30
7 TROUBLESHOOTING
Type E7 EcoCool™ Electronic Temperature and Defrost Controllers
©2008 Invensys Controls All rights reserved.
DRAFT VERSION
Problem Solution
The red alarm LED remains illuminated after controller startup; a
check sum error
has occurred.
Re-install the firmware using EcoSoft Program (6.2.8) or a copy card (6.3.4).
A temperature alarm occurs soon after startup. Increase the Temperature Alarm Disable Time after Start up (see 6.2.5.4).
A temperature alarm occurs soon after defrost. Increase the Temperature Alarm Delay after Defrost (see 6.2.5.4).
A high temperature alarm does not reset when the temperature
decreases or a low temperature alarm does not reset when the
temperature increases.
Decrease the Temperature Alarm Differential (see 6.2.5.4).
A temperature alarm occurs when the temperature is at the
setpoint.
Adjust the temperature alarm setpoints (see 6.2.5.4).
EcoSoft Program cannot communicate with the controller after
connecting the interface box to your computer.
Check all cable connections:
• Between controller and interface box
• Between interface box and computer
• Power supply cable to interface box
If everything appears okay reboot the computer and start EcoSoft Program again.
The display shows E1.
Check the control sensor, wires, and connections
If all connections appear okay replace the control sensor.
The display shows E2.
Check the evaporator sensor, wires, and connections.
If all connections appear okay replace the evaporator sensor.
If no evaporator sensor is in use, disable the evaporator sensor (see 6.2.5.1).
The evaporator sensor is not working properly. Make sure the controller is configured to use an evaporator sensor (see 6.2.5.1).
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