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ICM ICM291 - Item # - OEM Replacement, Carrier LH33WP003 (DSI Control Board)

Item: ICM291
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Furnace Control Board #ICM291

ICM offers low cost, form, fit and functional replacement furnace controls for many popular OEM models. Our furnace controls come standard with many safety features including 100% gas shutoff in case of ignition failure.

Features and Applications
  • Direct Spark Ignition (DSI) control board
  • Microprocessor-based
  • Controls combustion, blower and indoor fan 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

  • Control Voltage: 24 VAC (18 to 30 VAC) @ 60Hz
  • Line Voltage: 208/230 VAC, 60Hz
  • 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
  • LED Indicators:
    • Red LED: Steady ON-normal operation;
  • Flashing-fault codes 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

  • Carrier: LH33WP003, LH33WP003A


NameICM ICM291 - Item # - OEM Replacement, Carrier LH33WP003 (DSI Control Board)
Gemaire Item NumberICM291
Manufacturer Product NumberICM291
SKU - PIM Number1395692594164
ERP Number274730
Unit of MeasureEA
Weight0.5 Pounds (Lb)
Length5.0 Inches (In)
Width7.0 Inches (In)
Height1.9 Inches (In)
Country of OriginUSA
BrandICM Controls
Voltage18-32 VAC
Full Load Amps0.3
Control Voltage24 VAC
Cycle/Hertz50/60 Hz
ApplicationFurnace Control
FeaturesDirect Spark Ignition (DSI) control board, Microprocessor-based, Controls combustion, blower and indoor motors; spark
GEM - Case Quantity


Parts List