Water Heater Explodes

by Dave
(Mich.)

Sometimes, our water heater explodes when re-lighting during usage. This has never happened at first start - up when cold.

Of course, this doesn't happen on, as when the dealers tech. is trying to figure out the problem.
Has anyone else had this?

Water Heater

Plenty of propane, heater works but the hot water heater only comes on sometimes. Any ideas as to what the problem may be?