ICM Controls ICM288 User Manual

TWINNING WIRING DIAGRAM – Single Stage Thermostat
TWINNING WIRING DIAGRAM – Two Stage Thermostat
SW1 Switch 3: TWIN
SW1 Switch 4: 2nd
SW1 Switch 3: TWIN
SW1 Switch 4: 2nd
SW1 Switch 3: TWIN
SW1 Switch 4: 1st
SW1 Switch 3: TWIN
SW1 Switch 4: 1st
FAULT CODES
LEDS Flashes Fault condition
GREEN
ON Steady Normal operation
1 Flash Ignition failure (5 trials)
2 Flashes Pressure switch stuck open
3 Flashes Limit switches open
4 Flashes Pressure switch stuck closed
5 Flashes Twinning problem
6 Flashes Brownout voltage
7 Flashes Hot & Neutral reversed or no ground connected
Continuous Gas valve relay shorted
1 Flash every 2 sec. Flame fault
YELLOW
Continuous Low flame or no flame
ON Flame present
The control has built-in self-diagnostic capability. If a system problem occurs, a blinking LED
shows a fault code.

ICM Controls ICM288 Specifications

General

Brand	ICM Controls
Model	ICM288
Category	Control Unit
Language	English