Description
ICM Controls ICM291 OEM Replacement, Carrier LH33WP003 (DSI Control Board)
Carrier OEM Replacement Control
Direct Spark Ignition (DSI) Control Board
The ICM291 control is low cost form, fit and functional replacement board for Carrier: LH33WP003A circuit boards. It controls inducer fan motor, blower fan and monitors limit switches. The ICM291 has incorporated LED diagnostics to assist in troubleshooting.
Fault code information can be found in the application guide. Please refer to the application guide with the furnace installation manual for future reference.
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
SPECIFICATIONS:
Control Voltage: 24 VAC (18-30 VAC), 60 Hz
Line Voltage: 208/230 VAC, 60 Hz
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
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;
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
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
Spark Gas Valve: GV
Combustion Motor: CM
Blower Motor: BM
Indoor Fan Motor: IFO
WEIGHT/DIMENSIONS:
Weight: 0.5
Height: 1.875
Width: 7
Length: 5
