Troubleshooting - Danfoss EC-LTS1200-410 User Manual

User Guide
EC-LTS1200-410

Troubleshooting

© Danfoss | July 2021
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
Electric device Cooling system failure.
overheating
Leakage in the cooling
system.
Rigid particle inside the
cooling channel of the
electric device.
Significant coolant leak Loose connection in the
coolingsystem.
Broken cooling hose.
Electric device does not Poor powerline contacts
work correctly or the (high voltage)
performance is poor
Action
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.
Inspect the cooling system circuit and connections.
Try to pulsate coolant to open the channels.
Contact Danfoss representative.
Inspect, clean and tighten the connections. Replace them if
neccessary.
Replace the cooling hose.
Inspect, clean and tighten the contacts.
BC355449988603en-000201 | 39