Troubleshooting - Condensing System - Structural Concepts Harmony HMG2642R.4439 Installation & Operating Manual

TROUBLESHOOTING - CONDENSING SYSTEM (QUALIFIED SERVICE TECHNICIANS ONLY)
CONDITION
Head Pressure Too High
Head Pressure Too Low
TROUBLESHOOTING
Check that the Condensing Coil is not dirty or covered.
Check that Condensing Fans are working.
Check that the refrigeration system is not overcharged.
Check that case is free of non-condensables.
Check that the Liquid Line Drier Filter is not plugged.
Check Set Point temperature; it may be adjusted too high.
Check System Operating temperatures.
Check that Store Ambient temperature isn't above maximum
allowed. See Overview and Warnings Section.
Check that Refrigerant Charge isn't too low.
Check that Suction Pressure isn't too low.
Check to verify that Compressor Valves aren't faulty.
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