SERVICE CALL: upon arrival homeowner stated the second floor hvac system is not working at all plus the smart thermostat ecobee is completely blank. After complete troubleshooting I found the indoor 40 Va transformer was burnt out. Homeowner approved repairs and replaced and install new 40 Va transformer plus install new in line 3 amp fuse at transformer to Protect new transformer test heat and cooling mode plus test emergency heat mode. Recommend routine maintenance plus recommend extra safety’s switches to prevent any water damage from clogged drain line. Homeowner is aware of the conditions of the equipment. After final Inspection system is working ok at this moment. Thanks for choosing Te certified.