Alarm And Error Messages; Repair; Controller Failure - Danfoss Optyma Plus Series Manual

Manual

Alarm and Error Messages

Repair

Controller failure

(if the controller fails, there is a
possibility to run the condensing
unit in "manual" mode. Proceed as
follows)
Controller Installation
• In case of "malfunctions" 3 small LED
symbols will flash on the controller's screen.
Acknowledge with a short press on upper
button. Here some examples below ...
Fixed speed units:
See wiring diagrams on p. 4.
• Disconnect the condensing unit from power supply (turn hardware main switch off )
• Remove wire from controller terminal 22 (safety input DI3) and terminal 25 (room thermostat DI1)
and put them together
• Remove wire from controller terminal 24 (room thermostat DI1) and terminal 11 (compressor
supply) and put them together
• Remove wire 6* and connect it with terminal bridge for wire 11 and 24.
• Remove wire from terminal 14 (crankcase heater) and connect it to compressor contactor K2
terminal 22
• Remove wire from controller terminal 12 (supply crankcase heater), extend this wire
approximately 40cm and connect it to compressor contactor K2 terminal 21
• Pay attention: Remove the big terminal block from the controller or remove the complete controller
• Connect the condensing unit back to power supply (turn hardware main switch on)
Variable speed units:
See wiring diagrams on p. 5.
• Disconnect the condensing unit from power supply (turn hardware main switch off )
• Remove wire from controller terminal 22 (safety input) and terminal 6* (fan) and put them
together
• Remove wire from controller terminal 10 (compressor relay) and terminal 24 (room thermostat)
and put them together
• Remove wire from controller terminal 11 (compressor relay) and terminal 25 (room thermostat)
and put them together
• Remove wire from Inverter terminal 50 and connect to Potentiometer terminal 3
• Remove wire from Inverter terminal 53 and connect to Potentiometer terminal 2
• Remove wire from Inverter terminal 55 and connect to Potentiometer terminal 1
• Remove wire from terminal 14 (crankcase heater) and connect it to compressor contactor K1
terminal 22
• Remove wire from controller terminal 12 (supply crankcase heater), extend this wire
approximately 40cm and connect it to compressor contactor K1 terminal 21
• Pay attention: Remove the big terminal block from the controller or remove the complete controller
• Connect the condensing unit back to power supply (turn hardware main switch on)
*Option: A fan pressure switch or fan speed controller can be connected in series to wire n°6
A2 Low Suction Pressure Alarm
A17 Safety Input Alarm (DI3: High condensing
/ low suction pressure)
A96 Discharge Gas Temperature High
A97 Digital Input Alarm (DI2: Frequency
converter alarm)
E20 Condensing Pressure Transmitter Error
E31 Ambient Temperature Sensor Error
E32 Discharge Temperature Sensor Error
E33 Suction Gas Temperature Sensor Error
E39 Evaporating Pressure Transmitter Error
BC08728642552802-001001
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