Here are some key points about neuropathy. More detail and supporting information is in the main article. 1  Neuropathy is a common condition. 2  Neuropathy is a complication of a number of different medical conditions. 3  Three types of nerve can be involved; autonomic nerves, motor nerves and sensory nerves. 4  Sometimes single nerves, or nerve sets are affected.
If you never remove the scale from a water heater tank the clanking or cracking noise heard at the water heater during operation may eventually cease when the scale solidifies, no longer trapping hot water and interfering with its movement upwards in the water tank.
Sizzling or Rumbling Sounds. An A.O. Smith hot water heater that talks back with sizzling or rumbling sounds could have sediment buildup inside the tank. Attach a hose to the drain valve and lead it outside. Turn off the pilot light and gas feed line while draining and flushing the tank.