     • Possible obstruction or partial clogging.

Operational notes:

• Ensure that all pressure switch connections are intact and properly connected.
• After intervention, perform a complete operation test.