78 Part Number STH039 8/13
FINAL ANALYSIS
The column with the highest number of check marks
identifies the refrigeration problem.
Column 1 – Hot Gas Valve Leaking
A leaking hot gas valve must be replaced.
Column 2 – Low Charge/TXV Starving
Normally, a starving expansion valve only affects the
freeze cycle temperatures, not the harvest cycle
temperatures. A low refrigerant charge normally
affects both temperatures.
Column 3 – TXV Flooding
A loose or improperly mounted expansion valve bulb
causes the expansion valve to flood. Check bulb
mounting, insulation, etc., before changing the valve.
Column 4 – Compressor
Replace the compressor and start components. To
receive warranty credit, the compressor ports must be
properly sealed by crimping and soldering them
closed. Old start components must be returned with
the faulty compressor.
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