MILLER WELDER AC CURRENT TRIPS UNDER LOAD
I have a miller big blue 300p, when i use the ac outlets it gives out current but after 1 minute it trips out leaving the outlets with no current. I turn off the machine then start it again and it does the same thing, I get an HL.P code 23 it says one of the scr output rectifiers has failed. I ordered 2 rectifiers from miller i installed them and tested them in all the different spots my removing two old ones and replacing it with the new ones but i still keep having the same problem as i stated before. my question is should i buy the remaining rectifiers and replace all of them. don't know what else to do. will appreciate any ideas .
Welding Tools - Miller
Answers & Comments
Rectification is used to change AC to DC.... DC is used for welding (these would be large rectifiers) and to excite the rotor in the alternator (much smaller and probably part of the control circuit). If when you weld in AC the same error occurs, check the voltage regulation control circuit.
If your welder is shorting inside and giving electroshock , it may be covered by Miller as factory defect, providing that you have not disassembled the unit by yourself.
Give them a call at
1-800-4-A-MILLER
Check out for fuse getting blown out or at any loose connection at the power supplying unit.
Hi
Try replacing all the output rectifiers and also check the transformer windings.
Also check for the Self-resetting Protection Circuit, it needs to be checked.