19
TROUBLESHOOTING - CONDENSING SYSTEM (QUALIFIED SERVICE TECHNICIANS ONLY)
CONDITION
TROUBLESHOOTING
Head Pressure Too High
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.
Head Pressure Too Low
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.
