Service Manual VAR series=> brand Airwell
Contents
1. LOW IFAN ore 5 minutes ON time ON SPE OMP OFAN n 95 I 44 Max 15 minutesce s N aH l min Max 15 minutes hr e 2 gt N Note1 i j HE1 amp HE2 ON RV oFF NOTES 1 When DRY is ON the COMP is forced OFF for 3 5 min longer than 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 COMP OFF time 3 When DRY is changed from ON to OFF or vice versa the limits mentioned in 1 amp 2 are ignored The COMP operation is only controlled by the 3 min Min OFF time and 1 min Min ON time 4 In DRY Mode IFAN is LOW when COMP is ON and is OFF when COMP is OFF 5 HEs are always OFF in DRY Mode SM VAR 1 A 1 GB 11 21 CONTENT CONTROL SYSTEM 11 11 2 DRY SH or RH group Mode DRY Temp Selected desired temperature 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 c 2 1 90 Time min IFAN off GOM a amp OFAN OFF on ee ON RV forF 11 22 SM VAR 1 A 1 GB CONTENT CONTROL SYSTEM 11 12 Protection 11 12 1 Cooling Mo2. 2 Switch unit to COOL mode HIGH speed with 16 C set point cooling Check outdoor motor power supply voltage to be higher than 198 VAC If OK replace capacitor if it still wont run replace motor In case the voltage is lower then 198 VAC replace and the main poer supply is higher replace PCB 10 1 TROUBLESHOOTING All components are operating properly but no cooling Refrigerant leak Check refrigeration system All components are operating properly but no heating Control problem or Heater problem Check heaters power supply if higher than 198 VAC If OK replace heaters if heaters power supply if lower than 198 VAC replace PCB One of the protections is activated and compressor is stopped with no apparent reason Control problem or refrigeration system problem Perform diagnostics to detect active protection and take action accordingly Water leakage from indoor unit Indoor unit drainage tube is blocked Check and open drainage tube 10 2 Filter LED comes ON after 512 hours of operation Indication time to clean the air filter CONTENT clean air filter Press the RESET button SM VAR 1 A 1 GB CONTROL SYSTEM 11 CONTROL SYSTEM 11 1 Electronic Control 11 1 1 Introduction The electronic control information is designed for service applications and is common to the following groups of air conditioners e ST RC group Coo
3. OFF Note 3 HEs forced OFF ON BLINK NOTES 1 In the following Deicing cycles the time interval between two Deicing cycles activation is between 30 to 80 min 2 For RC group IFAN is forced OFF 3 For SH group HEs are forced ON and IFAN is forced to operate at LOW speed regardless of the ICT and difference between RAT amp SPT 4 When jumper J7 is set the DST value is 2 C SM VAR 1 A 1 GB CONTENT rirwell CONTROL SYSTEM b High Pressure Protection excluding RH Group Mode AUTO HEATING 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 c For all models except WAX For WAX model la cp EE pl capo ot E ee 55 OES bees sassa kam sasha sa botas a Vest shan 52 COMP forced OFF COMP is forced OFF l Any is force OPER LED BLINK SM VAR 1 A 1 GB 11 27 CONTENT CONTROL SYSTEM 11 12 3 Condensation Pump model Mode Cool Dry Auto Temp Selected desired temperature Fan Any Timer Any FEEL Any Control function Prevent
4. RTS temp reading doesn t change s s s 5 LEGEND o ON e OFF NOTES 1 If faults occur in more than one thermistor except case number 12 in table above only one fault will be indicated according to the following order RT3 RT2 RT1 2 AIC will return to normal mode when sending a command by the R C during system DIAGNOSTICS mode If the command from the R C contains a Group ID the ID will become the new Group ID of the ELCON unit SM VAR 1 A 1 GB CONTENT EXPLODED VIEWS AND SPARE PARTS LISTS EXPLODED VIEWS AND SPARE PARTS LISTS 12 Model VAR 9 ST RH 12 1 T LN 7 12 1 CONTENT SM VAR 1 A 1 GB EXPLODED VIEWS AND SPARE PARTS LISTS 12 2 Model VAR 9 ST RH page 2 12 2 CONTENT S NS illi via SM VAR 1 A 1 GB 12 3 Model VAR 9 ST RH 413060 Enclosure assy VAR BEEN 2 Sie panei nsure 3 exe ARFUTERELIOVAR 4 eue osae s mex Box exo rons J s es Feroare e aso wns ew sromwicowmousnmens 1 e eaea e eae e 2a Side panel R insulated VAR 0 1 3 5 6 7 8 9 0 1 3 5 6 7 8 9 0 1 1 1 12 1 14 14 1 1 1 1 1 2 2 22 2 24 2 2 2 2 2 3 3 SM VAR 1 A 1 GB CONTENT EXPLODED VIEWS AND SPARE PARTS LISTS 12 3 Prirwell APP
5. PI Power Input kW WB Wet Bulb Temp C DB DryBulb Temp C ID Indoor OD Outd OU Outdoor 1 Marked area is below standard operating limits SM VAR 1 A 1 GB 5 1 CONTENT PERFORMANCE DATA amp PRESSURE CURVES 5 2 5 2 1 5 2 Pressure Curves Cooling Prirwell Suction Pressure VS Outdoor Temp Suction Pressure Bar g 25 30 Outdoor Temp DB C Discharge Pressure VS Outdoor 15 21 WB DB 17 24 WB DB C 19 27 WB DB C 21 29 WB DB 23 32 WB DB C Discharge Pressure Bar g 25 30 Outdoor Temp DB C CONTENT 15 21 WB DB 17 24 WB DB 19 27 WB DB C 21 29 WB DB C 23 32 WB DB C SM VAR 1 A 1 GB Airwell SOUND LEVEL CHARACTERISTICS 6 SOUND LEVEL CHARACTERISTICS 6 1 Sound Pressure Level 6 2 Sound Pressure Level Spectrum
6. Filtration The console VAR series presents several types of air filters Easily accessible and re usable pre filters mesh Carbon and electrostatic filter optional Control The microprocessor indoor controller supplied as standard provide complete operating function and programming For further details please refer to the Operation Manual Appendix A Inbox Documentation Each unit is supplied with its own installation and operation manuals SM VAR 1 A 1 GB 1 1 CONTENT Airwell PRODUCT DATA SHEET 2 PRODUCT DATA SHEET 2 1 Model VAR 9 ST RH Model Indoor amp Outdoor Unit VAR 9 ST RH Characteristics _ Capacity Btu hr Power input Ww J 261 Energy efficiency class Rated current Starting current Circuit breaker rating RPM m B A Fan type amp quantity Centrifugal x 1 Fan speeds H M L 940 845 760 Air flow H M L 400 360 315 Condensate drain ibe LD mm 2 Refrigerant control Compressor type model Fan type amp quantiy Fan speeds Reeanwpe RM ReWgernteage Operation controltype mes T Rating conditions in accordance to ISO 5151 and ISO 13253 for ducted units Sound pressure level measured at 1 meter distance from unit 2 Fanspeeds 2
7. 90 14 lt m 80 T 3 x 5 70 x 1NC 70 e m NM t 5 60 1 t 60 2 50 2 e 1 50 pct 40 2 INC 40 gt p 9 Dore 30 H lt NC 30 m z 20 ___ APPROXIMATE THRESHOLD 8 HEARING Lr Nc 20 CONTINUOUS NOISE 10 63 125 250 500 1000 2000 4000 8000 OCTAVE BAND CENTER FREQUENCIES Hz SM VAR 1 A 1 GB 6 1 CONTENT Airwell ELECTRICAL DATA ELECTRICAL DATA 7 1 Single Phase Units Console 9 Power Supply 1PH 230V 50Hz Max Current A Circuit Breaker A Power Supply Wiring No X Cross Section mm Interconnecting Cable RC Model No X Cross Section mm Interconnecting Cable ST Model No X Cross Section mm Already connected on factory as standard NOTE Power wiring cord should comply with local lows and electrical regulations requirements SM VAR 1 A 1 GB 7 1 CONTENT WIRING DIAGRAMS WIRING DIAGRAMS 8 VAR 9 ST RH Model 8 1 10 00 Lp ON Josuas dway wooy 105025 dwajysoyag C nues duae fejdsig 2905 PRH Ajddns samog Ny BA 450 NOD 402 TA abueg umag ang peg 388 2529854 409 KAW 8 1 SM VAR 1 A 1 GB CONTENT Arirwell REFRIGERATION DIAGRAMS 9 REFRIGERATION DIAGRAMS 9 1 VAR 9 ST RH Cooling Only Evaporator Conde
8. 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 min before If the AT is less than 3 C the thermistor is regarded as defective b The ICT no change error can be disabled together by connecting a 4 7kQ resistor 596 to the ICT connector These resistors are equivalent to a thermistor 48 1 C e Cases for disabling ICT thermistor disconnected detection 1 The detection of thermistor faults a and b above is disabled when Deicer Protection is started The detection will be enabled again only after 1 the deicing is completed and 2 COMP has been restarted and operated for 30 sec 2 When all the following conditions are fulfilled a 4 7kQ resistor is connected to the OCT IFAN is OFF Compressor is ON ICT 30 disconnected 11 6 SM VAR 1 1 GB CONTENT CONTROL SYSTEM 11 3 7 RV Fault This test is applied only in compressor units where 4 7kQ resistor is not connected to the OCT The test is performed every time the unit is switched from OFF STBY to OPER in Heat mode or changes operation mode from COOL DRY to HEAT or this applies also in AUTO COOL HEAT mode If ICT is lower than 35 C at the time of mode change then 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 R
9. SM VAR 1 1 GB 2 1 CONTENT Airwell RATING CONDITIONS 3 RATING CONDITIONS Rating conditions in accordance with ISO 5151 and ISO 13253 for ducted units Cooling Indoor 27 DB 19 C WB Outdoor 35 C DB 3 1 Operating Limits x Indoor Outdoor 21 C DB 15 C WB 21 C DB Voltage 206 25 V Upper limit 32 C DB 23 C 43 C DB Cooling 3 1 SM VAR 1 A 1 GB CONTENT Frirwell OUTLINE DIMENSIONS 4 OUTLINE DIMENSIONS 4 1 Model VAR 9 ST RH 1110 SM VAR 1 A 1 GB 4 1 CONTENT Airwell PERFORMANCE DATA amp PRESSURE CURVES 5 PERFORMANCE DATA amp PRESSURE CURVES 5 1 Model VAR 9 ST RH 5 1 1 Cooling Capacity kW Cooling Mode 230V Indoor Fan at High Speed Entering Air DB Entering Air WB DB ID Coil C OD Coil C sc i72 im 187 tor 495 PI 069 069 069 069 070 _ PL 075 075 076 076 016 PI 081 081 082 082 083 P os 088 ose 090 091 Tc n 22 252 265 277 094 096 097 oss 098 TC ao 208 227 249 261 Ls 3e pae 472 pus LEGEND TC Total Cooling Capacity KW SC Sensible Capacity KW
10. Similarly when unit is changed from Heat Mode to Auto Mode the unit will continue to operate in Auto Heat Mode until the conditions for switching from Auto Heat to Auto Cool are satisfied SM VAR 1 A 1 GB CONTENT Frirwell CONTROL SYSTEM 11 10 2 Sequence Diagrams a Auto Cooling or Heating RC or SH Groups Maintains room temp at desired level by selecting between cooling and heating modes RT SPT c 3 2 1 Auto Heat Mode Auto Cool Mode Auto Heat Mode gt i H 3 COMP s 9 amp OFAN HE1 HE2 H M L OFF USER FAN SPEED H M L OFF IFAN gt 2 min BE RV orr SM VAR 1 A 1 GB 11 19 CONTENT CONTROL SYSTEM Auto Cooling Heating Group Maintains room temp at desired level by selecting between Cooling or Heating Modes RT SPT c Auto Heat Mode COMP amp OFAN HE1 HE2 IFAN RV 11 11 Dry Mode 11 11 1 Dry ST or RC Group or P2000 Model with Any Group Settings Mode DRY Temp Selected desired temperature Fan LOW automatically selected by software Timer Any Any Control function Reduce room humidity with minimum temp fluctuations by operating in Cool Mode with LOW speed IFAN 11 20 CONTENT SM VAR 1 A 1 GB rirwell CONTROL SYSTEM RT SPT c 2 1 Time min DRY ON DRY
11. 12 hour max The operation of the new Extended Sleep Mode is illustrated by the graphs below Case 1 is the Standard Sleep Mode which is the only sleep mode in the previous version of MCU The A C unit simply works for 7 hours then goes to SB Case 2 is the new Extended Sleep Mode If an active Off Timer is set to turn off the A C between 7 12 hour relative to the starting 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 to the Off Time when the Off Timer is preceded by an On Timer which is also between 7 12 hour Case 1 Standard Sleep Mode Condition Off timer is not set or is beyond 12 hour Oper SB Start 2 4 6 7 8 10 2 Time Hr Sleep Case 2 Extended Sleep Mode Condition Off timer is set at 7 12 hour Oper SB Start 2 4 6 7 8 10 Sleep Off timer 2 Time Hr Case 3 Exception to Case 2 Condition Off timer is set at 7 12 hour On timer is set at 7 12 hour and before Off timer Oper SB Start 2 4 6 7 8 Sleep 2 Time Hr 10 On timer Off timer SM VAR 1 A 1 GB 11 31 CONTENT CONTROL SYSTEM 11 15 Controller Self Test Procedure 11 15 1 By Shorting Test Jumper J1 SELF TEST FLOW CHART FOR CONTROLLER VERSION 4V5 OR HIGHER SHORT JUMPER J1 Step 1 CO
12. Condensed water from Overflowing Overflow when Overflow when Overflow unit is ON unit is OFF Water Level Normal 1 1 1 I 1 1 1 I 1 1 1 I 1 1 1 I ON 1 I 1 I 1 I OPER OFF I 1 LED I ON COMP WVL is wvL forced OFF 1 1 1 I I I I I I I 1 i ON I s i gt I 8 min 1 min qe Notes 1 The switch used for water level detection is closed under normal condition and is open when water overflow 2 Forthe NEC version of MCU the Over Flow amp Normal condition are indicated by logic 0 amp 1 at the LEVEL4 input pin respectively 3 Forthe Fujitsu version of MCU the Over Flow amp Normal condition are indicated by logic 1 amp 0 at the LEVEL4 input pin respectively 4 The Overflow condition can activate the water pump in SB and operating modes 11 28 SM VAR 1 A 1 GB CONTENT Frirwell CONTROL SYSTEM 11 13 Forced Operation Excluding PRX 8 PXD Models a Forced operation allows units to start stop and operate in cooling or heating in preset temp according to the following table Forced Operation Mode Pre set Temp for Pre set Temp for MBX P2000 PX Models FCD RWK ELD ECC WAX WNX WMN Models Temp Fan Timer I FEEL NOTES While under the forced operation the temperature compensation schedule is di
13. DE Button Pressing the button changes unit function between COOL HEAT FAN E POWER Lights on as soon as the unit is energized 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 air filter needs to be cleaned After cleaning and re installation of the filter the system must be reset RESET button H TEMPERATURE Set temperature display 18 lights 18 C 18 amp 20 lights 19 C 20 lights 20 C SM VAR 1 A 1 GB TEMPERATURE SET DECREASE Each pressing decreases set temperature by 1C J TEMPERATURE SET INCREASE Each pressing increases set temperature by 1C K FAN Each pressing changes fan speed MEDIUM LOW AUTO L FAN H High speed M FAN M Medium speed N FAN L Low speed O FAN A Automatic P RESET Press to switch off the indicator light and activate the filter function after cleaning and re installing the filter Press to cancel the audible warning Q ON OFF Unit On Off button 11 3 CONTENT CONTROL SYSTEM 11 2 Control Function 11 2 1 Abbreviations AC Alternate Current A C Air Conditioner ANY ON or OFF status CLOCK ON OFF Operation Input dry contact COMP Compressor CPU Central Processing Unit CTV Compensation Temperature Value HE Heating Element HPC High Pressure Cont
14. ENDIX A APPENDIX A INSTALLATION AND OPERATION MANUAL gt INSTALLATION AND OPERATION MANUAL VAR 9 ST RH SM VAR 1 A 1 GB 13 1 CONTENT
15. NTROL PCB RC ST TEST MODEL CONFIGURATION TEST PRESS ON Step 2 POWER BUTTON STEP MOTOR TEST FREQUENCY TEST STANDBY PRESS ON Step 3 BUTTON LEDS OFF LEDS ON TEST TIMER AUTO RELAY COOL TEST HEAT INDOOR FAN SPEED TEST COMPRESSOR OUTDOOR FAN PRESS ON RESET BUZZER TEST Step 4 BUTTON ONE BEEP SOUND PRESS ON FAN REMOTE CONTROL Step 5 BUTTON ON THE TO CPU COMUNICATION LOW REMOTE CONTROL TWO BEEPS SOUNDS Step 6 PRESS ON MODE THERMISTOR ANALOG BUTTON VOLTAGE CHECKING PRESS ON MODE EEPROM MEMORY Step 7 BUTTON TEST DISCONNECT Step 8 JUMPER J1 rirwell CONTROL SYSTEM 11 15 2 By Remote Control Settings a STEP 1 TURNING ON THE POWER Turn ON the power make sure that the unit is in operation b STEP 2 ENABLE SELF TEST MODE 1 Use the remote control to send the first settings to display indoor unit HEAT mode HIGH IFAN set temperature to 16 C I FEEL Sleep or any other timer settings are needed 2 Cover the IR transmitter components in the remote control so that it will not transmit the signals to the indoor unit display 3 Use the remote control to send the second settings to display indoor unit COOL mode LOW IFAN no I FEEL Sleep or any other timer settings 4 Uncover the 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 SE
16. SYSTEM IFAN operation rules for RH group 1 In RH group IFAN starts when HE starts When HE switches to OFF IFAN switches to LOW for 30 sec and then stops d Heaters operation rules for RC and SH groups 1 For both RC and SH groups Heaters versus AT is as follows gt 1 2 3 AT SP RT c 2 Operation rules for Heaters in RC group a Heaters can be enabled only if IFAN is ON b Heaters will operate according to AT and the following graph HE 1 amp HE 2 ON OFF General 20 32 45 50 Window 15 20 3 Rules for Heaters operation in SH group a When heaters are to be ON and IFAN is to be OFF according to d 1 above IFAN will be forced to LOW speed b Heaters will operate according to AT and the following graph MET OFF ON HE 2 OFF 37 42 45 50 ICT 4 For both RC and SH groups excluding deicing and HE2 can be ON only when the compressor is ON 11 12 CONTENT SM VAR 1 A 1 GB CONTROL SYSTEM e Heaters operation rules for RH groups 1 In RH group HE operation is according to the difference between RAT and SPT ON OF ON OF gt 5 f OFAN Operation for RC and SH groups 1 Asa 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 a OFAN operates together with the compres
17. Service Manual VAR Series Unit Description Consol VAR 9 R410A Coppe z232 REFRIGERANT j COOLING ONLY R410A Heating by an heating element AUGUST 2008 CONTENT SM VAR 1 A 1 GB LIST OF EFFECTIVE PAGES LIST OF EFFECTIVE PAGES Note Changes in the pages are indicated by a Revision in the footer of each effected page when none indicates no changes in the relevant page All pages in the following list represent effected non effected pages divided by chapters Dates of issue for original and changed pages are Original May 2006 Total number of pages in this publication is 54 consisting of the following auc 1 VOS aa qa aa 1 repere natas 1 Tested 1 1 1 Alios ons 1 5 1 5 2 1 0 1 ii eise 1 ris ero RE 1 8 1 1 Qa we eter 1 10 1 10 2 1 11 1 11 36 1 12 1 12 3 1 Appendix A 1 Zero in this column indicates an original page Due to constant improvements please note that the data on this service manual can be modified with out notice Photos are not contractual SM VAR 1 A 1 GB CONTENT A Airwell TABLE OF CONTENTS Table of Contents T z u 2 tasasatucinbiqeeceatacecesatuazcosdansstudatedaseisegaaetacedeacsiauerntae 1 1 2 gt PRODUCT DATA SHEET_ J IU aaa nigaaandn dade gacsata
18. TTING CONFIRMATION 1 The STAND BY and COOL LEDS will indicate the operation mode as follows OPERATION MODE STAND BY LED COOL LED OFF OFF 2 Testing the Model configuration Selected by the COMP STAND BY TIMER LEDS and FILTER will indicate the model configuration as follows the relevant line for this manual is highlighted Eck ov or or ON Or OFF or ON ON WMN OFF In this term the step motor will turn to HOME POSITION SM VAR 1 A 1 GB 11 33 CONTENT CONTROL SYSTEM STEP 3 AUTO LED WALK TEST 1 Allthe LEDS will turn OFF 2 Allthe LEDS will turn ON for 1 second one by one in the following sequence STAND BY OPERATE gt TIMER gt FILTER COOL gt HEAT 3 In PRX all the LEDS will turn ON for 1 second one by one in the following sequence 18 c gt 20 gt 22 c gt 24 c gt 26 c gt 28 c gt 30 c gt High IFAN gt Auto IFAN gt Med IFAN gt Low IFAN gt STAND BY gt TIMER gt FILTER gt COOL gt HEAT e STEP 4 AUTO REALY WALK TEST All relays will energize one by one in the following sequence COMPRESSOR OUTDOOR FAN R V gt HEATER 1 HEATER2 INDOOR WATER PUMP SWING or OUTDOOR WATER PUMP gt INDOOR FAN LOW gt MID gt HIGH When the relay walk test is completed the next test will start automatically f STEP 5 FREQUENCY TESTING If the frequency measuring process fails the COOL LED will t
19. V fault is defined when ICT decreases more than 5C In this case the COMP will stop and the SB LED will blink The fault is reset after switching to SB or after mode change 11 3 8 General Features a Allowed control target range for RAT is SPT 1 C Whenever the unit is changed from COOL DRY STBY mode to HEAT mode or vice versa the procedures below are followed Stop COMP for 3 Change RV state Start COMP if necessary SM VAR 1 A 1 GB 11 7 CONTENT CONTROL SYSTEM 11 4 11 4 1 11 4 2 Cooling Mode Cooling Mode General a Mode Definition Mode COOL AUTO at Cooling Temp Selected desired temperature Fan HIGH MED LOW AUTO Timer Any I FEEL ON or OFF Room Temperature RT is detected by e RAT in normal operation or e RCT R C sensor in I FEEL mode Indoor Coil Temp is detected by ICT Outdoor Coil Temp is detected by OCT Control Functions a COMP ON OFF COMP Operation 0 5 OFAN Operation e In normal operation OFAN operates together with the COMP IFAN Operation e FAN will operate in ANY speed regardless the ICT or COMP state speed will be determined according to user selection or AUTO FAN logic RV and HEATERS outputs e RV and HEATERS are in OFF state in COOL mode SM VAR 1 A 1 GB CONTENT CONTROL SYSTEM 11 43 Sequence Diagrams a Maintaining room temp at desired level by comparing RT and SPT with user defi
20. aaapdcwitadsandiedmanis 2 1 3 RATING CONDITIONS u Lu Tanu Su QS asum h qusa 3 1 4 OUTLINE DIMENSIONS U 4 1 5 PERFORMANCE DATA amp PRESSURE CURVES 5 1 6 SOUND LEVEL nennen 6 1 fa ELECTRICAPIDATA u aioe eet late 7 1 B WIRING DIAGRANS U U u uu 8 1 9 REFRIGERATION DIAGRANMS l U u uu 9 1 10 TROUBLESHOOTING 10 1 TE CONTROL SYSTEM su ir in ci Datei Did ias Sete Ln sQ a Su ua au 11 1 12 EXPLODED VIEWS AND SPARE PARTS LISTS 12 1 13 APPENDIXA u u Y I Q U S yi sS huasi aquya tu i 13 1 SM VAR 1 A 1 GB i CONTENT Prirwell INTRODUCTION 1 1 1 2 1 3 1 4 1 5 INTRODUCTION General The new VAR consule unit is an ST cooling only and RH Heating by electrical element model The new VAR consule is available as LED display types featuring esthetic design compact dimensions and low noise operation Main Features The VAR series benefits from the most advanced technological innovations namely R410A models Microprocessor control Back curve centrifugal fan allowing low noise level operation Easy installation and service Compact dimensions
21. de Protections a Indoor Coil Defrost Mode COOLING DRY AUTO Temp Selected desired temp Fan Any Timer Any I FEEL ON OFF Control Function Protects the indoor coil from ice formation at low ambient temperatures ICT Aene OFAN orr COMP ore IFAN off 5 min minimum for each COMP starting t2 OFAN cycling alternate between ON and OFF every 30 sec for 20 min maximum t3 COMP and OFAN stops for 10 min minimum SM VAR 1 A 1 GB CONTENT 11 23 CONTROL SYSTEM Prirwell b High Pressure Protection Mode AUTO COOLING or DRY Temp Selected desired temperature Fan Any Timer Any I FEEL ON or OFF Control Function To protect the COMP from the high pressure build up in the outdoor coil during normal cooling operation by switching OFF the IFAN and COMP OCT c 68 66 61 55 52 COMP OFAN IFAN OPER LED 11 24 For all models except WAX amp P2000 For WAX amp P2000 models I OFF COMP is forced OFF COMP is forced OFF eese oen OFAN is forced ON Any IFAN forced L to LOW 2 r NOTE The ICT is also monitored during COOL and DRY modes in case the RV control circuit is faulty Whenever ICT reaches 70 C which indicates a high pressure in the indoor coil th
22. e COMP will be forced OFF automatically The COMP can be turned ON again only after the ICT is under 70 C again and after the 3 min COMP ON delay time The OPER LED will not blink in this case CONTENT SM VAR 1 A 1 GB Frirwell CONTROL SYSTEM 11 12 2 Heating Mode Protections a Outdoor Coil Deicing excluding RH Group Mode Temp Fan Timer I FEEL HEATING AUTO at heating Selected desired temperature Any Any Any Control function To protect the outdoor coil from ice formation by controlling COMP amp RV operation 1 SM VAR 1 A 1 GB Deicer Activation Algorithm a b Static deicer threshold is 5 C Dynamic deicer threshold changes of 3 C in 3 minutes in the OCT temperature In first COMP activation after SB or OFF if OCT lt 0 C min time to first deicer is 10 min else 40 min In a case of reading 3 successive OCT values below 10 C and previously 3 successive OCT values of 43 C 4 7 K the unit will activate deicing procedure 11 25 CONTENT CONTROL SYSTEM 2 VIlULoUUIS c DST DDT COMP OFAN except WAX all SH units RC or WAX units RV IFAN mu m IFAN HE OPER 11 26 LED l lt DI note 2 OFF 30s 30s ON gt lt lt DT L IFAN is forced to Low Speed ON ANY HEs are forced ON
23. ling only cooling and heating by heat pump e SH group Cooling and heating by heat pump and supplementary heater e RH group Cooling heating by heaters only 11 1 2 Model Plug Settings Before installation make sure to set the model plug conforming to the suitable group GROUP J Seting 2 Setting Model Plug location of the jumpers SM VAR 1 A 1 GB 11 1 CONTENT CONTROL SYSTEM Arirwell 11 1 4 Main PCB Controller Indoor Pump Outdoor Pump Fuse 3 454 Indoor Fan Electrical Heaters P Electrical Heaters N Outdoor Unit Connection Power Supply Connection F gt RCW Connection Swing 85 Room Sensor Indoor Coil Sensor p Model Outdoor Coil Sensor Level Connection to Display Cable IR Jumper SM VAR 1 A 1 GB Prirwell CONTROL SYSTEM 11 1 5 Display Board LEXAN A B E F G H 11 1 6 Display Board Assembly gt z 7 11 1 7 Legend A HEATING Lights on during operation Heating and filtration of the air in the room Sustainment of required ambient temperature B COOLING Lights on during operation Cooling dehumidification and filtration of the air in the room Sustainment of required ambient temperature C VENTILATION Lights on during operation The unit is running in ventilation mode only D MO
24. ned IFAN speed RT SPT c COMP WVL OFF OFAN orr USER FAN SPEED IFAN orF SM VAR 1 A 1 GB 11 9 CONTENT CONTROL SYSTEM b Maintaining room temp at desired level by comparing RT and SPT with AUTO IFAN ON COMP WVL OFF OFAN IFAN RV JorF 11 10 SM VAR 1 A 1 GB CONTENT rirwell CONTROL SYSTEM 11 5 Heating Mode 11 5 1 Heating Mode General a Compensation Procedure When I FEEL is OFF during HEAT mode RT RAT CTV When I FEEL is ON during HEAT mode RT RCT Type of Indoor Wall Mounted Mobiles Floor Ceiling 0 C No compensation will be activated in Forced operation modes b IFAN operation rules for RC and SH groups 1 Asa general rule for RC and SH groups IFAN will 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 When ICT is faulty When the compressor switches from OFF to ON excluding deicing IFAN will be on in ANY speed When the compressor switches from ON to OFF the IFAN will change to LOW speed for 30 seconds and then it will be off 2 In SH or RC group IFAN will operate for Min 30 sec according to 1 above after HEs are turned off where in a case it has to be OFF it will be forced to LOW speed SM VAR 1 A 1 GB 11 11 CONTENT CONTROL
25. nser SM VAR 1 A 1 GB 9 1 CONTENT 10 TROUBLESHOOTING TROUBLESHOOTING No SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION Power supply indicator 1 Red LED does not light up No power supply Check power supply If power supply is OK check display and display wiring if OK replace PCB Indoor fan does not start Green LED lights up 1 PCB problem 2 Capacitor 3 Fan motor 1 Switch to HIGH speed and check indoor FAN motor voltage to be higher then 198VAC please also make sure ther is no obstical jamming the fan in this case remove it In case that the voltage is it s significanly lower replace PCB 2 In case the fan is not blocked and the voltage is ok Replace the indoor fan capacitor 3 If it still want run replace the indoor fan motor Indoor fan works when unit is OFF Compressor does not start PCB problem Electronics control problem or protection Replace controller Perform diagnostics and follow the actions described below Compressor stops during 5 operation and Green LED remains on 1 0K temperature is in set point 2 Electronic control or power supply problem 1 0K 2 Perform diagnostics and follow the actions described below Compressor is ON but outdoor fan does not work SM VAR 1 A 1 GB 1 OK unit is in High pressure protection 2 PCB Problem or outdoor fan capacitor motor CONTENT 1
26. rol H W Hardware ICP Indoor Condensation Pump ICT Indoor Coil Temperature RT2 sensor IF IFAN Indoor Fan IR Infrared LEVEL1 Normal Water Level LEVEL2 3 Medium High Waterlevel LEVEL4 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 Return Air Temperature RT1 sensor RC Reverse Cycle Heat Pump R C Remote Control RCT Remote Control Temperature RH Resistance Heater RT Room Temperature i e RCT in IFEEL mode RAT otherwise RV Reversing Valve SB STBY Stand By Sec Second time Sect Section SH Supplementary Heater SPT Set Point Temperature ST Standard Model with Cooling Only S W Software TEMP Temperature W O Without AT The difference between SPT and RT in Heat Mode AT SPT RT Cool Dry Fan Mode AT RT SPT 11 4 SM VAR 1 A 1 GB CONTENT Frirwell 11 3 11 3 1 11 3 2 11 3 3 11 3 4 CONTROL SYSTEM General Functions COMP Operation a For each Mode including POWER OFF amp SB a Min time delay of 3 min before COMP restarting excluding DEICING Mode see para 14 12 2 b The Min operation time of COMP under different operating conditions is Operation Mode Min Operation Time of COMP Heat Cool HP protection or Auto Modes Fan Dry Overflo
27. s room temp at desired level by controlling the 2 Stage Electric Heaters RT SPT in c SM VAR 1 A 1 GB 11 17 CONTENT CONTROL SYSTEM 11 10 11 10 1 11 18 Automatic Cooling or Heating Automatic Cooling or Heating General The AUTO Mode is for models with compressor and the WVL RH only The WVL ST RC and SH units do not work in AUTO Mode Mode Definition Mode AUTO Temp Selected desired temperature Fan Any Timer Any I FEEL ON or OFF Switching temperature between Cooling and Heating is SPT 3 C When the AUTO Mode is started with SPT 0 C the unit will not select Auto Heat or Auto Cool mode immediately Instead the unit will be in a temporary FAN Mode with IFAN operating at low speed The proper Auto Heat mode or Auto Cool will be started whenever the RT reaches SPT 1 C or SPT 1 C respectively For RC amp SH units Mode change between Auto Heat amp Auto Cool Modes is possible only after the COMP has been OFF during the last T minutes Auto Cool to Auto Heat For RH and WVL RH units Mode change between Auto Heat amp Auto Cool Modes is possible after the COMP HEs have been OFF during the last T minutes Auto Cool to Auto Heat COMP off for 3 min Auto Heat to Auto Cool HEs off for 3 min When unit is changed form Cool Dry Mode to Auto Mode the unit will continue to operate in Auto Cool Mode until the conditions for switching from Auto Cool to Auto Heat are satisfied
28. sabled The forced operation is activated when the mode button on the Display Board is used to switch the unit to COOL or HEAT mode The IFAN is always set to Autofan Speed in forced operation Set desired temperature selected Any Interact with Sleep Timer ON or OFF The Sleep mode is activated by using the SLEEP button on the R C In Sleep Mode the unit will automatically adjust the SPT to turn up down the room temperature RT gradually to provide maximum comfort for the sleeping user Sleep is treated as TIMER function Therefore the TIMER LED is activated similar to TIMER function SM VAR 1 A 1 GB 11 29 CONTENT CONTROL SYSTEM 11 14 SPT Adjustment Sleep Mode e In COOL AUTO COOL or DRY modes the SPT adjustment is positive from 0 to 3 C e In HEAT or AUTO HEAT modes the SPT adjustment is negative from 0 to 3 C e n other modes there is no SPT adjustment e The SPT adjustment is cancelled when the Sleep mode is cancelled 7 Hours Sleep operation Unit is turned to SB for Normal Sleep Mode I U ks after Sleep SPT 3 SPT 2 SPT 1 SPT SPT 1 SPT 2 SPT 3 Start 1 2 3 4 5 6 7 8 Time Hr Sleep NOTE If OFF timer is active the unit may go to SB before or after 7 hours of sleep operation 11 30 SM VAR 1 A 1 GB CONTENT rirwell CONTROL SYSTEM 11 14 1 Time Adjustment in SLEEP Mode In 10V4 the user can make use of the Off Timer to extend the Sleep Time from 7 hours to
29. sor b When RT gt SPT 2 and ICT gt 50 and the 4 7kQ resistor is not connected to the OCT OFAN will operate according to the following curve ON OFAN OF SM VAR 1 A 1 GB 11 13 CONTENT CONTROL SYSTEM 11 6 Heating RC SH Group Mode HEAT 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 c RV 11 14 SM VAR 1 A 1 GB CONTENT rirwell CONTROL SYSTEM 11 7 Heating RC or SH Group with Autofan 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 c RV 11 15 SM VAR 1 A 1 GB CONTENT CONTROL SYSTEM 11 8 Heating RH Group Mode HEAT AUTO 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 in c IFAN 30 11 16 SM VAR 1 A 1 GB CONTENT CONTROL SYSTEM 11 9 Heating RH Group with AUTOFAN Mode HEAT AUTO at Heating Temp Selected desired temperature Fan AUTO Timer Any I FEEL ON or OFF 11 9 1 Sequence Diagram Maintain
30. trol for 60 sec Values of Sensors Temperature VS Voltage DC C V C V C V C V ae 4446 6 3544 238 50 1334 4 436 8 3499 30 2232 52 1263 45 4354 o 3396 218 55 1228 x Tea e am 345 36 s 4 46 3002 38 4834 3 2 61 REST 353 2 722 1 569 7 2 w 9 4 i 5 839 SM VAR 1 A 1 GB CONTENT 1 099 1 069 1 04 1 011 0 983 0 956 0 929 0 904 0 879 0 854 0 831 11 35 CONTROL SYSTEM 11 16 11 36 System Diagnostics Pressing Mode button for 5 10 seconds in SB or any other operation mode will activate the DIAGNOSTICS mode acknowledged by 3 short beeps and lighting of COOL and HEAT LEDs In DIAGNOSTICS mode system failures will be indicated by the blinking of HEAT amp COOL LEDs The coding method is as follows e HEAT LED blinks 5 times in 5 seconds and then turns off for the next 5 seconds e COOL LED blinks during the same 5 seconds according to the following table CN Pebem i 12 eae Rrsdsomewd _ le 2 5 4 disconnected 5 Rmisoeed 5 6 6 7 RT2tempreadngdossntchane Po 5 Rmideometd o 9 10 11 RTS temp reading doesnt change s 42
31. urn ON In order to move to the next step press ON OFF button on the remote control g STEP 6 INPUT TEST The test purpose is to check the analog real time indicators thermistors LEVEL and clock according to the table below LED Indicator Condition for LED to be ON STBY LED Room thermistor 4 25 c OPER LED Indoor coil thermistor z 25 c h STEP 7 TIMING RESET TEST WATCH DOG The test purpose is to verify that the CPU rise time after power failure is between 1 to 3 sec test results are indicated on the LEDS STAND BY OPER TIMER and FILTER turning ON one by one The results of the test are coded as follows Pass condition 1 sec STAND BY and OPER are turned ON 2 sec STAND BY OPER and TIMER are turned ON 11 34 SM VAR 1 A 1 GB CONTENT Fail condition 0 sec STAND BY is turned ON 3 sec STAND BY OPER TIMER and FILTER are turned ON CONTROL SYSTEM When the timing reset test is completed the next test will start automatically i STEP 8 MEMORY TEST EEPROM The test purpose is to check if the memory is functioning correctly The test result is reported by using the STAND BY and FILTER LEDS LED Indicator Condition for LED to be ON STAND BY LED Test passed FILTER LED Test failed AT THIS POINT THE SELF TEST IS COMPLETED In order to terminate Self Test mode the User can change the unit setting from COOL Mode LOW FAN to COOL Mode MED FAN or to wait without using the remote con
32. w Protection Modes or Mode Change IFAN operation a Min time interval between IFAN speed change in AUTOFAN Mode is 30 sec Min time interval between IFAN speed change in H M L Mode is 1 sec IFAN speed in Heat Cool AUTOFAN Mode is determined according to the following chart IFAN speed 1 2 3 4 c Where in Heat Mode AT SPT in Cool Mode AT RT SPT OFAN Operation Min time interval between OFAN ON OFF state changes is 30 sec HE Operation a Min Heaters ON or OFF time is 30 sec b Heaters can never be in operation while IFAN is OFF c In RH group HE 1 and HE 2 will be activated only when COMP is not operating except in Dry Mode SM VAR 1 A 1 GB 11 5 CONTENT CONTROL SYSTEM 11 3 5 Protections High pressure protection is applicable to all operating modes b Deicing control is valid in Heat and Auto Heat Modes only c Defrosting control is valid in Dry Cool and Auto Cool Modes 11 3 6 Thermistors Operation a Return air Temp is detected by RAT in normal Mode or by RCT R C sensor in I FEEL Mode b Indoor Coil Temp is detected by ICT c Outdoor Coil Temp is detected by OCT d Definition of thermistor faults 1 Thermistor is disconnected the thermistor reading is below 30 C 2 Thermistor is shorted the thermistor reading is above 75 C 3 Thermistor Temp reading doesn t change a This test is performed only once after a unit is switched from
Download Pdf Manuals
Related Search