ICM Controls ICM2805A User guide

Brand: ICM Controls

Model: ICM2805A

Type: User guide

ICM Controls ICM2805A is a furnace control board designed to replace existing boards in various furnace models, including G3RC, G4, G5, G6, M2, and M3. It offers self-diagnostic capabilities, displaying fault codes via a blinking LED for easy troubleshooting. The board features built-in protection against ignition failure, pressure switch malfunctions, and incorrect voltage conditions. Installation requires disconnecting the power supply and carefully following the provided instructions, which include drilling new mounting holes for specific furnace models.

DANGER: -

-



CAUTION: 



 



 

ICM2805A



 







 ICM2805A



NOTE: Do not flex the ICM2805A circuit board. Apply pressure only at

the standos.

 







 











 

ICM2805A

 



ICM2805A











 









 ICM2805A



NOTE: Do not flex the ICM2805A circuit board. Apply pressure only at

the standos.

 

ICM2805A

 



ICM2805A

 

ICM2805A



NOTE: Do not flex the ICM2805A circuit board. Apply pressure only at

the standos.

 

INSTALLATION, OPERATION & APPLICATION GUIDE



www.icmcontrols.com

ICM2805A

Furnace Control Board

G3RC AND G4 FURNACE MODELS (SEE FIG. 1)

G5 FURNACE MODELS (NO MODIFICATIONS REQ.)

G6, M2 & M3 FURNACE MODELS

(NO MODIFICATIONS REQ.)































MODIFICATION

IS REQUIRED FOR

G3RC AND G4

MODELS ONLY.

If the P2 plug has

4 black wires

in positions

1 and 4, 3 and 6;

the modication

is not required.



























Figure 1

ONE-YEAR LIMITED WARRANTY













G5RL Models:

G5RL Models only:



All G4 and G5 furnaces, except G5RL Models:







/

ICM2805A FAULT CODES

LED’S Flashes Fault Condition

  

 