ICM Controls ICM291 Gas Ignition Control Board (Carrier OEM Replacement Control)

DETAILS:

• Low cost form, fit and functional replacement for Carrier: LH33WP003A
• 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

WEIGHT/DIMENSIONS:

Weight: 0.5
Height: 1.875
Width: 7
Length: 5

SPECIFICATIONS:

Control Voltage: 24 VAC (18-30 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