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refrigerating when the temperature is under ¡setting temperature¡, the controller
begins to heat when the temperature of the temperature sensor is under ¡setting
temperature
－
Auto mode temperature difference¡, and it stops heating when the
temperature is over ¡setting temperature¡.(Attention: when set F17<F12, F17=F12
admitted)
Compressor delay time
The compressor delay time is set by F21, for example, 3 minutes. The controller
contains a ¡compress or halt calculagraph ¡, and it begins to time when compressor
stops, the program first check the calculagraph before booting the compressor next
time, the program will immediately boot the compressor if the calculagraph reach 3
minutes ,if the calculagraph doesn¡t reach 3 minutes ,it will boot again when the
calculagraph reaches 3 minutes. Thus you can ensure that the boot alternation is over
3 minutes after halt, so it can prevent to breaking the compressor as a result of
frequent boot. In addition, the controller doesn¡t boot the compressor within 3 minutes
after turning on the power supply, thus the compressor can also be protected in the
state of power cut and then power on.
Auto defrosting principle
The controller will supervise the temperature of outdoor machine when heating
normally, and decide whether need to defrost according to the time of the outdoor
machine in the continuous low temperature state. In other words, the defrosting
calculagraph begins to time when the outdoor machine temperature is lower than
¡defrost start temperature¡, and turns on the defrosting when the value of time
reaches ¡defrost start time¡. The calculagraph will be cleared if the outdoor machine
temperature is higher than ¡defrost start temperature¡ when timing, and it begins to
time again when the outdoor machine temperature is lower than ¡defrost start
temperature¡ next time. In other words, the value of defrosting calculagraph shows
the continuous low temperature time of the outdoor machine.
The controller can check the defrosting effect with the temperature of outdoor
machine, if the temperature of outdoor machine goes up to the ¡defrost end
temperature¡, the controller will turn off the function of defrosting. If the defrosting time
is above ¡max defrost time¡, the controller will turn off defrosting forcibly.
