Every effort has been made to insure the accuracy of product data and cross reference information. Design changes may result in different operating characteristics or dimensional changes from one manufacturer to another. Therefore, Packard cannot accept responsibility for the ultimate selection. For additional information, please contact Packard

*Disclaimer                            Use the Product Selector Tool

ICM Furnace Control Replaces Carrier LH33WP003 & LH33WP003A

  • Direct Spark Ignition (DSI) Control Board
  • Microprocessor-Based
  • Controls Combustion, Blower and Indoor Motors; Spark Ignitor and the Gas Valve
  • Monitors Timing, Trial for Ignition, Flame Sensing and Lockout
  • 100% Lockout Safety Feature
  • Compatible with LP or Natural Gas
  • Status LED for Fault Codes to Aid in Troubleshooting
  • Power cons: 0.3A plus gas valve current @ 24 VAC
  • Timing:
  • Pre-purge: 45 seconds
  • Trial for Ignition: 5+2 seconds
  • Retry period: Every 20 seconds for
    • 15 minutes
    • Lockout: manual reset
    • Post-purge: 45 seconds
  • Inputs:
    • Power: RT and C
    • Thermostat interface: R, W and G
    • Safety switches: RS, LS, and CS
    • Combustion motor Hall Effect
    • sensor
    • Flame sensing
  • Outputs:
    • Spark
    • Gas Valve: GV
    • Combustion motor: CM
    • Blower motor: BM
    • Indoor fan motor: IFO
  • LED indicators:
  • Red LED:
    • Steady ON- normal operation
    • Flashing – fault codes
Control Voltage 24 VAC (18-30 VAC), 60 Hz
Voltage Line: 208/230 VAC, 60 Hz
Operating Temp. °F -40°F to 176°F
Carrier LH33WP003/3A

Item ID : ICM ICM291