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    407c has a best chart next to r-22 / if...

    407c has a best chart next to r-22 / if compressor is good change out to POE / If bad compressor find one with POE and same btu not over if a little under is ok.
    422d higher head psi. 407c not a...
  2. Check the head master ( sound like it is open in...

    Check the head master ( sound like it is open in bypass mode) In memphis does not need one so i remove and add a fan control. But up north it a lot colder. Head psi up/ compressor is hot / or txv...
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