INSTALLATION AND MAINTENANCE TROUBLESHOOTING Content: 1.1 Error Code List 1.2 Troubleshooting for Main Malfunction 1.
0DLQWHQDQFH (UURU &RGH /LVW 0DOIXQFWLRQ GLVSOD\ UHTXLUHPHQW :KHQ WKHUH DUH VHYHUDO PDOIXQFWLRQV WKH\ ZLOO EH GLVSOD\HG FLUFXODUO\ 0DOIXQFWLRQ GLVSOD\ PHWKRG +DUGZDUH PDOIXQFWLRQ LPPHGLDWH GLVSOD\ UHIHU WR ³HUURU FRGH OLVW´ 2SHUDWLRQ VWDWH LPPHGLDWH GLVSOD\ UHIHU WR ³HUURU FRGH OLVW´ 2WKHU PDOIXQFWLRQV LW LV GLVSOD\HG DIWHU WKH FRPSUHVVRU VWRSV IRU V UHIHU WR ³HUURU FRGH OLVW´ 1RWH ZKHQ WKH FRPSUHVVRU LV UHVWDUWHG WKH PDOIXQFWLRQ GLVSOD\ GHOD\ WLPH V LV FOHDUHG
(UURU &RGH /LVW Display Method of Indoor Unit NO. 1 2 3 Name E1 Antifreezing protection E2 In defect of refrigerant 4 5 Overcurrent protection 6 Communication Malfunction 7 High temperature resistant protection 8 EEPROM malfunction 9 Limit/ decrease frequency due to high temperature of module Malfunction protection of jumper cap Unit Indicator has 3 kinds of display status and during Indicator Display (during Dual-8 blinking, ON 0.5s and OFF blinking, ON 0.5s and OFF Code 0.5s) 0.
(UURU &RGH /LVW Display Method of Indoor Unit NO. 11 12 Malfunction Name Gathering refrigerant Indoor ambient temperature sensor is open/short circuited Display Method of Outdoor Unit Indicator has 3 kinds of display status and during blinking, ON 0.5s and OFF 0.5s Indicator Display (during Dual-8 blinking, ON 0.5s and OFF Code 0.
(UURU &RGH /LVW Display Method of Indoor Unit NO. Malfunction Name Indicator Display (during Dual-8 blinking, ON 0.5s and OFF Code 0.5s) Display Power Cool Heating Display Method of Outdoor Unit Indicator has 3 kinds of display status and during blinking, ON 0.5s and OFF 0.
(UURU &RGH /LVW Display Method of Indoor Unit NO. Malfunction Name Indicator Display (during Dual-8 blinking, ON 0.5s and OFF Code 0.5s) Display 26 Compressor intermediate frequence in P3 test state 27 28 Overcurrent protection of phase current for compressor Charging malfunction of capacitor P5 Display Method of Outdoor Unit Indicator has 3 kinds of display status and during blinking, ON 0.
(UURU &RGH /LVW Display Method of Indoor Unit Indicator Display (during NO. Malfunction Name Dual-8 blinking, ON 0.5s and OFF Code 0.5s) Display Power Cool Heating Display Method of Outdoor Unit Indicator has 3 kinds of display status and during blinking, ON 0.5s and OFF 0.
(UURU &RGH /LVW Display Method of Indoor Unit Indicator Display (during NO. Malfunction Name 44 Malfunction of phase current detection circuit for compressor 45 Malfunction of voltage dropping for DC bus-bar Display Method of Outdoor Unit Indicator has 3 kinds of display status and during Dual-8 blinking, ON 0.5s and OFF blinking, ON 0.5s and OFF Code 0.5s) 0.
(UURU &RGH /LVW Display Method of Indoor Unit Indicator Display (during NO. Malfunction Name Display Method of Outdoor Unit Indicator has 3 kinds of display status and during blinking, ON Dual-8 blinking, ON 0.5s and OFF 0.5s and OFF 0.5s Code 0.5s) Cool Heating Yellow Red Green Display Power Indicator Indicator Indicator Indicator Indicator Indicator Possible Causes OFF 0.
7URXEOHVKRRWLQJ IRU 0DLQ 0DOIXQFWLRQ 0DOIXQFWLRQ RI 7HPSHUDWXUH 6HQVRU ) ) Troubleshooting for F1,F2 malfunction Is the wiring terminal between the temperature sensor and the controller loosened or poorly contacted? yes Insert the temperature sensor tightly no no Is there short circuit due to trip-over of the parts? Is malfunction eliminated yes Make the parts upright no no Is the temperature sensor normal according to the Resistance Table? Is malfunction eliminated yes no Replace
7URXEOHVKRRWLQJ 0DOIXQFWLRQ RI %ORFNHG 3URWHFWLRQ RI ,'8 )DQ 0RWRU + Troubleshooting for H6 malfunction Stir the blade with a tool to see whether the blade rotates smoothly yes no Tighten the screw; reassemble the blade, motor and shaft bearing rubber base sub-assy to make sure there is no foreign object between them Is malfunction eliminated no Check if the connection of PG motor feedback terminal is firm.
7URXEOHVKRRWLQJ 0DOIXQFWLRQ RI 3URWHFWLRQ RI -XPSHU &DS & Troubleshooting for C5 malfunction Is there jumper cap on the mainboard? no Assemble the jumper cap with the same model yes Is malfunction eliminated no Is the jumper cap inserted correctly and tightly ? no Insert the jumper cap tightly yes no Is malfunction eliminated yes Replace the jumper cap with the same model yes Is malfunction eliminated yes no Replace the mainboard with the same model.
7URXEOHVKRRWLQJ 0DOIXQFWLRQ RI =HUR FURVVLQJ ,QVSHFWLRQ &LUFXLW 0DOIXQFWLRQ RI WKH ,'8 )DQ 0RWRU 8 Troubleshooting for U8 malfunction Re-energize1 minute after de-erergization U8 is still displayed No The unit returns to normal. Conclusion:U8 is displayed due to instant energization afte deenergization while the capacitor discharges slowly. Yes The zero-cross detection circuit of the mainboard is defined abnormal.
7URXEOHVKRRWLQJ 0DOIXQFWLRQ RI FRPPXQLFDWLRQ ( Start Cut off power supply. Check if connection line of IDU and ODU and the wire inside electric box are correctly connected. Correct connection? Connect the line according to wiring diagram.
7URXEOHVKRRWLQJ 0DOIXQFWLRQ RI SRZHU VXSSO\ IURP LQGRRU XQLW WR RXWGRRU XQLW Main inspection point: Flow chart of Malfunction diagnosis Energize the unit and wait for 3min Measure voltage between N 1and 3 of indoor wiring block Voltage > 200V? Measure voltage between L and N of outdoor wiring block Y N Normal wiring? Voltage > 200V? N Y Indoor main board error N Y Outdoor electric box error Adjust wiring Replace main board of indoor unit Replace outdoor electric box indoor and outdoor w
7URXEOHVKRRWLQJ Energize the unit and start it Voltage between L and N of indoor wiring block Check the connecting state of the connecting terminal Y Voltage > 200V? Reliable connection N N Adjust connecting state Y Check power supply Replace main board of indoor unit N Remove the error? N remove the error? Y Replace motor Y Finish 7HPSHUDWXUH VHQVRU PDOIXQFWLRQ (3) Temperature sensor malfunction Main detection points: Is outdoor ambient temperature within the normal range? Is indoor a
7URXEOHVKRRWLQJ Energize the unit and start it 0DOIXQFWLRQ GLDJQRVLV RI VWDUWXS IDLOXUH (4) Malfunction diagnosis of startup failure Main detection points: Is wiring of compressor correct.
7URXEOHVKRRWLQJ 'LDJQRVLV RI RYHUORDG DQG GLVFKDUJH PDOIXQFWLRQ (6) Diagnosis of overload and discharge malfunction Main detection points: Is electric expansion valve well connected? Is it damaged? 20min after de-energization of complete unit Is refrigerant leaked? Is overload wire connection normal? Malfunction diagnosis process: Is electric expansion valve well connected? N Y Is overload wire reliably connected? N Y Adjust connecting wire Replace electric expansion valve Remove malfunction?
7URXEOHVKRRWLQJ IRU 1RUPDO 0DOIXQFWLRQ $LU &RQGLWLRQHU &DQ W EH 6WDUWHG 8S 3RVVLEOH &DXVHV 1R SRZHU VXSSO\ RU SRRU FRQQHFWLRQ IRU SRZHU SOXJ 'LVFULPLQDWLQJ 0HWKRG $LU FRQGLWLRQHU 6WDWXV 7URXEOHVKRRWLQJ &RQ¿UP ZKHWKHU LW V GXH WR SRZHU IDLOXUH ,I \HV $IWHU HQHUJL]DWLRQ RSHUDWLRQ LQGLFDWRU LVQ¶W EULJKW ZDLW IRU SRZHU UHFRYHU\ ,I QRW FKHFN SRZHU VXSSO\ FLUFXLW DQG PDNH VXUH WKH SRZHU SOXJ LV DQG WKH EX]]HU FDQ W JLYH RXW VRXQG FRQQHFWHG ZHOO :URQJ ZLUH FRQQHFWLRQ EHWZHHQ LQGRRU XQLW
7URXEOHVKRRWLQJ 2'8 )DQ 0RWRU &DQ W 2SHUDWH 3RVVLEOH FDXVHV 'LVFULPLQDWLQJ PHWKRG DLU FRQGLWLRQHU VWDWXV :URQJ ZLUH FRQQHFWLRQ RU SRRU &KHFN WKH ZLULQJ VWDWXV DFFRUGLQJ WR FLUFXLW FRQQHFWLRQ GLDJUDP 7URXEOHVKRRWLQJ &RQQHFW ZLUHV DFFRUGLQJ WR ZLULQJ GLDJUDP WR PDNH VXUH DOO ZLULQJ WHUPLQDOV DUH FRQQHFWHG ¿UPO\ 0HDVXUH WKH FDSDFLW\ RI IDQ FDSDFLWRU ZLWK DQ &DSDFLW\ RI WKH 2'8 IDQ PRWRU LV XQLYHUVDO PHWHU DQG ¿QG WKDW WKH FDSDFLW\ LV RXW RI 5HSODFH WKH FDSDFLW\ RI IDQ WKH GHYLDWLRQ UDQJH L
www.cooperandhunter.
