Enertech VS Series - Refrigeration Troubleshooting; Superheat;Subcooling Conditions

72
Enertech Global IOM, VS/VT Models, Rev A
Refrigeration Troubleshooting
Condition Mode
Discharge
Pressure
Suction
Pressure
Superheat Subcooling Air TD
Water
TD
Compressor
Amps
Under Charge
Heat Low Low High Low Low Low Low
Cool Low Low High Low Low Low Low
Over Charge
Heat High High/Normal Normal High High Normal High
Cool High High/Normal Normal High Normal High High
Low Air Flow
Heat High High/Normal Normal High/Normal High Low High
Cool Low Low/Normal Low Normal High Low High/Normal
Low Source
Water Flow
Heat Low Low/Normal Low Normal High Low High/Normal
Cool High High/Normal Normal High/Normal High Low High
Low Load
Water Flow
Heat High High/Normal Normal High/Normal High Low High
Cool Low Low/Normal Low Normal High Low High/Normal
Restricted TXV
Heat High Low High High Low Low Low
Cool High Low High High Low Low Low
TXV Stuck Open
Heat Low High/Normal Low Low Low Low High
Cool Low High/Normal Low Low Low Low High
Inadequate
Compression
Heat Low High High/Normal Low/Normal Low Low Low
Cool Low High High/Normal Low/Normal Low Low Low
Superheat Subcooling Condition
Normal Normal Normal operation
Normal High Overcharged
High Low Undercharged
High High Restriction or TXV is stuck almost closed
Low Low TXV is stuck open
Superheat/Subcooling Conditions
Section 12: Troubleshooting