Danfoss AK-UI55 Info - Installation Guide
Summary
This comprehensive installation guide is essential for technicians deploying and servicing the AK-UI55 controller system. It provides detailed specifications covering mounting requirements (NEMA 4, IP65), temperature/environmental tolerance, and electrical connection procedures. Beyond physical setup, the manual offers critical operating information, detailing status display messages related to defrosting cycles, energy optimization, alarm conditions, and various error codes. It ensures users can correctly set up, maintain, and troubleshoot complex commercial appliances requiring precise process monitoring.
Page 1 Text Content
Installation Guide
AK-UI55 Info
AN324531493969en-000101
Identification Dimensions
Mounting NEMA4 IP65
0.5 - 3.0 mm
= 0 – 55 °C amb 32 – 130 °F Non condensing
Connection
RJ 12
L max. = 100 m
AK-UI cable, 3 m: 084B4078 AK-UI cable, 6 m: 084B4079
+ L : max. = 100 m
AK-UI55 Info
Lights up in event of: Alarm
Lights up in event of: Energy optimization Cooling Defrosting Fan operation
With start-up /connection to a controller, the display will “light up in circles” as it collects data from the
The display can give the following messages: controller. -d- Defrost is in progress Err The temperature cannot be displayed due to a sensor error Fan Appliance cleaning has been initiated. The fans are running OFF Appliance cleaning is activated and the appliance can be cleaned OFF The main switch is set to Off SEr The main switch is set to service / manual operation CO2 Flashes: Will display in event of a refrigerant leakage alarm, but only if the refrigerant is set up for CO2
© Danfoss | DCS (vt) | 2019.11 AN324531493969en-000101 | 1
Page Summary Contents For Danfoss AK-UI55 Info - Installation Guide
Manual Details
| Brand | Danfoss |
|---|---|
| Pages | 1 |
| File Size | 687.03 KB |
| Published | June 03, 2026 |
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Frequently Asked Questions
What are the operational temperature ranges?
The operating range is 0.5 to 3.0 mm thickness (t) and -55°C to 55°C ambient.
What kind of connections are available for this unit?
It features RJ12 L connections with a maximum length of 100m, using the AK-UI cable.
Under what conditions does the display light up?
The display will 'light up in circles' when starting up or connecting to a controller while collecting data. It also lights up during alarms, energy optimization, cooling, defrosting fan operation, and with certain messages (e.g., 'Defrost is in progress').