That head is way to high for R404. Even if it was a Kiln Tell me more about the system. Why 3 TXV’s, is it a rack system? What type of condenser? What temp are the cooled spaces at?
Sounds like either a TXV is flooding and overcharge. Or you have non condensable’s in the system. That happens often with a incomplete vacuum and recharging with used R404.
What is the compressor and how many amps is it drawing?
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