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Rheem-Ruud 470015 Auto Limit Switch 120°F Open 100°F Close

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Special Price $23.42 Regular Price $30.45
In stock
SKU
470015
The Rheem-Ruud 470015 CO Auto Limit Switch is CO(Check) safety component used to protect HVAC equipments from over heating. This is actually a small and yellow limine switch with a normally close contacts as shown in the figure As this system is with a normally close arrangement, it will break the circuit when the temperature is too high. After identifying the limit switch, which is meant for flanged airstream connection, it trips out at 100, and then resets when the temperature is below 120°F. Its enclosed disc face enhances durability and reliability no matter the operating conditions that the device is exposed to. This limit switch enhances the effectiveness of this system and makes the chances of your HVAC unit by reducing the chances of your equipment getting damaged by heat.
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HVAC Controls, HVAC Limit Switch
Manufacturer:
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Specifications

  • Close Temperature: 100°F
  • Color Code: Yellow
  • Connections: 1/4"
  • Contact Orientation: Normally Closed
  • Disc Face: Enclosed
  • Mounting: Flanged airstream
  • Open Temperature: 120°F
  • Reset Mode: Auto
  • Switch Type: SPST
  • Weight: 0.06lbs
Manufacturer Name: Rheem-Ruud
Product Number: 470015
OEM Part Number: 470015
Product Description: 120F Co Auto Limit Switch
Weight:0.06lbs/27.22g

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Product Questions (2)
Customer Questions
What maintenance is required for the Rheem-Ruud 470015 Auto Limit Switch?

Inspect the switch regularly for dust buildup, corrosion, or loose wiring connections. Ensure proper mounting so it responds accurately to temperature changes. Clean terminals gently using the electrical contact cleaner. Periodic inspection can maintain better operation and accurate cutoff performance in heating systems.

What are common issues with the Rheem-Ruud 470015 Auto Limit Switch?

  • Faulty temperature sensing causing premature or delayed cutoff.
  • Loose or damaged wiring connections.
  • Corrosion on terminals reducing electrical continuity.
  • Switch sticking or failing to reset properly.
  • Inconsistent system shutdown during overheating conditions.

Installation Steps

Step 1: Turn off power to the HVAC system and confirm complete electrical isolation before servicing.

Step 2: Remove the access panel and locate the existing limit switch on the airflow path.

Step 3: Disconnect wiring terminals and carefully remove the old switch from its mounting position.

Step 4: Install the new switch in the same orientation, ensuring proper airflow sensing alignment.

Step 5: Reconnect wiring securely to the correct terminals and verify tight connections.

Step 6: Restore power and test for proper operation.