Pellet Stove Vacuum Pressure Switch, 3-20-6866

Vacuum Pressure Switch | Pellet Stove | Part 3-20-6866

Brand New – OEM-Style Vacuum Pressure Switch for Pellet Stove Safety Systems

Ensure safe and efficient pellet stove operation with this vacuum pressure switch, part 3-20-6866. This switch monitors airflow and vacuum pressure within the combustion chamber, helping verify proper draft conditions before ignition and during operation. It plays a critical role in preventing unsafe startup or shutdown sequences.

⚙️ Product Features:

• ✅ OEM-style replacement for pellet stove vacuum switches
• ️ Monitors vacuum pressure for ignition and combustion safety
• Standard two-wire configuration
• Durable housing with integrated mounting tabs
• Condition: Brand New – Unused

Replaces Part Numbers:

PS20-6866, 20168, ES2322-1024

✅ Compatibility:

Harman Pellet Stove Absolute 43 Absolute 63 Accentra Accentra 52i Pellet Insert ACC52i Accentra 52i-TC Insert Advance Allure 50 HydroFlex 60 Boiler P35i Insert P38, PP38+ P43 P61 P61A P68 P68-C PB105 Boiler PC45 PF100 Furnace PF120 Furnace XXV. Compatible with select pellet stove models using two-wire vacuum switches. Please verify your stove model and part number before purchase.

Common Fixes:

• ❌ Stove fails to ignite or shuts down unexpectedly
• ⚠️ Combustion fan runs but ignition sequence doesn’t start
• Faulty or stuck pressure switch
• Error codes related to airflow or vacuum detection

️ Installation Tips:

• Disconnect power and allow stove to cool before servicing
• Locate pressure switch near combustion or exhaust fan housing
• Disconnect tubing and wire terminals from old switch
• Install new switch, ensuring secure tubing and wire connections
• ✅ Restore power and test ignition and airflow response

Reliable airflow monitoring. Safe ignition control. OEM-style vacuum pressure switch – part 3-20-6866.