Complete: 1 System: ICP split heat pump: homeowner said it was not blowing. Found Thermostat working intermittently. Replaced the Tstat. Found fuse blown in the AH. Found a short in the low voltage wire running to outside unit which fried the transformer inside AH. Replaced transformer and placed inline fuse. Repaired short in the outdoor unit. Cycled system and the unit is working great at this time.