Emerson Electronic Unit Controller User Manual

Below you will find brief information for Electronic Unit Controller. This manual provides a detailed guide on setting up and operating the Emerson Electronic Unit Controller for Copeland condensing units. The controller offers quick and easy setup, control based on suction pressure, improved set point accuracy, and several other features like fan cycling with mid coil temperature, multi-refrigerant product compatibility, and discharge line protection.

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Emerson™ Electronic Unit Controller
for Copeland™ condensing units
Key Benefits
Key Functions
• Quick and easy setup
• Controls unit based on suction pressure
• Improved set point accuracy
• Fan cycling with mid coil temperature*
• Enables multi-refrigerant product
• Discharge line protection*
• Troubleshooting diagnostics
• Added system safeguards
*Feature dependent on system design
Quick Setup Guide
Adjusting Low Pressure Settings
Hold DOWN and SET simultaneously for 3 seconds
to enter menu (PSI light will flash)
Book of Alarms –
to enter alarm menu
+
Cycle through menu options – UP/DOWN
Module Restart –
push to reset
the HPL, DLL
lock out faults
(cycle power)
Select function – SET
Adjust value – UP/DOWN
Store function - SET
Exit menu - UP and SET
+
Low Pressure Cut-In
Fan light 1 &amp; 2
(Fan cycle units only)
Compressor
Low Pressure Cut-Out
Accessing Alarm Code Information
Set – Displays
set point. In
programming
mode, it confirms
an operation
Active
alarm
Run
time
Alarm
history
Service – to enter
service menu
Service
menu
When light is on, feature or component is on or active
Accessing Service Menu
Press and release ALARM
Hold SERVICE for 3 seconds
Cycle through menu options – UP/DOWN
Cycle through menu options – UP/DOWN
Press SET to see number of alarms
Press SET to see number of alarms
Press SET again to return to menu options
Press SET again to return to menu options
Exit menu - UP and SET
Alarm
PoF
Pon
P1
P2
P3
HA
dLt
dLL
HP
HPL
EE
LOC
+
Description
Keypad locked
Keypad unlocked
Suction probe failure
Condenser probe failure
DLT probe failure
High condenser temperature alarm
DLT temperature alarm
DLT lock alarm
High pressure trip alarm
High pressure trip lock-out alarm
Module Failure
Number of lock-outs
Exit menu - UP and SET
Code
+
Description
StH
CompressorStarts –1000 -999999
StL
Compressor Starts –0 -999
CHH
CompressorHours -1000 -999999
CHL
Compressor Hours -0 -999
F1H
Fan 1 Hours -1000 -999999
F1L
Fan 1 Hours-0 -999
F2H
Fan 2 Hours -1000 -999999
F2L
Fand 2 Hours -0 -999
Example: If StH=12 and StL=500, the total number of compressor starts=12,500
Note: After 15 seconds of inactivity the controller will revert
to the default display.
For more information call 1-888-367-9950 or visit
EmersonClimate.com/ElectronicUnitController
052-7275-00
2010ECT-143 R3 (10/13) Emerson and Copeland are trademarks of Emerson Electric Co. or one of its affiliated companies. &copy;2013 Emerson Climate Technologies, Inc. All rights reserved. Printed in the USA.
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Key features

Quick and easy setup
Controls unit based on suction pressure
Improved set point accuracy
Fan cycling with mid coil temperature
Enables multi-refrigerant product
Discharge line protection
Troubleshooting diagnostics
Added system safeguards

Frequently asked questions

To access the service menu, first press and release the ALARM button. Then, hold the SERVICE button for 3 seconds.

Hold the DOWN and SET buttons simultaneously for 3 seconds to enter the menu. Cycle through the menu options using UP/DOWN buttons and select the function using the SET button. Adjust the value using UP/DOWN buttons and store the change using the SET button. Exit using UP and SET.

For more information, you can call 1-888-367-9950 or visit EmersonClimate.com/ElectronicUnitController.