Overload Protection Function At The Mode Of Heating; Power Turn-Off; Protective Function For Discharge Temperature Of Compressor; You Should - ComfortStar CARAT18-CD Service Manual

7. If the Cooling overload 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
protection 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, transferring mode will not
clear it).

Overload protection function at the mode of heating

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
inner pipe heating overload frequency-limited temperature
the F
slowly raising speed of preventing protection frequency
should exit the slowly raising control.
1. Frequency limited
If T
heating overload frequency-limited temperature
limit the frequency raising of compressor.
2. Reducing frequency at normal speed and stopping machine:
If T
heating overload frequency reducing temperature at normal speed
you should adjust the compressor frequency by reducing 8Hz/90s till the lower limit; After it was running 90s at
the lower limit, if T
heating overload frequency reducing temperature at normal speed
stopping;
3. Reducing frequency at high speed and power turn-off:
If T
heating 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
heating overload frequency reducing temperature at normal speed
stopping;

4. Power turn-off:

If the T
heating overload power turn-off temperature
heating overload frequency-limited temperature
should be allowed to operate.
5. If the overload 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
protection 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, transferring mode will not
clear it).

(3) Protective function for discharge temperature of compressor

1. Starting estimation:
After the compressor stopped working for 180s, if T
hysteresis is 2 ), the machine is allowed to start, otherwise it should not be started, and should be stopped to
treat according to the discharge temperature:
The machine should be stopped or transferred to supply air, the trouble should be cleared immediately, and the
protection times are not counted.
2. Raising the frequency slowly:
During the process of raising frequency, if the
frequency temperature during discharging
protection frequency raising speed
raising control.
3. Frequency limited
If T
Limited frequency temperature during discharging
limit the frequency raising of compressor.
4. Reducing frequency at normal speed and stopping machine:
If T
frequency reducing temperature at normal speed during discharging
you should adjust the compressor frequency by reducing 8Hz/90s till the lower limit; After it was running 90s at
the lower limit, if T
frequency reducing temperature at normal speed during discharging
machine stopping;
; If T
≤T
inner pipe
≤T
inner pipe
and the compressor has been stopped working for 3 minutes, the machine
, the frequency raising speed should be executed according to the
; If T T
Discharge Slowly raising frequency temperature during discharging
≤T
Discharge
t
overload protection times zero clearing time
T
inner pipe heating overload frequency-limited temperature
T
Slowly raising frequency temperature of heating overload
, the frequency raising speed should be executed according to
T
inner pipe Slowly raising frequency temperature of heating overload
T
heating overload frequency reducing temperature at normal speed
≤T T
inner pipe heating overload frequency reducing temperature at high speed
≤T
inner pipe
≤T T
inner pipe heating overload power turn-off temperature
≤T , then Cooling overload protects machine
outer pipe
, then overload protects machine stopping; If T
t
overload protection times zero clearing time
T
Discharge Discharge limited temperature
T
Slowly raising frequency temperature during discharging
T
frequency reducing temperature at normal speed during discharging
≤T T
Discharge frequency reducing temperature at high speed during discharging
≤T
, the times of overload
, then overload protects machine
, the times of overload
(the temperature of
≤T
Discharge
, you should exit the slowly
, you should discharge to protect
Discharge
(the
, you

, you should

,
you should
T
inner pipe
T
Limited
F
Preventing
, you should
,