![background image](http://html2.mh-extra.com/html/danfoss/optyma-ico2/optyma-ico2_user-manual_3414537066.webp)
Error code
Remote control:
7-segment display:
LED
Green
Red
Keep
flashing
Content
–
E58-1
Compressor anomaly by loss of synchronism
5. Troubleshooting
Diagnosis
Countermeasure
Is this
the first time to start up within
1 hour after the power
ON?
Save the Mente PC data of 30
minutes before stopping
Check the data 30 minutes
before stopping
Change wire connections
on inverter and compressor,
and operate again.
NO
NO
NO
NO
NO
YE S
YE S
YE S
YE S
YE S
YE S
Power
transistor
error
Short-
circuited
Good
Does it repeat?
Is there
inverter output?
Is DC15V detected
on inverter PCB?
(*3)
Check
inverter PCB for
defect with the
checker. Other
(Including checker
not available)
Check resistance between
power transistor modules. (Is it
shortcircuited?) (*4)
NO
Is the harness/connector
connection between the inverter board
(CNR) and the diode module
(G, K) OK?
Does it
repeat on the other
compressor?
YE S
Does the system have
one compressor only?
Does it repeat?
(Repeats on one
unit only.)
(Repeats on
two units.)
(Not repeat on
both units.)
NO
NO
Good
・Check the operation
status and record it.
There is a possibility that the
liquid refrigerant is migrated in
the compressor.
Wait for about one hour with
keeping the power source and
then restart operation.
(In order to evaporate the
liquid refrigerant migrated
in the compressor by power
source to the crankcase heater.)
Wait and see.
Replace compressor.
Measure after confirming
that 52C or 52X is turned
ON.
Replace inverter PCB.
Replace power transistor.
Replace power transistor.
Replace harness.
Replace inverter PCB.
Wait and see.
Replace compressor.
Note: *3 Measurement position: B and - of C19 or Between pins 5-8 of PC18, 19 and 20
*4 Measurement position: Check resistance between P-U, P-V, P-W, N-U, N-V, N-W, P-N. (Disconnect compressor wires before measurement.).
If it fails to repeat, connect the Mente PC, and continue to collect data.
1-time
flash
All models
When E58-1 is displayed on the
7-segment LED display
If this anomaly is established 4
times within 20 minutes
・
Insufficient communication
hours before start operation.
(Start operation without power
source to the crankcase heater
in advance)
・
Compressor anomaly
・
Harness anomaly
1. Applicable model
2. Error detection method
4. Presumable cause
3. Condition of error displayed
Condensing
unit
User Guide | Optyma™ iCO2
66 | BC408445719305en-000101
© Danfoss | Climate Solutions | 2023.01 | LCA012A030