View Full Version : Carrier air cooled scroll water chiller ( 30RA -160 )

abdullah y
02-08-2012, 12:07 AM
Hi every body

Please i need your help all, i am facing problem in one carrier chiller 30RA-160 , this chiller showen fault code no.56 which i have not in my carrier catalog , so please inform me what the meaning of this fault & how remove it.


The Viking
02-08-2012, 12:32 AM
In my book:

ACTION TAKE BY CONTROL = Comprssor shut off
PROBABLE CAUSE = High-Pressure Swicth Trip or High Discharge gas temperature swicth Trip, or Compressor ground current >2 5 amp or Compressor board relay on.
When it is not supposed to be on, wiring error between electronic control and Compressorprotection module



The Viking
02-08-2012, 12:35 AM
High pressure switch,
Is the condensor coils clean and all the fans running?
Manual reset on HP switch and reset controls.

High discharge temperature,
Has it lost some of the refrigerant? Is there a leak?
Reset controls.

Compressor ground current,
Is the compressor down to earth?
Major fault, replace compressor and reset controls.



abdullah y
02-08-2012, 12:58 AM
Thanks viking for your reply
Actually the condenser of the chiller was so dirty & no body care about it ( that what i have seen when i visit to check up the chiller first time) & the high pressure switch was trip, but after cleaning the high pressure switch still tripping & now new falut showen code no.1 & again fault no.56 ( what i have to do ?? )