Do not activate the automatic fault reset function on any system where it can be the cause of a
potentially dangerous situation.
Do not try to repair the electric device. In the case of suspected fault or malfunction, contact
Danfoss or authorized service center for further assistance.
For the reason of general safety and correct operative actions, read the instructions carefully
before you start any analyses or work with the electric device.
Use correct personal protective equipment when you are near the electric device.
Some unexpected situations may occur while operating the electric device. Some of the possible causes
and actions are given in table below. If an unexpected situation occurs, it should be corrected as soon as
possible.
These instructions do not cover all details or variations in the equipment nor provide information for
every possible condition to be met in connection with installation, operation or maintenance.
Troubleshooting
Fault description
Possible cause
Action
Electric device
overheating
Cooling system failure.
Inspect the cooling system operation and functionality,
especially possible leaks, flow rate and fluid temperature.
Change the cooling flow direction to flush the cooling
system from sediment possibly accumulated.
Leakage in the cooling
system.
Inspect the cooling system circuit and connections.
Rigid particle inside the
cooling channel of the
electric device.
Try to pulsate coolant to open the channels.
Contact Danfoss representative.
Significant coolant leak
Loose connection in the
coolingsystem.
Inspect, clean and tighten the connections. Replace them if
neccessary.
Broken cooling hose.
Replace the cooling hose.
Electric device does not
work correctly or the
performance is poor
Poor powerline contacts
(high voltage)
Inspect, clean and tighten the contacts.
User Guide
EC-LTS1200-410
Troubleshooting
©
Danfoss | July 2021
BC355449988603en-000201 | 39
