ICM Controls ICM291 Furnace Control Board- Carrier Bryant Furnace Control Board LH33WP003/3A
The ICM2801 Furnace Control Board is a form, fit and functional replacement for York/Evcon’s 7990-319P control board. It features micro-processor based precision with a status LED for testing and easy troubleshooting.
- Low cost form, fit and functional replacement for York/Evcon 7990-319P
- Controls vent motor, blower control, hot surface ignitor and gas valve
- Monitors timing, trial for ignition, flame sensing and lockout
- Microprocessor-based
- Reverse polarity detection
- 100 percent lockout safety feature
- Compatible with LP or Natural gas
- Twinning compatible with another ICM2801 control
- Status LED for fault codes to aid in troubleshooting
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
Replaces:
Carrier: LH33WP003, LH33WP003A
ICP: 1171166
ICM291 Installation Guide
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