Gree Vireo B 12 MBH, Service Manual

Page: 34 / 98

31
7HFKQLFDO,QIRUPDWLRQ
Service Manual
3. Special Functions
Defrosting Control
ķ Conditions for starting defrosting
$IWHUWKHWLPHIRUGHIURVWLQJLVMXGJHGWREHVDWLV¿HGLIWKHWHPSHUDWXUHIRUGHIURVWLQJLVVDWLV¿HGDIWHUGHWHFWLRQVIRUFRQWLQXRXVPLQXWHV
WKHGHIURVWLQJRSHUDWLRQZLOOVWDUW
ĸ &RQGLWLRQVRI¿QLVKLQJGHIURVWLQJ
7KHGHIURVWLQJRSHUDWLRQFDQH[LWZKHQDQ\RIWKHFRQGLWLRQVEHORZLVVDWLV¿HG
Ĺ T
RXWGRRUSLSHWHPSHUDWXUH
•7
RXWGRRUDPELHQWWHPSHUDWXUH
±>7
WHPSHUDWXUHRI¿QLVKLQJGHIURVWLQJ
];
ĺ 7KHFRQWLQXRXVUXQQLQJWLPHRIGHIURVWLQJUHDFKHV>WPD[GHIURVWLQJWLPH@
4. Control Logic
(1) Compressor Control
6WDUW WKH FRPSUHVVRU DIWHU VWDUWLQJ FRROLQJ KHDWLQJ GHKXPLGLI\LQJ RSHUDWLRQV DQG WKH RXWHU IDQV VWDUW IRU V :KHQ WKH PDFKLQH LV
VKXWGRZQ LQ VDIHW\ VWRSV DQG ZKHQ VZLWFKLQJ WR DLUVXSSO\LQJ PRGH WKH FRPSUHVVRU ZLOO VWRS LPPHGLDWHO\ ,Q DOO PRGHV RQFH WKH
FRPSUHVVRU VWDUWV XS LW ZLOO QRW EH DOORZHG WR VWRS XQWLO KDYLQJ UXQ IRU WKH >WPLQ FRPSUHVVRU UXQQLQJ WLPH@ 1RWH LQFOXGLQJ FDVHV RI
VKXWGRZQZKHQWKHWHPSHUDWXUHSRLQWLVUHDFKHGH[FHSWWKHFDVHVUHTXLULQJVWRSSLQJWKHFRPSUHVVRUVXFKDVIDXOWSURWHFWLRQUHPRWH
VKXWGRZQPRGHVZLWFKLQJHWF,QDOOPRGHVRQFHWKHFRPSUHVVRUVWRSVLWZLOOEHDOORZHGEHUHVWDUWDIWHUPLQXWHGHOD\1RWH7KH
LQGRRU XQLWV KDYH D IXQFWLRQ RI SRZHU PHPRU\ WKH PDFKLQH FDQ EH UHVWDUWHG DIWHU UHPRWH VKXWGRZQ DQG SRZHULQJ XS DJDLQ ZLWKRXW
delay).
1. Cooling mode
6WDUWWKHPDFKLQHWRHQWHULQWRFRROLQJRSHUDWLRQIRUFRROLQJWKHFRPSUHVVRULVVZLWFKHGRQ
2. Dehumidifying mode
6DPHDVWKHFRROLQJPRGH
3. Air-supplying mode
7KHFRPSUHVVRULVVZLWFKHGRII
4. Heating mode
6WDUWWKHPDFKLQHWRHQWHULQWRKHDWLQJRSHUDWLRQIRUKHDWLQJWKHFRPSUHVVRULVVZLWFKHGRQ
(2) Defrosting:
D'HIURVWLQJVWDUWVWKHFRPSUHVVRULVVKXWGRZQDQGUHVWDUWVLWDIWHUVHFRQGGHOD\
E'HIURVWLQJHQGVWKHFRPSUHVVRUVWRSVWKHQVWDUWVLWDIWHUVHFRQGGHOD\
(2) Outer Fans Control
Notes:
2QO\WKHRXWHUIDQVUXQIRUDWOHDVWVLQHDFKDLUÀRZVSHHGFDQWKHDLUÀRZEHVZLWFKHG
$IWHUWKHRXWHUIDQVUXQFRPSXOVLYHO\LQKLJKVSHHGIRUVZKHQWKHPDFKLQHVWDUWVXSFRQWUROWKHDLUÀRZDFFRUGLQJWRWKHORJLF
$IWHUUHPRWHVKXWGRZQVDIHW\VWRSVDQGZKHQWKHPDFKLQHVWRSVDIWHUUHDFKLQJWKHWHPSHUDWXUHSRLQWDVZHOODVDIWHUWKHFRPSUHVVRU
VWRSVH[WHQGPLQXWHWKHRXWHUIDQVZLOOVWRS'XULQJWKHSHULRGLQWKHPLQXWHWKHDLUÀRZRIRXWHUIDQVFDQEHFKDQJHGDFFRUGLQJWR
WKHRXWGRRUDPELHQWWHPSHUDWXUHFKDQJHV:KHQUXQQLQJZLWKIRUFHWKHRXWGRRUIDQVVKDOOUXQLQWKHKLJKHVWDLUÀRZ
(3) 4-way valve control
7KHZD\YDOYHFRQWUROXQGHUWKHPRGHVRI&RROLQJGHKXPLGL¿FDWLRQDQGVXSSO\LQJDLUFORVLQJ
7KHVWDWXVRIZD\YDOYHFRQWUROXQGHUWKHKHDWLQJPRGHJHWWLQJSRZHU
ZD\YDOYHSRZHUFRQWUROXQGHUKHDWLQJPRGH
D6WDUWVWKHPDFKLQHXQGHUKHDWLQJPRGHWKHZD\YDOYHZLOOJHWSRZHULPPHGLDWHO\
ZD\YDOYHSRZHUWXUQRIIFRQWUROXQGHUKHDWLQJPRGH
D:KHQ\RXVKRXOGWXUQRIIWKHSRZHURUVZLWFKWRRWKHUPRGHXQGHUKHDWLQJPRGHWKHSRZHURIZD\YDOYHZLOOEHFXWDIWHUPLQXWHV
RIWKHFRPSUHVVRUVWRSSHG
E:KHQDOONLQGVRISURWHFWLRQVWRSVWKHSRZHURIZD\YDOYHZLOOEHFXWDIWHUGHOD\LQJPLQXWHV
'HIURVWLQJFRQWUROXQGHUKHDWLQJPRGH
D'HIURVWLQJEHJLQV7KHSRZHURIZD\YDOYHZLOOEHFXWDIWHUVRIHQWHULQJLQWRWKHGHIURVWLQJ
compressor.
E'HIURVWLQJVWRSV7KHZD\YDOYHZLOOJHWSRZHUDIWHUVRIH[LWLQJWKHGHIURVWLQJFRPSUHVVRU
(4) Evaporator frozen-preventing protection function
$WWKHPRGHRI&RROLQJGHKXPLGLI\LQJ
(YDSRUDWRUIUR]HQSUHYHQWLQJSURWHFWLRQIXQFWLRQLVDOORZHGWREHJLQDIWHUPLQRIVWDUWLQJWKHFRPSUHVVRU