Nordyne 621931R Relay

For veteran technicians servicing Nordyne, Intertherm, or Miller equipment, the Nordyne 621931R Relay is the critical OEM replacement part for ensuring consistent blower motor and electric heat kit operation. This SPDT NO/NC relay (Single Pole Double Throw, Normally Open/Normally Closed) is the direct cross-reference for Nordyne 621931, as well as several legacy part numbers including 6219310 and PR1931. Built for versatility in high-demand residential split systems and mobile home air handlers, this 24V coil relay handles 250 VAC line voltage with a 20/10 Amp current rating, providing a reliable switching mechanism for blower cycles and heater sequencers.

When you are out in the field dealing with a stuck contactor or a blower that refuses to engage, the Nordyne 621931R offers the drop-in compatibility required to restore HVAC system performance without modifications. Its compact frame is designed for space-constrained control boxes, often found in Nortek S5BXM split system air conditioners and AMF series heaters. For pros managing Intertherm furnace repairs, this relay effectively manages the 24VA power rating needed to interface low-voltage thermostats with high-voltage fan circuits, ensuring the HVAC blower relay functions within factory tolerances.

• Universal Compatibility: Serves as the official direct cross-reference for Nordyne 621931, Intertherm, and Miller blower relays.
• Robust Switching: Features an SPDT 20/10 Amp rating at 250 VAC, engineered to handle the inductive loads of residential furnace blowers.
• Standard 24V Coil: Integrates seamlessly with standard 24-volt control circuits for reliable HVAC relay actuation.
• Compact OEM Design: Simplifies installation in crowded electrical cabinets with a footprint optimized for Nordyne air handler components.

Is the 621931R a direct replacement for the 621931?
Yes, the 621931R is the updated OEM replacement relay specifically designed to replace the original 621931 and 6219310 models without any wiring changes.

Can this relay be used in Miller or Intertherm mobile home furnaces?
Yes, this SPDT NO/NC relay is a standard component for many Intertherm and Miller furnaces, typically used for controlling the blower motor or auxiliary heat kits.

What is the contact configuration for this part?
This is an SPDT relay with normally open (NO) and normally closed (NC) terminals, allowing it to control two separate circuit paths depending on the 24V coil energization status.

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.