Sigma C4 u1c 65.0 u1f 102.6

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C4 Manual Rev 7.5.2
7.7.9 QU Quit Controlling
The QU command stops the C4 from controlling. All heating and cooling is turned
off, the blowers are set to the mode determined by setup parameter F15 (Blower
Shut-off Mode). The command syntax is:
QU<CR><LF>
After a QU command, the display will show:
u1c 65.0 (Celsius mode)
u1f 102.6 (Fahrenheit mode)
Note: The C4 can also be commanded to STOP controlling the temperature by
issuing IEEE-488 standard I/O statements ABORTIO, Bus Clear, or Selected
Device Clear.