ICM400 Setup
Voltage Adjust:
Set knob to match 3-phase voltage of system
Fault Interrogation (in seconds):
Set to the amount of time for the
ICM400
to analyze a non-critical fault* before de-
energizing the load
** Recommended:
7 to 8 seconds
Lockout Time Delay (in minutes):
Set to the amount of time between the de-energizing of the load and the
ICM400
attempting to re-energize the load
** Recommended:
4 minutes
% Voltage Unbalance:
Set to the amount of allowable voltage unbalance between the 3-phase lines
**
Recommended:
4 to 5%
* Non-critical faults are faults such as high/low voltage and phase un-balance. Critical
faults are phase loss and phase reversal. When a critical fault is detected, the load
is de-energized immediately.
** For best recommendations, consult manufacturer of motor/compressor.
2-Pole Contactor
* Thermostat, pressure switch, etc.
LINE
3
LINE
1
LINE
2
LOAD
1
LOAD
2
LOAD
3
Control
Voltage
L01
L02
L03
L0AD
LI1
LI3
LI2
ICM400 Wiring Diagrams
3-Pole Contactor
LINE
3
LINE
1
LINE
2
LOAD
1
LOAD
2
LOAD
3
Control
Voltage
L01
L02
L03
L0AD
LI1
LI2
LI3
* Thermostat, pressure switch, etc.
Patent No. 424,953
7313 William Barry Blvd., North Syracuse, NY 13212
(
Toll Free
) 800-365-5525 (
Phone
) 315-233-5266 (
Fax
) 315-233-5276
www.icmcontrols.com
ONE-YEAR LIMITED WARRANTY
The Seller warrants its products against defects in material or workmanship for a period of one (1)
year from the date of manufacture. The liability of the Seller is limited, at its option, to repair, replace
or issue a non-case credit for the purchase prices of the goods which are provided to be defective.
The warranty and remedies set forth herein do not apply to any goods or parts thereof which have
been subjected to misuse including any use or application in violation of the Seller’s instructions,
neglect, tampering, improper storage, incorrect installation or servicing not performed by the Seller.
In order to permit the Seller to properly administer the warranty, the Buyer shall: 1) Notify the Seller
promptly of any claim, submitting date code information or any other pertinent data as requested by
the Seller. 2) Permit the Seller to inspect and test the product claimed to be defective. Items claimed
to be defective and are determined by Seller to be non-defective are subject to a $30.00 per hour
inspection fee. This warranty constitutes the Seller’s sole liability hereunder and is in lieu of any
other warranty expressed, implied or statutory. Unless otherwise stated in writing, Seller makes no
warranty that the goods depicted or described herein are fit for any particular purpose.
LIAF054
Problem
LED Status
Corrective Action
Load will not energize
All LEDs are OFF
Check incoming power and/or control voltage input
Front fault LED ON
Slowly turn the
Voltage Unbalance
knob to maximum (25%):
• If a fault condition continues, check for phase loss with voltmeter
• If a fault condition still exists, reverse any two of the phases on the line side of the
ICM400
*
Front fault LED ON
High or low LED ON
Turn the
Voltage Adjust
knob up or down very slowly until either High or Low voltage LED
turns off
Lockout LED ON
Turn
Lockout Time Delay
knob to .1 minutes; set reset switch to the
AUTO-AUTO
position
Front fault LED ON after the load is OFF Slowly adjust the
Voltage Unbalance
knob to a higher percentage
Load turns ON and OFF
Back fault LED ON
Check for voltage unbalance, phase loss or phase reversal on the load side of the
ICM400
The load short-cycles when the thermostat
is repeatedly opened and closed (thermostat
bounce)
Lockout LED ON
Back fault LED ON
Reconnect the control input as outlined in the (see Typical System Diagram)
Troubleshooting
* Only swap phases during initial setup, not after the
ICM400
has been in operation without errors.
Note:
After troubleshooting, reset all adjustment knobs and switches to motor/compressor manufacturer’s recommendations.
Typical System Diagram
Contactor
* Install jumper for 24 VAC anticipator type thermostats.
*
Compressor
Thermostat
Control Transformer
Line
Voltage
