ICM CONTROLS ICM870-32A Soft Start Series Built In Start Capacitor User Guide

: October 30, 2023
: ICM CONTROLS

Table of Contents

FEATURES
SPECIFICATIONS
IMPORTANT SAFETY INFORMATION
APPLICATION
LED INDICATORS
FAULT CODES
WIRING DIAGRAM (GENERAL LAYOUT)
INSTALLATION
WHICH MODEL DO I NEED?
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

INSTALLATION, OPERATION & APPLICATION GUIDE

ICM CONTROLS ICM870 32A Soft Start Series Built In Start Capacitor -
Cover

For more information on our complete range of American-made products plus wiring diagrams, troubleshooting tips and more, visit us at www.icmcontrols.com

FEATURES

Starting current reduction and self-learning algorithm
Built-in start capacitor
Over-current protection
Over/under voltage monitoring
Diagnostic indicators
Sealed enclosure

SPECIFICATIONS

Semi-Conductor Soft-Start Motor Controller, Form 2, Bypassed Controller

SCCR: 5kA
Ue = 240 VAC
Ui = 240 VAC
Uimp = 4kv
Pollution degree 3

Input (L1, L2) – 100-240 VAC 50/60Hz

Over voltage limits: 115 VAC nominal = 140 VAC,
240 VAC nominal = 264 VAC
Under voltage limits: 115 VAC nominal = 95 VAC,
240 VAC nominal =195 VAC

Outputs: Compressor

Solid state/relay
Current: Max. nominal = 32A
Over current limits: ICM870-32A = 40A

Environmental:

Ambient temperature: 40°C @ 32 FLA, 8 hour duty
Storage temperature: -40°F to 149°F (-40°C to 65°C)
Humidity: 0-95% non-condensing
Enclosure: IP65
Dimensions: 7.94” x 4.20” x 2.10”
Screw hole center points: 7.36” x 2.97”

IMPORTANT SAFETY INFORMATION

HIGH VOLTAGE WARNING – Always turn off power at the main service panel before installing.

CAUTION: The ICM870-32A must be mounted in an area where it will not be exposed to water or the elements. Exposure of the ICM87032A soft start to water can cause failure of the control and is a risk for fire or other electrical safety hazards.
Suitable for use on a circuit capable of delivering not more than 5,000 rms symmetrical Amperes, 240 V maximum when protected by a circuit breaker having not more than 40 A, 240 volts maximum Installation of any ICM870-32A soft start must be done by a certified HVAC technician or licensed electrician. All installations are to be done in accordance with local, state, and national electrical codes.

APPLICATION

The ICM870-32A is intended for Marine, Recreational Vehicle, HVAC and commercial applications. The ICM870-32A integrates compressor in-rush current over startup time, thus reducing peak current demand on a power supply source (generator or other). The ICM870-32A will monitor system health including voltage, current, compressor startup and self integrity. Upon a fault condition, the ICM870-32A will halt operation and initiate a 3 minute anti- short cycle routine while
providing diagnostic fault information by means of an LED indicator.

ICM870-32A COMPARABLE AMPERAGE CROSSES
The ICM870-32A model crosses to the comparable amperage models from the following manufacturer’s:

Micro-Air (Easy Start)
Dometic (Smart Start)
Network RV (Soft Start)
Hyper Engineering (Sure Start)

LED INDICATORS

START = Green • RUN = Green • FAULT = Red (flashing)

FAULT CODES

Fault Code	Fault Condition
1	High or low voltage
2	Compressor not sensed or open fuse
3	High current
4	Compressor start error
5	Invalid operating frequency

FOR RESIDENTIAL A/C’s

WIRING DIAGRAM (GENERAL LAYOUT)

ICM CONTROLS ICM870 32A Soft Start Series Built In Start Capacitor - WIRING
DIAGRAM 1

FOR RV & MARINE A/C’s
WIRING DIAGRAM (GENERAL LAYOUT)

ICM CONTROLS ICM870 32A Soft Start Series Built In Start Capacitor - WIRING
DIAGRAM 2

Special attention should be made with respect to the termination of the field wiring leads. When these leads are terminated at a terminal, they shall terminate only at a terminal suitable for minimum 90°C wire.

INSTALLATION

Step #1 Connect the (ICM870 RED WIRE) > to the run capacitor terminal (c/common/T2)
Step #2 a) Disconnect factory installed compressor run wire from the contactor terminal (T2/L2) b) Splice the (ICM870 BROWN WIRE) > to the compressor run wire previously disconnected in (Step 2A)
If there is a Start Capacitor and or PTCR already in place, additional steps will be required to disconnect.
Step #3 Connect the (ICM870 BLUE WIRE) > to the run capacitor terminal (herm/hermetic/start)
Step #4 Connect or splice the (ICM870 BLACK WIRE) > to the contactor terminal (T1)

INSTALLATION
Step #1 a) Disconnect factory installed compressor run wire from the common run capacitor / L2 terminal b) Splice the ICM870 BROWN WIRE > to the factory installed compressor run wire previously disconnected in step #1A.
If there is a Start Capacitor and or PTCR already in place, additional steps will be required to disconnect them.
Step #2 ICM870 RED WIRE > to the run capacitor (c/common/L2) terminal
Step #3 Connect the ICM870 BLUE WIRE > to the run capacitor (herm/hermetic/start) terminal
Step #4 Splice the ICM870 BLACK WIRE > with the factory install compressor Overload Switch wire (OL/L1)

WHICH MODEL DO I NEED?

ICM870-9A: For AC’s with a Compressor Rated Load Amps (RLA) of up to 9A
ICM870-16A: For AC’s with a Compressor Rated Load Amps (RLA) of 9.1-16A
ICM870-32A: For AC’s with a Compressor Rated Load Amps (RLA) of 16.1-32A

This chart reflects average conversions of Single-Phase Air Conditioning and Heat Pump Tonnage, BTU’s, HP, and RLA. Please refer to you user manual or service panel to determine your actual RLA before deciding which model ICM870 you need.

Air Conditioning & Heat Pump Loads – Average