-TechManual_SRK05,09,12CR-S,CRR-S,CRP-S
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
(9) Protective control function<br />
(a)<br />
(b)<br />
(c)<br />
(d)<br />
(e)<br />
Frost prevention for indoor heat exchanger (During cooling or dehumidifying)<br />
(i) Operating conditions<br />
1) Indoor heat exchanger temperature (Th2) is lower than 2.5ºC.<br />
2) 3 minutes elapsed after the start of operation.<br />
(ii) Detail of frost prevention operation<br />
Compressor<br />
Indoor fan<br />
Outdoor fan<br />
OFF<br />
Protects the fan tap just before frost prevention control.<br />
Depending on the stop mode<br />
(iii) Reset condition: Indoor heat exchanger temperature (Th2) is higher than 15ºC.<br />
Indoor fan motor protection<br />
When the airconditioner is operating and the indoor fan motor is turned ON, if the indoor fan motor has operated at 300 min -1 or<br />
under for more than 30 seconds, the unit enters first in the stop mode and then stops the entire system.<br />
TIMER light illuminates simultaneously and the RUN light flashing 6-time at each 8-second.<br />
3 minutes forced operation<br />
When the compressor begins operating the thermal operation is not effective for 3 minutes, so operation continues as is in the<br />
operation mode. (After 3 minutes has passed the thermal operation is effective.)<br />
However, stopping the compressor via a stop signal or protection control has priority.<br />
Abnormality of outdoor unit<br />
After the compressor run 5 minutes, and the indoor heat exchanger temperature more than 25ºC continuously more than 40 minutes,<br />
then the abnormality stop occurs.<br />
Sensor disconnection (room temperature, indoor heat exchanger)<br />
(i)<br />
(ii)<br />
Room temperature sensor<br />
If the temperature detected by the room temperature sensor is – 45ºC or lower, continuously for 15 seconds or longer, then<br />
operation is stopped, an error indication is displayed. (RUN light: 2-time flash, TIMER light: ON)<br />
Indoor heat exchanger temperature sensor<br />
If the temperature detected by the indoor heat exchanger temperature sensor is –28ºC or lower, continuously for 15 seconds<br />
or longer, then operation is stopped, an error indication is displayed.<br />
(RUN light : 1-time flash, TIMER light : ON)<br />
- 61 - '15 • SRK-T-171
Change language