Service Manual
Contents
1. AKIRA makes lite better Air Conditioner Service Manual Model No AC SSCGA Version 1 0 MODEL AC S5CGA makes life better CONTENTS TECHNICAL SPECIFICATION PERFORMANCE CURVE EXPLODED VIEW amp PARTLIST CIRCUIT DIAGRAM PCB FUNCTION MANUAL Model No AC SSCGA Version 1 0 makes life better 4 TECHNICAL SPECIFICATION Horizontal manual air flow direction included Capacity BTU HR S000BTU 220 240V 50Hz Energy saver switch mm indoor mm outdoor Indoor weight Net gross kg Outdoor weight Net gross kg 25 27 Model No AC SSCGA Version 1 0 makes life better 5 PERFORMANCE CURVE The change relation between low pressure operation current and temp Cooling operation condition In testing indoor and outdoor have same work condition Low pressure absolute value Operation current A F3 30 T 20 25 30 I T 20 15 M 350 a 50 60 70 80 5 0 60 RON Dry bulb temp humidity Dry bulb temp humidity a b Heating operation Indoor work condition dry bulb temp 21 wet bulb temp 15 5 C 3 3 2 s E 5 B a 3 2 El oe a 10 15 o Outdoor dry bulb temp Outdoor dry bulb temp d c Model No AC SSCGA Version 1 0 makes life better 6 Cooling performance Heating performance not including electric heater Indo r Relative humiditw50 Outdoor relative humidity 85 m Cooling capacity change ra2. Qty 1 Wall mounting frame 2 3 4 onnecting level 2 ir guide holder 15 16 10 l 2 l l Evaporator assy 14 ront case assy 15 Guide louver 7 16 Front panel 17 Filter 00 3 ilter l Power cord I 35 Power cord l l Model No AC S5CGA Version 1 0 makes life better OUTDOOR UNIT Model No AC SSCGA Version 1 0 makes life better 2 Frontplate 0 0 0 1 3 Axialflowfan 1 5 Motorsuppotasy 6 Condenserassy 7 Rear grill assy 8 Right side plate assy 11 Fan capacitor 1 12 Electric box assy 13 Compressor capacitor 1 14 Terminal board T386A 1 15 Wireseat 1 16 Wiecip 1 17 Capacitor clamp 1 18 Capillary assy 19 solationsheet 1 20 Compresso 1 21 Overload protector 1 alve 1 4 23 Valve 3 8 1 24 Valve support 1 26 Compressor gasket 3 LH U Model No AC S5CGA Version 1 0 11 makes life better 12 CIRCUIT DIAGRAM These circuit diagrams are subject to change without notice Please refer to the ones stuck on the machines Outdoor unit 4R4 4R2 RE K INDOOR val 5 l OBL UNIT C2 21 LL Y iH BN RD BL BK LOCO MER MOTOR i de YE GN i OUTDOOR UNIT JE MN L RES Indoor Unit FAN OB di TRANSFORMER n i Pos m LS B DE E bh TUBE TEMSE
3. NSOR INDOOR UNIT TEE Gg ROOM TEMSENSOR STEP MOTOR o PN I Mad Model No AC SSCGA Version 1 0 makes life better 13 PCB FUNCTION MANUAL 3 In 1 PCB Function manual A Running mode 1 Cooling 2 Dehumidifying 3 Heating 4 Auto B Input parameters 1 Indoor ambient temp T in 2 Evaporator tube temp T eva 3 Setting temp T set 4 Condenser tube temp T con C Targets 1 Indoor motor motor Swing motor Outdoor motor single speed motor Compressor Four way reversing valve Cooling dehumidifying indicator running indicator Digital tube setting temp indicator or timer indicator DIN m nS D Fundamental functions Cooling mode l The running conditions and control measures a IfTin gt or T set 1 C the machine runs at the cooling mode Compressor runs outdoor motor runs at low speed indoor fan runs at the set fan speed b IfTin lt or T set 1 C the machine stops Compressor stops first outdoor motor stops after 15 seconds indoor motor runs at the set fan speed c IfTset 1 C lt T in lt T set 1 C keep the previous state In this mode the reversing valve is inactive the temp setting range is from 16 30 C Protect function a Anti freezing function i If compressor have run 6 minutes and detect T eva lt 0 C for continuous 3 minutes then the compressor outdoor fan stopped indoor fan run at the set fan speed After 3 minutes later it will run at the original s
4. T indoor T set 1 C keep the original state b If T indoor lt or T set 2 C select heating mode from this time the set temp is 20 C if T indoor gt or T set 4 C compressor stops first outdoor motor stops 15 seconds later reversing valve is always active indoor motor runs as the blowing surplus heat condition If T set 2 C T indoor T set 4 C keeps the original state Cooling only AUTO mode there is no heating function in this mode 3 Protections a Itis same as the one in cooling or heating mode 4 Other controls 1 SWING mode a When it is active the louver returns to position O close the air outlet b When machine works it turns to the max Air output position D then returns back to position L to stand by position L 1s the horizontal place mentioned before c Inswing state the louver swings between position L and position D d When the machine is switched off it is back to position O e When the machine is running and the swing is off the louver stops at position E O Model No AC SSCGA Version 1 0 makes life better 16 2 Beeper a When PCB becomes active or receives the signal from the remote controller the beeper will beep 3 Indication lamps a It flashes when defrosting begin 4 Press the AUTO button a time the machine runs in AUTO mode indoor motor runs in low speed fresh air function is not active press again the machine stops 5 Fresh air function a There are two
5. fresh air modes Fresh air 2 i Fresh air motor will work 1 hour then rest 1 hour then cycle again Fresh air 1 il Press the button AIR on the remote controller to select fresh air 1 function the swing motor keeps running till you give a signal to change it 6 Automatic fan speed a In cooling mode if T indoor gt T set 5 C high speed T indoor gt or T set 3 C middle speed T indoor gt or T set 1 C low speed b In dehumidify mode if T indoor gt or T set 5 C high speed T indoor gt or T set 2 C low speed SLEEP mode 1 In cooling or dehumidifying mode 1 hour after you set the sleep timer T set will add 1 C automatically another 1 hour another 1 will be added 2 In heating mode 1 hour after you preset the sleep timer T set will lower 1 C automatically another 1 hour another 1 C will be lowered Model No AC SSCGA Version 1 0 AKIRA makes life better
6. ndoor motor stop In this mode the reversing valve is inactive the temp setting range is 16 30 C Anti freezing protection a IfT indoor gt T set 2 C it goes into cooling running anti freezing function is same with cooling mode but the compressor must stops for 4 minutes when it goes into dehumidifying mode compressor runs 6 minutes if it detects T eva lt 0 C compressor and outdoor motor stop indoor motor runs at low speed after 3 minutes delay and T eva gt or 10 C it will be back to its original state Heating mode l The working conditions and control measures a IfT in lt or T set 2 C it goes into heating mode reversing valve compressor and outdoor motor all work in the same time indoor fan will run at the same procedures with anti cool air function b IfT in gt or T set 4 C compressor stops first 15 seconds late outdoor motor stops but reversing valve keeps working indoor motor run at the procedures of blowing surplus heat c IfT set 2 C T indoor lt T set 4 C keep the previous running state In this mode the temperature setting range is 16 30 C The working conditions of auxiliary electric heater a In heating mode when compressor is working indoor motor runs at high speed and middle speed If it detect T eva lt 50 C for continuous 8 seconds and T indoor lt or 25 C electric heater will work if compressor stop or indoor motor runs at low speed or T eva 54 C o
7. r T indoor 28 C or 10 seconds before defrosting the electric heater will stop Protections a Anti cool air i When the machine starts heating and T eva gt or 22 C indoor motor runs at low speed and swing motor makes the louver at the horizontal position if T eva gt or 40 C or compressor have run 2 minutes indoor motor and swing motor will run at the set speed b Antihigh temp i In heating mode if it detect T eva 56 C 58 can be selected outdoor motor will stop in this period it will not detect the defrosting temp If T eva 52 C outdoor motor will be back running it will not detect defrosting temp in the first 5 seconds c Blowing surplus heat i In heating mode when set temp is reached comp stops first 15 seconds later outdoor fan stops Indoor motor blows 90 seconds 60 seconds can be selected at low speed swing motor makes the louver at the horizontal position Compressor s protection is same with the one in cooling mode e Overload protection 1 Ifit detects that the system current surpassed the designed 13 A for continuous 3 seconds compressor electric heater and outdoor motor stop indoor motor runs the same procedures as the blowing surplus heat condition After 3 minutes and current no more than 13 A the machine will be back to its original state indoor motor runs as the anti cool air condition If it detects overloading state for 3 consecutive times within 30 minutes the machine stops and i
8. t must be restarted by remote controller Model No AC SSCGA Version 1 0 makes life better 15 f Defrosting conditions and procedures i In heating mode if compressor has run 44 minutes in its first 6 minutes it will not detect defrosting temp and it has detected T con or 4 C for continuous 1 minutes it begins to defrost electric heater will stop for 10 seconds even if electric heater is not working then indoor motor stops reversing valve becomes inactive in another 2 seconds another 2 seconds later outdoor motor stops when T con gt or 10 C or defrosting lasts for 10 minutes outdoor motor and reversing valve becomes active indoor motor will run as the anti cool air condition then it cycles again recalculates the compressor s running time again In this period if any protection works and after the machine 1s back to work it will re start defrosting state it will not detect outdoor tube temp when compressor s in its first 6 minutes running g Noise eliminated protection 1 When you use RUN STOP button to switch off the machine reversing valve will become inactive in 2 minutes AUTO mode 1 In AUTO mode standard cooling T set 25 C standard heating T set 20 C 2 Working procedures a If T indoor gt or T set 1 C select cooling mode from this time the set temp is 25 C If T indoor or T set 1 C compressor and outdoor motor stop indoor motor runs at the set speed if T set 1
9. tate if T eva gt or 10 C b Compressor protection i Compressor s starting interval should be more than 3 minutes no matter in whatever modes and conditions If it s plugged in first time the compressor does not have 3 minutes delay When compressor is started it will not stop within 5 minutes unless it is plugged out c Overload protection 1 Ifit detect the system current surpass the designed 13 A for continuous 3 minutes the machine go into fan mode when 3 minutes passed and it detect the current no more than 13 A it will back to original state If it detects overloading states for 6 consecutive times the machine stops and must be restarted by remote controller Model No AC SSCGA Version 1 0 makes life better 14 Dehumidifying mode l The working conditions and control measures a IfT in T set 2 C itis in cooling running the indoor motor speed can be selected and outdoor motor run at low speed b IfT set 2 C lt or T in lt or T set 2 C it goes into dehumidifying running the indoor motor run at the low speed 6 minutes later the compressor stops another 15 seconds later the outdoor fan stops and another 30 seconds later the indoor motor stops 3 and a half minutes later compressor and outdoor fan run again indoor motor runs at the low speed then the machine cycle the above procedures repeatedly Outdoor motor runs at the low speed c IfT in gt T set 22C compressor outdoor motor and i
10. tio Heating capacity change ratio 0 5 0 5 10 js AINE NT bulb temp Outdoor wet bulb temp b Cooling performance Heating performance not including electric heater Indoor relative humidity 50 Outdoor relative humidity 8595 120 pena n III 115 ANNE LIT Indoor dry bulb ter Cooling input power ratio Heating input power ratio E n 30 35 40 5 oO 5 10 15 Outdoor dry bulb temp Outdoor wet bulb temp c d Model No AC S5CGA Version 1 0 makes life better b z 5 a A E m 5 E Es 5 gt 2 E z a c e ds 3 5 7 9 Evaporative pressure Evaporative pressurc The affection to the charging quantity by pressure under cooling work condition The affection to the charging quantity by pressure under cooling work condition Indoor work condition dry bulb 27 C wet bulb 19 50 Indoor work condition dry bulb 21 C e if Height difference of outdoor unit m 3 4 6 8 10 The length of connection pipe Cooling capacity vary with the length of connection pipe Model No AC SSCGA Version 1 0 Outdoor dry bulb temp relative humidity 85 AKIRA makes life better EXPLODED VIEW amp PART LIST INDOOR UNIT st CN AC SSCGA Model No Version 1 0 makes life better l all mounting frame 2 Rear case assy o 3 Sorewcover 0 000 4 Cross flow fan l 6 panbeaing 0 ater tray C E
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