Delta MH300 Series - Page 750

Chapter 14 Fault CodesMH300
14-23
ID No. Display Fault Name Description
18
IGBT temperature
detection failure
(tH1o)
IGBT hardware failure in temperature detection
Action and Reset
Action condition NTC broken or wiring failure
Action time
When the IGBT temperature is higher than the protection
level, and
detection time exceeds 100 ms, the tH1o protection activates.
Fault treatment parameter N/A
Reset method Manual reset
Reset condition Immediately reset
Record Yes
Cause Corrective Actions
Hardware failure
Wait for 10 minutes, and then cycle the power. Check if tH1o protection
still exists. If yes, return to the factory for repair.