ICM – ICM291
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:
SparkGas Valve: GV
Combustion Motor: CM
Blower Motor: BM
Indoor Fan Motor: IFO
