New tow bar and fridge electrics

Scottie2
Scottie2 Forum Participant Posts: 226
edited October 2015 in Caravans #1

new tow bar fitted to my 2015 Mondeo, complete with 13 pin electrics. Got car home from professional fitters and connected up car to caravan which is 2012 Swift Challenger Sport 524 SR with ATC.....Everything working ok inc ATC, road lights etc etc....However,
when testing fridge for 12 volt operation, the car is started and the blue light on front of fridge lights up and stays constant on, but only for 10 seconds then starts flashing.....The internal light stays constant when fridge door opens so no problem with
that....Tried shutting down the fridge,disconnecting the 13 pin and tried several times but same result each time.....Phoned the fitters and started by saying a fuse may need to be updated, also that fridge relay he fitted in boot of the car may need "tweaked"..
Apparently he has no equipment at his workshops which can simulate "load" so the relay may be the problem but as he cannot fit a visit for me to take car to him (an hour each way) , can anyone confirm a course of action for me to try sorting the problem myself.