ICM2805A

ICM Controls ICM2805A User guide

  • Hello! I've analyzed the provided document for the ICM2805A Furnace Control Board, which is a replacement control board for various furnace models, including G3RC, G4, G5, G6, M2, and M3. This document provides detailed installation instructions, wiring diagrams and troubleshooting tips. It also describes the board's self-diagnostic capabilities, which can be helpful for identifying common furnace issues by observing the blinking LED fault codes. I'm ready to answer any questions you have about this control board or its installation.
  • What should I do before installing the control board?
    What is the purpose of the template provided?
    What does a blinking LED indicate?
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
  
 
 
 
 
 
 
Continuous 
 Continuous 
 


www.icmcontrols.com
7313 William Barry Blvd., North Syracuse, NY 13212
Toll FreePhoneFax
/