Rheem-Ruud 470015 Limit Switch

When you're troubleshooting a nuisance trip or a 3-flash error code on a Rheem-Ruud gas electric package unit, verifying the thermal limits is step one. The Rheem-Ruud 470015 Limit Switch (TOD 44T Series) is a high-precision, flanged airstream control calibrated for tight tolerances. This SPST normally closed switch is engineered to open the circuit at a 120 degrees F fixed open temperature and automatically reset once the plenum cools to a 100 degrees F fixed close temperature. Classified as a moisture resistant/low load limit switch, it features an enclosed disc face and a yellow color code for immediate field identification.

Designed for low-voltage safety circuits, this switch supports a 26VAC maximum rating at 1A current. For veterans working on RRKA, RRMA, and RRNA-A series equipment, this OEM component ensures the 3/8-inch flanged mounting matches the factory airstream insertion depth. Whether you are dealing with restricted airflow issues or a failing thermal disc, utilizing a genuine Rheem furnace replacement part maintains the specific safety parameters required for HVAC temperature regulation without the drift associated with generic alternatives.

• Automatic Reset Functionality: Eliminates manual intervention by resetting the circuit at 100°F after a thermal event.
• Moisture-Resistant Construction: Specifically designed for low load HVAC applications where environmental protection is required.
• Precise 44T Series Calibration: High-performance Therm-O-Disc technology ensures reliable cycling between the 120°F open and 100°F close points.
• OEM Compatibility: Guaranteed fit for flanged airstream mounting in specific Ruud and Rheem package units.

What does a 3-flash code indicate on a Rheem furnace?
A 3-flash LED signal typically indicates a limit control circuit is open. This is often caused by 470015 reaching its 120°F threshold due to blocked filters, restricted ductwork, or a failing blower motor.

How do I test the Rheem 470015 for continuity?
Isolate the switch by removing the 1/4-inch quick connects. Use a multimeter to check for continuity across the terminals. Since this is a normally closed (NC) switch, it should show continuity at room temperature.

Can I use this limit switch in high-voltage 120V circuits?
No. This specific 470015 model is rated for low voltage 26VAC applications. Using it in a high-voltage circuit will cause immediate component failure and poses a safety risk.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.