4-21
Error 320 - Low Pressure Overrange
This indicates that a saturation pressure of greater than 60 PSIA, or equivalent in other
pressure units, was measured by the low range pressure transducer. Transducer
malfunction (either one or both) is likely.
Error 480 - Pressure Transducer Misalignment
The low and high range pressure transducer measurements disagree with each other by
more than 1 PSIA or equivalent in other pressure units, indicating an alignment problem.
The most likely cause is improper calibration or malfunction of one or both pressure
transducers.
Error 512 - Saturation Temperature High/Low limit
This error occurs only in combination with an Over/Underrange Limit. If combined with
error code 16384 Temperature Underrange, the saturation temperature is below -10 °C
(14 °F). If combined with error code -32768 Temperature Overrange, the saturation
temperature is above 90 °C (194 °F). The most likely cause is misalignment or
malfunction of the temperature probe.
Error 1024 - Presaturation Temperature High/Low limit
This error occurs only in combination with an Over/Underrange Limit. If combined with
error code 16384 Temperature Underrange, the presaturator temperature is below -5 °C
(23 °F). If combined with error code -32768 Temperature Overrange, the presaturator
temperature is above 100 °C (212 °F). The most likely cause is misalignment or
malfunction of the temperature probe.
Error 2048 - Expansion Valve Temperature High/Low limit
This error occurs only in combination with an Over/Underrange Limit. If combined with
error code 16384 Temperature Underrange, the expansion valve temperature is below
-10 °C (14 °F). If combined with error code -32768 Temperature Overrange, the
expansion valve temperature is above 100 °C (212 °F). The most likely cause is
misalignment or malfunction of the temperature probe.
Error 4096 - Chamber Temperature High/Low limit
This error occurs only in combination with an Over/Underrange Limit. If combined with
error code 16384 Temperature Underrange, the chamber temperature is below -10 °C (14
°F). If combined with error code -32768 Temperature Overrange, the chamber
temperature is above 100 °C (212 °F). The most likely cause is misalignment or
malfunction of the temperature probe.
Error 8192 - Temperature Reference High/Low limit
The temperature reference resistor indication has deviated significantly from its nominal
value of 0 °C (32 °F). This typically indicates a bad reference resistor, or a
malfunctioning STD-A/D converter board.
Error 16384 - Temperature Underrange
This error never occurs alone. It may only occur in combination with temperature
high/low limits to indicate that the error is a low limit rather than a high limit.
