Reznor 208973 Oil Primary Control for Waste Oil Heaters

The Reznor 208973 is a genuine OEM oil primary control module designed specifically for Reznor waste oil heaters and burners. This control is manufactured by Carlin Combustion Technology and is also identified by Carlin part number 42230 or 4223002S.

Key Features:

• Interrupted duty ignition with 30-second trial for ignition (TFI)
• CAD cell flame sensing technology with 1.3-second flame failure response time
• Recycle on flame failure for reliable operation
• Diagnostic LED indicators for status, lockout, and flame monitoring
• Serviceman reset protection with latch-up after 3 consecutive lockouts
• Oil pump bleed assist function (up to 1 minute)
• SMC (Safety Monitoring Circuit) technology with zero bleed voltage during standby
• Compatible with both thermostat and aquastat controls
• Works reliably with generators (insensitive to frequency changes)

Electrical Specifications:

• Power Input: 120 VAC, 60 Hz, 10 VA
• Motor Load: 10 FLA / 60 LRA
• Ignitor Load: 120 VAC, 60 Hz, 500 VA
• Operating Temperature Range: +32°F to +140°F
• Thermostat Anticipator Current: 0.2A AC

This primary control mounts directly on top of standard flame retention oil burners and provides essential safety monitoring and ignition control for oil-fired heating systems. The advanced microprocessor technology ensures accurate flame detection and reliable operation while optimizing combustion efficiency.