Troubleshooting - Danfoss OPTYMA Control User Manual

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.
© Danfoss | DCS (vt) | 2020.03
on steady).