Danfoss Optyma iCO2 User Manual page 56

User Guide | Optyma™ iCO2
Error code
Remote control: –
7-segment display:
1. Applicable model
All models
2. Error detection method
When E45 is displayed on the
7-segment LED display
3. Condition of error displayed
When the communication
between inverter PCB and
control PCB is not established
4. Presumable cause
• Disconnection of signal
wiring harness
• Control PCB anomaly
• Inverter PCB anomaly
• Anonaly of inrush current
suppression resistance
Note: If the same error does not reappear, continue to get data with Mente PC.
56 | BC408445719305en-000101
LED Green
Keep
Condensing
unit
E45-1
ashing
5.Troubleshooting
Save the data 30 minutes
before stopping into the
Mente PC
Is the LED 2
on the control PCB
ashing?
YES
Is the LED 1
on the inverter PCB
ashing ?
YES
Is the fuse F2 blown?
NO
Reset the power source and restart
Does E45 recur ?
YES
63H1 activate at the
pressure 140 bar or
higher ?
there loose
connection of 63H1-1at
the connector on the
PCB or disconnection
of 63H1-1wire?
NO
Go to next page
Red
Content
between inverter PCB and control PCB
1-time
High pressure anomaly (63H1-1 activated)
ash
Diagnosis
Does
YES
Does
the high pressure
sensor (PSH1) show
140 bar?
YES
NO
Does the refrigerant
circuit get clogged?
NO
Is
© Danfoss | Climate Solutions | 2023.01 | LCA012A030
Communication error
Countermeasure
• Check the operation status and
record it.
Replace control PCB.
NO
Replace inverter PCB.
NO
Check the cause of F2 blown.
Check wiring mistake and short
YES
circuit of AC220V line.
After checking, replace fuse F2.
Restart operation under the
operating conditions of 30 minutes
before error occurred as possible
as you can.
Wait and see.
NO
(If possible, collect the operation
data continuously.)
Go to next page
NO High pressure sensor anomaly is
suspected.
After restarting operation, check
the high pressure sensor itself.
(If the high pressure sensor has
anomaly, replace it.)
Do not use pressure gauge
for mesuring pressure while
operating.
YES Clear the clog.
[Check items]
Gas cooler, Strainer,
Clogging of gas cooler.
Connect the connector
YES
securely.
Rectify the disconnection
of 63H1-1 wire.