As soon as I turn on the burner it lights up fine for about 5 seconds then turns off like its running out of gas and after I try to re light the pilot it takes about 5 mins to get the pilot back on.
The water tank model is 42V-50 at 11/2004 The controller is: Robertshaw 110-326 It's hard to put pilot aa I said wait for 5 min t0 10.min. I did a test turn pilot and it was last for 10 to 15 min then went out. The exhaust is fine as I feel a drift, also it was same configuration for last 2 years. All storage room is never been changed. I can buy a new heater for 1700 with install but I wanted to try to fix it, I did not wanted to thru away because on controller. I cleaned the thermocouple near burner not helped
