John Deere Heater Unit Resistor - AL224589

John Deere AL224589 Heater Unit Resistor is an OEM HVAC component designed to regulate the blower motor in cab heating and air conditioning systems on John Deere equipment. This 12V resistor network provides selectable resistance to multiple blower speeds and fits within the heater/evaporator housing as a direct replacement.

Overview

• Manufacturer: John Deere
• Part name: Heater Unit Resistor (also listed as A-AL224589 Resistor Network)
• Purpose: Regulates blower motor voltage to achieve multiple fan speeds in cab HVAC/heater assemblies
• Electrical rating: 12V nominal
• Form factor/dimensions: 4.6 in (L) × 2.6 in (W) × 2.1 in (H); weight 0.461 lb
• OEM/fit: Direct replacement for compatible John Deere heater/blower resistor assemblies

Key Features

• Part Number: AL224589
• Alternate designations: A-AL224589 (Resistor Network)
• Machine type: Suitable for John Deere equipment with 12V HVAC blower resistor networks (4-pin configuration in the evaporator/heater assembly)
• Installation tips:
  • Power off and disconnect the battery before replacement
  • Access the resistor within the HVAC housing following service manuals
  • Disconnect the electrical harness, remove the old resistor, and install AL224589 in the same orientation
  • Reconnect harness, reassemble housing, and test blower speeds; inspect connectors for corrosion or damage

Compatibility

• Suitable machine models: John Deere equipment requiring AL224589 heater unit resistor (blower/resistor network) as part of the HVAC/cab heater system
• Alternative part numbers / cross references: AL77301, AL152449, AL111591; A-AL224589 (Resistor Network)