Starting CP3 fill. LLCV enabled. LLCV set to manual control. LLCV set to 50% open. Fill completed in 1072 seconds. TC B did not register fill. LLCV set back to 19.0% open. Starting CP4 fill. LLCV enabled. LLCV set to manual control. LLCV set to 70% open. Fill completed in 128 seconds. LLCV set back to 37.0% open.
Raised CP3 to 20% open.
Verified that both thermocouples are inserted into CP3 and CP4 exhaust pipes, since TC B of CP3 didn't register fill for the last couple of times.