Diagnostic system not heating. I found there was no high voltage going to the air handler so the system would not come on. The generator load shed module is faulty and was interrupting the high voltage going to the air handler. I unwired and bypassed the generator load shed module to get the system up and running. Need to call Mathers Electric 576-2342 to replace the contactor in the generator load shed module. The system is now up and running and heating properly at this time.