Judy,
We to have a electrolux fridge which failed on electrics, took to dealer who replaced the Element , on site it failed again, being the end of october decided to wait until we had the van serviced in March this year,(50 miles round trip) dealer checked said the fridge was working correctly to the required cold temps,we took the van away for 5 days this april guess what on the 4th day the fridge started to warm up again.When we returned home parked the van in the drive connected to the 240 mains supply , placed a thermometer inside the fridge not freezer , set the control to 7 .
for the first 3 days the temp showed +4oC 5th day +10oC 6 the day +13oC, Managed to locate a mobile caravan fitter who is coming to check the fridge, will advise what the results of his testing will reveal, We to think it may be the thermostat.
Roy