Airwell VAR 9 Service Manual Download Page 17 | Manualshive

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CONTROL SYSTEM

11-2

SM VAR 1-A.1 GB

11.1.4

Main PCB Controller

CONTENT

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Summary of Contents for VAR 9

Page 1: ...VAR Series REFRIGERANT R410A COOLING ONLY Heating by an heating element AUGUST 2008 Unit Description Consol VAR 9 R410A SM VAR 1 A 1 GB CONTENT...

Page 2: ...sue for original and changed pages are Original 0 May 2006 Total number of pages in this publication is 54 consisting of the following Page No Revision No Page No Revision No Page No Revision No Title...

Page 3: ...CONDITIONS 3 1 4 OUTLINE DIMENSIONS 4 1 5 PERFORMANCE DATA PRESSURE CURVES 5 1 6 SOUND LEVEL CHARACTERISTICS 6 1 7 ELECTRICAL DATA 7 1 8 WIRING DIAGRAMS 8 1 9 REFRIGERATION DIAGRAMS 9 1 10 TROUBLESHO...

Page 4: ...icroprocessor control Back curve centrifugal fan allowing low noise level operation Easy installation and service Compact dimensions 1 3 Filtration The console VAR series presents several types of air...

Page 5: ...level H M L dB A 56 53 51 Moisture removal L hr 1 Condensate drain tube I D mm 9 Dimensions W H D mm 1110 382 240 Weight kg 42 Package dimensions W H D mm 1160 460 335 Packaged weight kg 45 Units per...

Page 6: ...itions in accordance with ISO 5151 and ISO 13253 for ducted units Cooling Indoor 27o C DB 19o C WB Outdoor 35 o C DB 3 1 Operating Limits Indoor Outdoor Cooling Upper limit 32o C DB 23o C WB 43o C DB...

Page 7: ...4 1 OUTLINE DIMENSIONS SM VAR 1 A 1 GB 4 OUTLINE DIMENSIONS 4 1 Model VAR 9 ST RH CONTENT...

Page 8: ...78 1 86 1 91 1 94 PI 0 75 0 75 0 75 0 76 0 76 25 TC 2 43 2 63 2 76 2 84 2 91 SC 1 65 1 75 1 84 1 89 1 93 PI 0 81 0 81 0 82 0 82 0 83 30 TC 2 27 2 48 2 67 2 77 2 85 SC 1 59 1 69 1 80 1 85 1 89 PI 0 87...

Page 9: ...15 20 25 30 35 40 Outdoor Temp DB o C Suction Pressure Bar g 15 21 WB DB C 17 24 WB DB C 19 27 WB DB C 21 29 WB DB C 23 32 WB DB C Discharge Pressure VS Outdoor Temp 10 12 14 16 18 20 22 24 26 28 30 3...

Page 10: ...ARACTERISTICS SM VAR 1 A 1 GB 6 SOUND LEVEL CHARACTERISTICS 6 1 Sound Pressure Level 6 2 Sound Pressure Level Spectrum Room 2 Room 1 0 9M 1 12M Microphone A C JKF 9 Middle of Filter 1 0M FAN SPEED LIN...

Page 11: ...A 6 Circuit Breaker A 10 Power Supply Wiring No X Cross Section mm2 3x1 5 Interconnecting Cable RC Model No X Cross Section mm2 N A Interconnecting Cable ST Model No X Cross Section mm2 N A Already co...

Page 12: ...5 8 1 S F U B F M B S U V F _ 7 Z M Q Q V T S F X P 1 E O F H F 6 3 3 0 3 0 7 5 8 3 L D B M F V M O X P S F H O B S 0 E F 3 U F M P J 7 F U J I 8 X P M M F O F F S H X P M M F 1 4 1 1 0 1 4 1 1 1 0 0...

Page 13: ...9 1 REFRIGERATION DIAGRAMS SM VAR 1 A 1 GB 9 REFRIGERATION DIAGRAMS 9 1 VAR 9 ST RH Cooling Only Capillary tube Condenser Filter Evaporator r o s s e r p m o C port Service Sensor CONTENT...

Page 14: ...ant run replace the indoor fan motor 3 Indoor fan works when unit is OFF PCB problem Replace controller 4 Compressor does not start Electronics control problem or protection Perform diagnostics and fo...

Page 15: ...eaters power supply if lower than 198 VAC replace PCB 9 One of the protections is activated and compressor is stopped with no apparent reason Control problem or refrigeration system problem Perform di...

Page 16: ...C group Cooling only cooling and heating by heat pump x SH group Cooling and heating by heat pump and supplementary heater x RH group Cooling heating by heaters only 11 1 2 Model Plug Settings Before...

Page 17: ...CONTROL SYSTEM 11 2 SM VAR 1 A 1 GB 11 1 4 Main PCB Controller CONTENT...

Page 18: ...d F PROGRAMMING Comes on during operation Flashes to indicate that the remote control signal has been received and stored in the memory applicable with remote control only G FILTER Comes on when the a...

Page 19: ...EVEL4 Overflow Level Max Maximum Min Minimum min Minute time NA Not Applicable OCP Outdoor Condensation Pump OCT Outdoor Coil Temperature RT3 sensor OF OFAN Outdoor Fan OPER Operate Para Paragraph RAT...

Page 20: ...3 2 IFAN operation a Min time interval between IFAN speed change in AUTOFAN Mode is 30 sec b Min time interval between IFAN speed change in H M L Mode is 1 sec c IFAN speed in Heat Cool AUTOFAN Mode i...

Page 21: ...after a unit is switched from OFF STBY to operation At the first occurrence of 10 min continuous COMP operation the current ICT are compared with those when the COMP was switched from OFF to ON 10 mi...

Page 22: ...at the first occurrence of 15 min continuous COMP operation ICT is compared with ICT reading when the COMP was switched from OFF to ON 15 min before RV fault is defined when ICT decreases more than 5...

Page 23: ...C sensor in I FEEL mode c Indoor Coil Temp is detected by ICT d Outdoor Coil Temp is detected by OCT 11 4 2 Control Functions a COMP Operation ON OFF RT SPT 0 1 COMP b OFAN Operation x In normal opera...

Page 24: ...VAR 1 A 1 GB 11 4 3 Sequence Diagrams a Maintaining room temp at desired level by comparing RT and SPT with user defined IFAN speed RT SPT o c 3 2 1 0 1 2 ON OFF ON OFF USER FAN SPEED ON OFF COMP WVL...

Page 25: ...CONTROL SYSTEM 11 10 SM VAR 1 A 1 GB b Maintaining room temp at desired level by comparing RT and SPT with AUTO IFAN RT SPT oc 4 3 2 1 0 1 2 ON OFF ON OFF H L M ON OFF COMP WVL OFAN IFAN RV CONTENT...

Page 26: ...ll be switched ON according to the following graph NOTE 1 When COMP is ON except WAX Model IFAN will change from LOW to OFF either when a ICT 28 and IFAN is on for 5 min or longer Or b ICT 20 NOTE 2 W...

Page 27: ...ules for Heaters in RC group a Heaters can be enabled only if IFAN is ON b Heaters will operate according to T and the following graph 32 20 20 15 50 ON OFF ICT 45 HE 1 HE 2 General Window 3 Rules for...

Page 28: ...ration for RC and SH groups 1 As a general rule for RC and SH groups excluding protection modes OFAN starts with the compressor 2 When OFAN is ON it will operate according to the following conditions...

Page 29: ...EAT AUTO at heating Temp Selected desired temperature Fan HIGH MED LOW Timer Any I FEEL ON or OFF 11 6 1 Sequence Diagram Maintains room temp at desired level by comparing RAT or RCT to SPT RT SPT o c...

Page 30: ...an Mode HEAT AUTO at heating Temp Selected desired temperature Fan AUTO Timer Any I FEEL ON or OFF 11 7 1 Sequence Diagram Maintains room temp at desired level by controlling COMP IFAN and OFAN RT SPT...

Page 31: ...at Heating Temp Selected desired temperature Fan HIGH MED LOW Timer Any I FEEL ON or OFF 11 8 1 Sequence Diagram Maintains room temp at desired level by controlling Heating Elements HE1 or HE2 RT SPT...

Page 32: ...AT AUTO at Heating Temp Selected desired temperature Fan AUTO Timer Any I FEEL ON or OFF 11 9 1 Sequence Diagram Maintains room temp at desired level by controlling the 2 Stage Electric Heaters RT SPT...

Page 33: ...PT 1O C or SPT 1O C respectively d For RC SH units Mode change between Auto Heat Auto Cool Modes is possible only after the COMP has been OFF during the last T minutes Mode Change Time T Auto Cool to...

Page 34: ...SH Groups Maintains room temp at desired level by selecting between cooling and heating modes RT SPT o c 3 2 1 0 1 2 3 4 ON OFF ON OFF H M L OFF ON OFF ON OFF COMP OFAN HE1 HE2 IFAN RV USER FAN SPEED...

Page 35: ...30 sec COMP OFAN HE1 HE2 IFAN RV OFF 3 min 2 Auto Heat Mode Auto Cool Mode Auto Heat Mode 1 3 min 2 11 11 Dry Mode 11 11 1 Dry ST or RC Group or P2000 Model with Any Group Settings Mode DRY Temp Sele...

Page 36: ...an the 3 min Min COMP OFF time after every 15 min of continuous COMP operation 2 When DRY is OFF the COMP is forced ON for 6 min longer than the 3 min Min COMP ON time after every 15 min of continuous...

Page 37: ...re Fan LOW automatically selected by software Timer Any I FEEL Any Control function Reduces room humidity with minimum temp fluctuations by operating in Cool Mode with LOW speed IFAN and HE RT SPT o c...

Page 38: ...Fan Any Timer Any I FEEL ON or OFF Control Function Protects the indoor coil from ice formation at low ambient temperatures ICT oc 2 ON OFF ON OFF t1 t2 t3 COMP OFAN 1 5 14 0 1 ON OFF IFAN t1 t1 5 min...

Page 39: ...D 52 55 61 66 L COMP is forced OFF OFAN is forced ON IFAN forced to LOW 68 OFAN follow operation of COMP COMP is forced OFF OFAN is forced ON For all models except WAX P2000 For WAX P2000 models NOTE...

Page 40: ...om ice formation by controlling COMP RV operation 1 Deicer Activation Algorithm a Static deicer threshold is 5 C b Dynamic deicer threshold changes of 3 C in 3 minutes in the OCT temperature c In firs...

Page 41: ...ANY all SH units except WAX RC or WAX units HEs are forced OFF IFAN is forced to Low Speed BLINK ON OPER LED NOTES 1 In the following Deicing cycles the time interval between two Deicing cycles activa...

Page 42: ...Fan Any Timer Any I FEEL ON or OFF Control Function Protects the compressor from high pressure by switching OFF the OFAN and COMP ICT o c Any Off Any Off COMP OFAN 52 55 61 66 COMP is forced OFF 67 OF...

Page 43: ...in 8 min Overflow when unit is ON Overflow when unit is OFF 1 min Notes 1 The switch used for water level detection is closed under normal condition and is open when water overflow 2 For the NEC versi...

Page 44: ...schedule is disabled 2 The forced operation is activated when the mode button on the Display Board is used to switch the unit to COOL or HEAT mode 3 The IFAN is always set to Autofan Speed in forced o...

Page 45: ...from 0 to 3o C x In other modes there is no SPT adjustment x The SPT adjustment is cancelled when the Sleep mode is cancelled SPT Time Hr 4 8 5 3 2 6 Start Sleep 7 RT SPT 1 SPT 2 SPT 3 SPT 2 SPT 1 SP...

Page 46: ...arting of Sleep the Sleep time is extended And instead of going to SB at the 7th hour the A C will work until reaching the Off time Case 3 is an exception to case 2 The Sleep Mode will not be extended...

Page 47: ...R FAN SPEED TEST SELF TEST FLOW CHART Step 1 Step 2 Step 3 FOR CONTROLLER VERSION 4V5 OR HIGHER COOL HEAT COMPRESSOR OUTDOOR FAN R V LOW MEDIUM HIGH TIMER OPERATE STANDBY BUZZER TEST ONE BEEP SOUND RE...

Page 48: ...remote control IR transmitter and change the temperature settings If the display indoor unit receive the settings properly the following steps will start c STEP 3 MODEL SETTING CONFIRMATION 1 The STAN...

Page 49: ...STEP 5 FREQUENCY TESTING If the frequency measuring process fails the COOL LED will turn ON In order to move to the next step press ON OFF button on the remote control g STEP 6 INPUT TEST The test pu...

Page 50: ...ues of Sensors Temperature VS Voltage DC Temp C Voltage V Temp C Voltage V Temp C Voltage V Temp C Voltage V 20 4 554 2 3 744 24 2 555 46 1 487 19 4 529 3 3 695 25 2 5 47 1 447 18 4 502 4 3 646 26 2 4...

Page 51: ...o the following table No Problem 1 2 3 4 5 1 RT1 is disconnected 2 RT1 is shorted 3 RV fault 4 RT2 is disconnected 5 RT2 is shorted 6 Reserved 7 RT2 temp reading doesn t change 8 RT3 is disconnected 9...

Page 52: ...12 1 EXPLODED VIEWS AND SPARE PARTS LISTS SM VAR 1 A 1 GB 12 EXPLODED VIEWS AND SPARE PARTS LISTS 12 1 Model VAR 9 ST RH 17 29 23 14 2a 2 21 22 15 C B A 3 30 D 12 13 E 16 CONTENT...

Page 53: ...12 2 EXPLODED VIEWS AND SPARE PARTS LISTS SM VAR 1 A 1 GB 12 2 Model VAR 9 ST RH page 2 18a 6 19b 19a 20 18 7 19 9a 25 24 11 10 8 9 11 4 1 5 31 26 28 27 CONTENT...

Page 54: ...13PAN 1 15 413087 Compressore insulated 1 16 413511 Cappilary assy R410A VAR 1 17 413200 Cond coil 1 18 442029 Capacitor 1mF 425V 30000h P1 P 1 19 413710 THERMISTOR WTH CAP L470 1 20 442012 CAPACITOR...

Page 55: ...13 1 APPENDIX A SM VAR 1 A 1 GB APPENDIX A INSTALLATION AND OPERATION MANUAL INSTALLATION AND OPERATION MANUAL VAR 9 ST RH CONTENT...

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