Starting Estimation; Raising The Frequency Slowly; Frequency Limited; Reducing Frequency At Normal Speed - ComfortStar CARAT18-CD Service Manual

1. Starting estimation:

After the compressor stopped working for 180s, if T
temperature of hysteresis is 2 ), the machine is only allowed to start for operating, otherwise it should not be
started, and should be stopped to treat according to the frozen-preventing protection:
Clear the trouble under the mode of power turn-off / heating, and the protection times are not counted.

2. Raising the frequency slowly:

During the process of raising frequency, if the
, the frequency-raising speed should be executed according to the F
frequency-raising temperature
; If T
slow raising speed frozen-preventing slowly raising frequency temperature

3. Frequency limited

T
frozen-preventing normal speed frequency-reducing temperature
limit the frequency raising of compressor.

4. Reducing frequency at normal speed:

If T
frozen-preventing high speed frequency-reducing temperature
you should adjust the compressor frequency by reducing 8Hz/90s till the lower limit;
5. Reducing frequency at high speed:
If T
frozen-preventing power turn-off temperature
the compressor frequency by reducing 30Hz/90s till the lower limit;

6. Power turn-off:

If the T T
inner pipe frozen-preventing power turn-off temperature
frozen-preventing frequency-limited temperature
whole machine should be allowed to operate.
7. If the frozen-preventing protection power turn-off continuously occurs for six times, it should not be resumed
automatically, and you should press the ON/OFF button to resume if the fault keeps on. During the process of
running, if the running time of compressor exceeds the
of frozen-preventing power turn-off should be cleared to recount. The mode of stopping the machine or
transferring to supply air will clear the trouble times immediately (if the trouble can not be resumed, mode
transferring will not clear it).
(2) Overload protection function
Overload protection function at the mode of Cooling and dehumidifying
1. Starting estimation:
After the compressor stopped working for 180s, if T
temperature of hysteresis is 2 ), the machine is allowed to start, otherwise it should not be started, and should
be stopped to treat according to the overload protection:
Clear the trouble at the mode of power turn-off / heating, and the protection times are not counted.
2. Raising the frequency slowly:
During the raising process of pipe temperature and frequency, if the
≤T T
outer pipe Cooling overload frequency-limited temperature
the F
slowly raising speed of preventing protection frequency
should exit the slowly raising control.
3. Frequency limited
If T
Cooling overload frequency-limited temperature
limit the frequency raising of compressor.
4. Reducing frequency at normal speed and power turn-off:
If T
Cooling overload frequency reducing temperature at high speed
adjust the compressor frequency by reducing 8Hz/90s till the lower limit; After it was running 90s at the lower limit,
if T
Cooling overload frequency reducing temperature at normal speed
5. Reducing frequency at high speed and stop machine:
If T
Cooling overload frequency reducing temperature at high speed
adjust the compressor frequency by reducing 30Hz/90s till the lower limit; After it was running 90s at the lower
limit, if T
Cooling overload frequency reducing temperature at normal speed
stopping;
6. Power turn-off:
If the T
Cooling overload power turn-off temperature
T
pipe Cooling overload frequency-limited temperature
machine should be allowed to operate.
inner pipe
T
frozen-preventing frequency-limited temperature
≤T
≤T
inner pipe
≤T
inner pipe
≤T T
inner pipe frozen-preventing high speed frequency-reducing temperature
, then frozen-preventing protect to stop the machine; If
T , and the compressor has stopped working for 3 minutes, the
inner pipe
t
evaporator frozen-preventing protection times zero clearing time
outer pipe
, the frequency raising speed should be executed according to
; If T
outer pipe
≤T T
outer pipe Cooling overload frequency reducing temperature at normal speed
≤T
outer pipe
≤T
outer pipe
≤T
outer pipe
≤T
≤T , then Cooling overload protects machine stopping; If T
outer pipe
and the compressor has been stopped working for 3 minutes, the
T
frozen-preventing frequency-limited temperature
≤T
, you should exit the slowly raising control.
inner pipe
T
frozen-preventing frequency-limited temperature
T
frozen-preventing normal speed frequency-reducing temperature
T
Cooling overload frequency-limited temperature
T
Slowly raising frequency temperature of Cooling overload
T
Slowly raising frequency temperature of Cooling overload
T
Cooling overload power turn-off temperature
, then Cooling overload protects machine stopping;
T
Cooling overload power turn-off temperature
, then Cooling overload protects machine
outer pipe
(the
T
inner pipe frozen-preventing
preventing protection frequency
, you should
you should adjust
T
, the times
(the
, you
, you should
, you should
you should
outer
,