Anti Freeze Function (Applicable For Eeta Only); Quick Test Mode; Sensor Error Handling; Potentiometer Error Handling - Danfoss EET Series User Manual

Refrigeration controller, type EET series
Figure 10: Dual compressor support
ON
Compressor 1
OFF
ON
Compressor 2
OFF
Scd
ON Cycle

Anti Freeze function (applicable for EETa only)

This feature protects the bottle coolers from freezing, if they are installed outdoor with low ambient temperature.
The controller automatically switches between cooling and heating mode if the cabinet air temperature goes below
the allowed limit, thus preventing the freezing of stored products. This feature can be activated only when the
defrost type used is electrical.
Figure 11: Automatic heater control for Anti Freezing applications
Energy mode delay
Cooling
mode
Heating
mode
Drop in ambient
temperature

Quick Test mode

This feature helps test all the outputs of the controller instantly when connected to an actual application in the OEM
Production line or during field service. The feature can be used when connected to KoolProg or by using MODBUS
commands (please contact the Danfoss support team for info about MODBUS commands).

Sensor Error handling

In the event of cabinet sensor error/ failure, cabinet temperature can be controlled in EET controller using two
methods to avoid food spoilage until the failed sensor is replaced.
1. Manual Error handling: Run the compressor for fixed ON and OFF time by defining error run time and error stop
time.
2. Auto Error handling: Smart self-learning feature of EET controller, controls the compressor cycle based on past
compressor cycles.

Potentiometer Error handling

Potentiometer error handling automatically sets the cabinet temperature to smart default setting to avoid food
spoilage in the event of a potentiometer failure.
© Danfoss | Climate Solutions | 2023.07
OFF Cycle
Energy mode delay
Increase in ambient
temperature
BC320944106159en-000301 | 9