walk in freezer not going into defrost

[royd2]

idk somehow reading hotter temp than actual

[ar_hvac_man]

You need to follow those steps i listed then worry about wether your heaters are coming on or not.

[royd2]

ok thanks thats what we will try

[supertek65]

[royd2]

i will post back tomorrow, thanks again

[jpsmith1cm]

Compressor shutdown doesnt initiate defrost, your clock does. Your compressor could continue to run while your heaters are energized.

This is not necessarily true.

Many times, the electrical circuit to the condensing unit is only large enough to run the compressor OR the heaters, but not both.

Thus, there is often an interlock so that the compressor must cycle off before the defrost heater contactor can energize.

[ar_hvac_man]

I agree. I dont see them often but there are systems set up and wired that way. No offense to the OP but hes obviously lost(we all were at some point) so I posted what I felt he needed to tackle first.

[supertek65]

JP!!!!!!

JP mod!!!!!

can we do something for breast cancer on this site????????????????????????????????????????

[royd2]

thanks guys.I was lost. we fixed it. we changed the time clock and the contactor it was pitted pretty bad and we also changed the defrost terminaion switch unit running good for now

[royd2]

idk why he wanted to change the dt switch he didnt even test it but if it were bad it would not stop from defrosting would it ? it would just stop from terminating at temo right?

[ryan1088]

defrost timer de-energizes ll solenoid valve and then compressor will run until pressure switch opens.

Hold on a second, you do refer work too??

[supertek65]

LMAO!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Hold on a second, you do refer work too??

[supertek65]

LMAO!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Hold on a second, you do refer work too??