this problem is usually related to the current transformers. watch your amp draw on the panel to see what it is doing during the start up and up to the 2-3 minutes before the fault occurs.
Hello: York YS chiller keeps giving me a POWER FAULT on display. Chiller starts runs for 2-3 minutes then i get this power fault code? Chiller has a ssms model 5557l-46a. I have checked wiring between boards and found no problem that i could see. HELP!!!!!!!
this problem is usually related to the current transformers. watch your amp draw on the panel to see what it is doing during the start up and up to the 2-3 minutes before the fault occurs.
"Right" is not the same as "Wise".
Don't step on my favorite part of the Constitution just to point out your favorite part.
Just because you can measure it, doesn't mean it is important. Just because you can't measure it, doesn't mean it isn't important.
t1 548 t2-551 t3-551 amps at start before shut down t1-134 t2-114 t3-134 amps
From the operation manual:
“LCSSS - POWER FAULT”The Liquid Cooled Solid State Starter Logic/Trigger
Board has detected that the compressor motor current in
one or more phases has decreased to <10% of the FLA
for a minimum of 1 line cycle. This check is inhibited
during the first 4 seconds of SYSTEM RUN and until
the motor current is >25% of the FLA. The chiller will
automatically restart upon completion of SYSTEM
COASTDOWN.
Like, jayguy said, check CTs and associated wiring from CTs to trigger board and BTW tou have a SSS7L-46A (not 555)
How do i check The CTs ?
"Right" is not the same as "Wise".
Don't step on my favorite part of the Constitution just to point out your favorite part.
Just because you can measure it, doesn't mean it is important. Just because you can't measure it, doesn't mean it isn't important.