IK2200088

IK2200088 ­ Factory Installed Air Conditioning, EC4.0 System BE, CE, FE, RE Bus Mo...
Countries:
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BAHAMAS, BOLIVIA, BELIZE, CANADA,
CHILE, TAIWAN, COLOMBIA, COSTA RICA,
DOMINICAN REPUBLIC, ECUADOR, EL
SALVADOR, TRINIDAD AND TOBAGO,
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UNITED STATES, URUGUAY, VENEZUELA,
IK2200088
ID:
MEXICO, ARUBA, NICARAGUA, PERU,
PUERTO RICO, Curaçao, GUAM,
GUATEMALA, GUYANA, HAITI, HONDURAS,
JAMAICA, KOREA, SOUTH KOREA, PANAMA
Availability: ISIS, Bus ISIS, FleetISIS
Revision: 7
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BUS BODY
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English
Last
4/24/2015
Modified:
Current
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Author:
10/19/2009
Bob Ford
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Title : Factory Installed Air Conditioning, EC4.0 System BE, CE, FE, RE Bus Models
Applies To : BE, CE, FE, RE Bus Models 48ADD, 48ADE, 48ADG, 48CVA, 48CVC, 48CVH, 48CVJ,
48CVL, 48CVM, 48UTX, 48VHG, 48VHH BE and CE only – 48ADC
CHANGE LOG
Please refer to the change log text box below for recent changes to this article:
04/24/2015 ­ Added link for system specs and capacity's per article feedback
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DESCRIPTION
This article includes the operating instructions and the service manual for the Trans/Air EC4.0 air conditioning system.
Units built with factory installed air conditioning will have an option code for the air conditioning system installed in the
components section in ISIS. (Sample shown below) Verify the operating system ordered on the unit prior to utilizing the
appropriate iKNow article for service information.
Sample Feature Codes
OPERATING INSTRUCTIONS
Trans/Air EC 4.0 Climate Control System
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IK2200088 ­ Factory Installed Air Conditioning, EC4.0 System BE, CE, FE, RE Bus Mo...
Page 2 of 3
The EC4.0 climate control system has two driver control modules: Mode/Fan control switch and Thermostat. The Mode/Fan
control switch turns system on/off and controls evaporator blower speed. The Thermostat displays cabin air temperature, fault
and service codes, and adjusts set point temperature.
BASIC OPERATION
Turn system on
With the vehicle running, press the MODE button to turn EC4.0 system on. The A/C indicator will light up indicating system is in A/C mode. Fan
speed indicator 1 will light up indicating the fan speed is Low. Thermostat will also turn on automatically. LED display shows cabin air temperature.
Select mode of operation (Heat / Defog Optional)
Press the MODE button to change the operation mode between A/C, Defog or Heat.
Change fan speed
Press the FAN button to change the fan speed between Low, Medium, and High.
Change set point temperature
The thermostat LCD display shows cabin air temperature during normal operation. Press UP or DOWN arrow once for set point mode.
The set point temperature and a flashing decimal point will be displayed on the LED in set point mode. Press the UP or DOWN arrow again to adjust
the set point to the desired value. After 5 seconds, EC4.0 will switch back to normal operating mode displaying cabin temperature. The new set point
then becomes effective.
The default set point temperature is 70ºF. This setting is stored in EC4.0’s non-volatile memory. It takes effect every time the
system turns on. To change the default set point temperature setting, go into the setting mode and adjust the set point to the
desired value, then press the UP and DOWN arrow simultaneously. The new set point value will be stored into the non-volatile memory and
become the default set point.
Turn system off
Press the MODE button until all the mode indicators turn off. The fan speed indicators and the thermostat LCD display will turn off consequently.
Fan Only mode operation
Press the FAN button while the EC4.0 system is off. The A/C system will be running in Fan Only mode. (Only evaporator
blowers run, compressor and condenser remain off.) Press the FAN button to set the fan to desired speed (Low, Medium or
High). In Fan Only mode, the thermostat LCD still shows the cabin air temperature. To turn Fan Only mode off, keep pressing
the FAN button until all the fan speed indicators turn off.
TROUBLE SHOOTING
Fault Code
Description
HP
High pressure fault
LP
Low pressure fault
Lu
Low clutch voltage/blown fuse
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IK2200088 ­ Factory Installed Air Conditioning, EC4.0 System BE, CE, FE, RE Bus Mo...
Sr
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No service required when the thermostat LCD shows “Hi” or “Lo”.
Maintenance required
Turn the system off and then turn it back on to reset the “Sr” code. Service is
required if “Sr” code cannot be reset.
System Indicator
Hi
Return air temperature above 90°F SERVICE MANUAL
Lo
Return air temperature below 60°F
EC4.0 Sercive Manual
Click here for the charging system specs and capacity's
Sr
1500 Hr Service Reminder
•
• EC4.0-2.pdf
• EC4.0-3.pdf
CIRCUIT DIAGRAMS
EC4.0-1.pdf
TECHNICAL SUPPORT
Trans/Air Manufacturing
http://www.transairmfg.com
800-673-2446
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Copyright © 2015 Navistar, Inc.
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