Specifications

Electrical Rating 
• Voltage: 120-240VAC 
• Frequency: 60 Hz 

Output 
• Type: Relay 
• Form: SPDT, SPST 
• Rating: Normally closed: 30A @ 240 VAC Normally open: 40A @ 240 VAC 


Timing 
• Minimum defrost time: 15 minutes 
• Maximum defrost time: 23 hours 45 minutes 
• Terminate defrost: Defrost can be terminated by shorting “X to N”

Status LED 
• Defrost mode (Red LED) 
• Refrigeration mode (Green LED) Wiring Diagram Line L1 L2 Termination Defrost T’Stat Heater FAN Compressor Replaces 
• Grasslin: 010-0011B, DT040, DT140, DTAV40, DTMV, DTSX 
• Paragon: 8041, 8045, 8047, 8141, 8143, 8145, 8245, 8247 • Precision: 6041, 6045, 6047, 6141, 6145


Mode of Operation:Upon reaching the pre-set interval time for defrost to occur, the ICM550 will enter the defrost cycle which will turn off the fan and turn on the backup heating source. The ICM550 will remain in defrost for the set defrost time. At the end of the set defrost time, the unit will return to normal operation until the next pre-set interval for defrost occurs.