Arrives and the customer stated the thermostat display was acting up. The customer said he only had 12v to r and c at the thermostat. Found the ewc board flashing the green lights with 24v of power and I had 24v to the thermostat. Replaced the ewc board and the thermostat. Tested the system and found the blower motor running for 2-4 seconds then turning off and not coming back on. Went over the issue with tech support and found that the blower motor was bad. There must have been a short that started at the ewc board to short multiple components at once. Need to get the customer pricing and availability on the blower motor.