You could be right. I just looked at it and from what I can see up in the fan the evaporator coils are completely iced over. It has a mechanical time clock defrost timer. I just advanced it to a defrost cycle and the compressor kicked off. I will see if it completes a defrost cycle and/or if the timer is advancing on its own. I suspect it might be bad.
Sent from my iPhone > On Jul 22, 2023, at 10:19 AM, Allan Streib <astr...@fastmail.fm> wrote: > > It should go through a defrost cycle periodically. Perhaps the heating > element for that is bad, or a relay or timer... ? > >> On Sat, Jul 22, 2023, at 09:08, Kaleb Striplin via Mercedes wrote: >> Anyone know anything about commercial freezers? Wife has a true at the >> bakery that the compressor is a big old heavy duty thing built like a >> 240D. When we had it at the house it seemed to run non stop. Long story >> short the thermostat was bad. Replaced that and it seemed to work for a >> while but then would just barely get to freezing. Took it to the >> bakery. One day wife plugs it in and lo and behold it gets down to -10. >> At some point later it’s now struggling to get to freezing or just >> above. I told her she needs to have it serviced, perhaps it’s low on >> refrigerant. It runs on r404a. I’m wondering if it cools for a while >> then maybe ices over due to low charge? From some quick research it >> appears it just uses regular manifold gauge connections like r12 >> perhaps. >> >> I see I can get r404a to try and top it off. High and low side pressure >> specs on on a label in the freezer. I have then found that it looks >> like r290 is the supposed new environmental friendly replacement. I >> have also read it looks like might be able to use r134 in place of 404? >> Anyone know? If that is the case would the oil be the same? I guess I >> could “recover” whatever 404 is in there then charge with 134a. >> >> >> >> Sent from my iPhone >> >> _______________________________________ >> http://www.okiebenz.com >> >> To search list archives http://www.okiebenz.com/archive/ >> >> To Unsubscribe or change delivery options go to: >> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
