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User Guide | Optyma™ control AK-RC 113 three phase

7.2 Troubleshooting

16 | BC317523579312en-000101

If there is not an alarm code, we list below some of the most common causes that can cause

anomalies. These causes can be due to problems internal or external to the electrical panel.

Event

Possible cause

Absence of power supply.

Intervention of the general

protection circuit breaker.

The compressor

doesn't start

Intervention of the circuit breaker

Display is OFF

of the auxiliary circuits.

Intervention of the secondary

circuit protection fuse on the

transformer.

The panel is in stand-by.

The compressor

doesn't start

Intervention or anomaly of

pressure switches or kriwan.

Incorrect setting of the

The defrost cycle is

parameters relating to the defrost

not performed

cycle

Operation to be performed

• Check that the display on the panel and the plant in

operation green light

are on.

• Check the connections of the ambient probe.

• If the problem persists replace the sensor.

• Before reinserting the circuit breaker, check that

there are no short circuits. Then reinsert the circuit

breaker checking all the absorptions to identify any

anomalies.

• Before reinserting the circuit breaker, check that

there are no short circuits. Then reinsert the circuit

breaker checking all the absorptions to identify any

anomalies.

• Restore the fuse (Glass fuse 10x20 F250mA 250V).

• Check that the absorption on the econdary of the

transformer does not exceed 0.25A.

• Check that no other users have been connected to

the Kriwan power supply terminals.

• Check that there are no short circuits on the

secondary circuit.

• Verify that the panel is not in standby mode (flashing

green light). In this case, press the key to

reactivate the panel (green light

• Check the electrical connections, the calibrations

and the correct functioning of the sensors and the

compressor.

• If it is the first ignition, check the presence of the

"PumpDown / Thermostat" operating mode selection

bridge on terminal board X1 and jumper the consent

terminals of the devices not present in the system

(Pressure Switches, Kriwan)

• Check the correct entry of the parameters.

on steady).