Phase wiring 2 on the JULABO FPW91 Chiller

In this video, Bruce Troutman, head of technical service for JULABO USA, discusses phase protection and phase wiring on the JULABO FPW91 chiller. Bruce explains what to do when everything seems to be running correctly on the chiller except the compressor. First, make sure the circulator head is plugged in and everything is lighting up correctly. Then, listen to see if you can hear the circulator running and a relay click on the back of the unit. Also, check to see if you have an E21 error code. If all this looks good but the compressor isn’t working, you may need to check the phase wiring. Bruce demonstrates how to turn off the power to the machine and the electrical box and switch the positions on the phase wiring. This easy fix should solve your problem and your compressor should come back on. If you have any questions, please call or send us a message, and remember safety FIRST! If you need us, we’re here to walk you through it.