View Full Version : johnson controls on walk in freezer

17-04-2014, 10:48 AM
Client complaint ice on the floor in walking freezer, got to site Frozen droplets on ceiling and ice on floor defrost cycle obviously condensing and dripping onto floor, what I want to do is check the defrost intervals, temperature termination setpoint etc to identify problem but I cannot find how to access parameters no where anybody know
It's a cr-nt150-1 module


install monkey
17-04-2014, 07:34 PM
click on link for manual:cool:

install monkey
17-04-2014, 07:37 PM
oh lower your defrost termination temp and have a 1-2 min drain time/dripping time, also dont start your evap fan till the evap coil is about 5 deg

20-04-2014, 08:49 PM
thanks for the reply, I already have this manual but it does not actually tell me how to actually access the parameters im at a dead end until I can do that

install monkey
20-04-2014, 10:26 PM
you tried holding the set button in for about 10 seconds?

install monkey
20-04-2014, 10:48 PM
hold enter to programming functions for 10 secs and hy will show up(hysteris)

07-07-2014, 02:37 PM
throw it into the bin and put a dixel/carel or the like onto it.

they are a mega pita to navigate and get into and even harder to explain to someone over the phone compared to others.