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I'm an HVAC contractor -Steamfitter, put in a lot of Lochinvar boilers. Never any problems.
Had one sitting in the basement for 4 years.
Just put it in my house took out he muchkin boiler
Having problems, The first fault was going off on Outlet Sensor Fault, made sure no air in the system, Check sensor resistance
they check good, put in a new module (made sense) wrong!
Now getting Delta T high, again checked pumps, checked for air, ohm out sensors.
Now I notice before the boiler even lights my delta T reading is jumping all over the place, 6 to 35 to 12 to 20 -4 yes negative 4
Then the boiler lights within a couple secs, delta T jumps up out of range and locks out the boiler,
I already assume the module, we all know what assume means smiley:
Thanks for any help you may have