Firmware release notes
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Code numbers:
084B4082: AK-CC55 Single coil
084B4083: AK-CC55 Single coil UI

Firmware version: 2.01
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Internal release date: 18.06.2025

- Disable Pulsing of fan during variable speed fan
- Reduce number of parameters in ED3, to get below AK-SM720 limit


Firmware version: 2.00
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Internal release date: 25.05.2025

– Update of Injection algorithm

- Added night condition to daily schedules
- Multiple case sections presented for AlSense HACCP report (Thermostat air temp)
– D02 and D05 selectable when using appl mode 6 and – 7 (e.g hotgas defrost if compressor)
– Defrost pulsing
– Variable fan speed with prevention of hotspot build-up
– Separate speed filter for variable fan speed
– Calculate average defrost time for last 10 defrosts
– Door opening history
– Temperature performance monitoring
– Readout of number of high temperature alarms


Firmware version: 1.70
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Release date: 08.03.2022

Fixed bugs:
- Display now shows “OFF” when set off via a DI main switch
- Actual alarm limit readouts updated when main switch is set off

Enhancements:
- Extension of thermostat range from -50°C down to -60°C
- Function to remote lock display keypad (type AK-UI55 Set)
- Added Fan stop function when door opens
- Improved SH-Close control when running Modulating Thermostat (MTR)
- Separate defrost/thermostat parameters for thermostat band 2
- Option for user defined temperature sensors type for S3, S4 and S5
- Improved Melt function when running Modulating Thermostat (MTR)
- Added Oil flush function to force oil back to the compressor / oil receiver
- Option for offset adjustment for sensors S2 and S5 with long cable runs
- Minimum defrost time added to be used in CO2 Hot gas defrost applications.


Firmware version: 1.53
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Release date: 07.12.2020

Fixed bugs:
DI1/DI3 config is written back on illegal options

Enhancements
- Support of stepper valve driver via 0-10Vdc signal
- Added dehumidifier function in humidity control
- Support for a second defrost stop sensor S5B
- Firmware can be updated via KoolProg application
- Superheat and Superheat referecnce added in history log
- Event log added
- Adaptive defrost can run without having condensing pressure distributed from system manager


Firmware version: 1.33
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Release date: 05.11.2019

Initial version