Protection plan on the furnace-- big mistake
On the next day, the replacement part arrived, and the second technician came. He didn't have any interest to replace the gas valve. Instead, he spent 1.5 hours trying to find some reason to shutdown the furnace permanently. After he use a camera with long tube searching everywhere in the furnace's heat exchanger, he said that he found a rust on the exchanger. The location is deep inside the heater exchanger which you can't verify by yourself. Anything you can see from your own eyes in the heat exchanger is in a good condition . The Reliance technician didn't use any CO detector to prove that the furnace leak CO gas.
Then this technician shutdown the furnace and even disconnected the internal wires in the furnace. The whole purpose of his work was to make sure that the furnace is shutdown permanently in a cold (-15 degree) winter day . (even though the furnace was partially work before he came).
After that, it is the old story that someone from Reliance tried to sell the overpriced rental or replaced furnace.
Finally, I called other company to replace the furnace. The installer (gas licensed ) told me that he don't see anything wrong on the heat exchanger.
So the money I paid to protect my furnace is actually to give some some one has a chance to enter my home and shutdown my furnace unexpectedly