Replacing AK-CC 550 with AK-CC55
NOTE:
Be aware when exchanging an AK-CC 550 controller with a new AK-CC55 controller - new wiring principles!
Table 12: Replacing AK-CC 550 with AK-CC55
Pressure sensor has new connection – signal and ground are switched
SPDT relays have a new wiring scheme – NO and NC terminals are switched (e.g. defrost
heater on when it should be o)
Modbus has new connection scheme (A,B and screen)
New AK-UI55 displays and cables with 6 wires vs. 3 wires for EKA 16x
• AK-CC55 does not support two EEC coils connected to one AKV output.
• Pressure transmitter can be shared between AK-CC 550 and AK-CC55.
• DI2 defrost coordination can be wired between AK-CC 550 and AK-CC55.
AK-CC55 Single Coil and Single Coil UI
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