Fault code

[Robert Mielenz]

I have a Norcold 1200 LRIm refrigerator. Two nights ago during a freezing spell the error codes showed "dc" then "eR". When it warmed up the error codes stopped and the refrigerator has worked normally. Outside temp was in mid 20's. I can't find those codes in my manuals, can anyone identify the codes and possibly explain the reason the refer. acted up?
Bob 541 253-6240

[LaMonte Monnell]

i have the same frig.....I think the dc code is low voltage and the er is error....once voltage increased went to normal

[Robert Mielenz]

Batteries are new (5 months) I'm plugged into 50 amps and inverter shows float charge. I don't understand the low voltage issue.  dc makes sense.