2008 Discovery. I have two AC units, the front is at 1500, and the back 1350.The back has begun to spike during startup. If I am on 50 amp service I cannot see this and nothing goes wrong. On 30 am...
How long does the back unit compressor stay off before restarting, as thermostats age sometimes they lose their differential settings. Another possibility is the area where the air blows out isn't sealed well from the air inlet where the filters are and the cold air is blowing on the thermostat capillary tube causing it to short cycle.