,QVWDOODWLRQDQG0DLQWHQDQFH
6HUYLFH0DQXDO
-XGJHPHQWE\)ODVKLQJ/('RI2XWGRRU
12
1DPHRIPDOIXQFWLRQ
2XWGRRU'LVSOD\(UURU&RGH
6\VWHPKLJKSUHVVXUHSURWHFWLRQ
(
$QWLIUHH]LQJSURWHFWLRQ
(
6\VWHPORZSUHVVXUHSURWHFWLRQ
(
&RPSUHVVRUH[KDXVWKLJKWHPSHUDWXUHSURWHFWLRQ
(
&RPPXQLFDWLRQIDLOXUHEHWZHHQLQGRRUXQLWDQGRXWGRRUXQLW
(
2XWGRRUWXEHVHQVRURSHQRUVKRUWFLUFXLW
)
2XWGRRUDPELHQWVHQVRURSHQRUVKRUWFLUFXLW
)
([KDXVWVHQVRURSHQRUVKRUWFLUFXLW
)
2XWGRRU'&IDQPRWRUPDOIXQFWLRQ
+
2YHUFRPSUHVVRUSKDVHFXUUHQWSURWHFWLRQ
3
&RPSUHVVRURYHUORDGSURWHFWLRQ
+
,30SURWHFWLRQ
+
3)&SURWHFWLRQ
+&
&RPSUHVVRUORVVVWHSSURWHFWLRQ
+
6WDUWXSIDLOXUH
/F
&DSDFLWRUFKDUJHPDOIXQFWLRQ
38
,30VHQVRUFLUFXLWPDOIXQFWLRQ
3
,30KLJKWHPSHUDWXUHSURWHFWLRQ
3
2YHUYROWDJHSURWHFWLRQIRU31
3+
/RZ31YROWDJHSURWHFWLRQ
3/
&XUUHQW'HWHFW6HQVRUPDOIXQFWLRQ
3F
,300RGXOH5HVHW
3
3KDVH/RVV
/G
'ULYHU0RGXOH&RPPXQLFDWLRQ)DLO
3
&KDUJLQJ&LUFXLW0DOIXQFWLRQ
38
1. E1: High pressure protection
Malfunction description: The pressure of ODU high pressure side is too high.
Main check points:
a. Is the system pressure is normal;
b. Is the pressure switch is normal;
c. If above two issues are normal, the mainboard circuit is with malfunction, please replace mainboard.
2. E2: Freeze protection
Malfunction description: Too low tube temperature of IDU under cooling mode.
Main check point:
a. Check if the IDU fan speed is normal, if the air inlet/outlet is smooth;
b. Check if the IDU, ODU heat exchanger is too dirty that affect the heat exchanging effect.
Pressure switch terminal of high Pressure
