Product Overview

ICM291
GAS IGNITION CONTROL BOARD
LIS222-1
Features
• 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
Specifications
•Control voltage:24VAC(18-30VAC),60Hz
•Line voltage:208/230VAC,60Hz
•Power consumption:0.3Aplusgasvalvecurrentat24VAC
•Operating Temperature:-40°C(-40°F)to75°C(176°F)
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
Replaces
Carrier:LH33WP003A
Low cost, form, fit and functional
replacement ignition control