TECHNICAL DATA & SERVICE MANUAL SPLIT SYSTEM AIR
Contents
1. DI 40 or 10 DT 5 N a Activate DDt setting Routine Start counting TLD DTF 0 2 AX 2 Li OCT gt DOC Yes Pe DDT and DTF information from Deicing A Dynamic Threshold setting routine 1 TLD gt DI pt amp e amp OCT DDT PS OCT DST No during last 3 minutes during last minutes SE A lt 40 deg Y Y Yes Yes Y v Deicer activation Deicer activation see Notes see Notes E gi Su TT gt DT TimeD lt LDT gt DT TimeD gt No lt or No rd c LDT DTmin T Yes Yes Y Y v DI TLD DIT DI TLD DIT DI TLD 4 No DI gt Dimin Yes Y DI DImin _ p l a No DI gt Dimax gt Yes v DI DImax i Y DT LDT MW BS fi X m 22 ES ES 1st COMP start deice complete _ 2 Yes No Reset TLD cnt to 0 0 IFAN OFAN speed change Si ar 2 le Reset SCT cnt to 0 0 2 TLD gt TST a AND 2 SCT SCD 7 Yes SS No Y DDT OCT TempD 1 Po 1 DDT and information AT to main algorithm fee ey ee Explanation The Ice Forming Detection will be done by two algorithms 1 In Dynamic Temp Detection the ice formation will be detected by i Compare the OCT with a Deicing Dynamic2. and outdoorunt E defective doesn t mns Push the button sw ich under the 1 C Check rem ote controlunit Try to mn w ih anotherrem ote contolunit Fistrem ote contolunt 5 detective Check forresdue buildup on tansm iterofrem ote contmlunt Check forresdue buikup on pud TIUS em of ndoorunt C tansm iter 21 D Check fuse on the ndoorPCB M res tance of indoor and outdoor fan m otorw ndng Check fuse on ndoorPCB 8 forcontnuiy Measure restance of Check opetatbn hm p to see if com pressorm otorw nding Ight 5 ON Lights OFF OK l M easure coiliesstance ofpower M easure resistance ofprm ary and secondary w nding of tiansfom er n outdoorunt OK doorPCB Assv 3 detective ae E Check TM ER on the remote controlunit Ti eri tumed On Check to see YES on rem ote control Cancelthe tn erm ode push the buttom CLEAR 22 5 2 3 Only outdoor unit does not run A Check setting tem perature COOL HI AT wom tem perature too bw E wom tem perature too high Try to bwersettng tem perature by Try to ase settng tem perature by tem perature setting button tem perature setting button Outdoorunt still does Outdoorunt still does not run not run Try to use another mem ote Try to use anotheriem ote contoluni contioluni Remote contmlunt E defect
3. rctallic sort A F 3 Fiori ian rio o wom COME sor ond WA ober pols Metallic part Se Insun kaska Fig 4 6 2 Checking Continuity of Fuse on PCB Ass y Remove the PCB Ass y from the electrical component box Then pull out the fuse from the PCB Ass y Fig 5 Check for continuity using a multimeter as shown in Fig 6 PCB Ass v G 6 3 Checking Motor Capacitor Fig 5 Fuse Remove the lead wires from the capacitor terminals and then place a probe on the capacitor terminals as shown in Fig 7 Observe the deflection of the pointer setting the resistance measuring range of the multimeter to the maximum value Fuse The capacitor is good if the pointer bounces to a great extent Fig 6 and then gradually returns to its original position The range of deflection and deflection time differ according to the capacity of the capacitor Multimeter LN Compressor motor capacitor Fan motor capacitor Fig 7 29 t Technibel Elwmatization R D 28 Reyrieux BP 131 01601 Tr voux CEDEX France T l 04 74 00 92 92 Fax 04 74 00 42 00 R C S Bourg en Bresse B 759 200 728
4. COMP OFAN and IFAN are mainly controlled by the value of RT SPT In the graph above the IFAN is operating in Auto Fan speed mode Therefore the IFAN speed changes automatically according to the RT SPT Note 1 The 30s IFAN operation is for purging the heat from the in coil after COMP has stopped Note 2 The IFAN will not be turned on until the in coil temperature is high enough as shown in the graph below to prevent the unit from supplying cool air IFAN Speed ICT In coil Temperature Any Hi Med or Low fan speed which is selected by the user In Auto Fan Speed Mode the fan speed is selected by the unit automatically instead Low The indoor fan is forced to operate at low speed 30 35 40 ICT c 4 3 Auto Cool Heat Mode Operation RT SPT c Auto Heat Mode Auto Cool Mode Auto Heat Mode In Auto Mode the unit switches between the Auto Cooling Mode and Auto Heating Mode automatically to maintain the room temperature RT at the set point temperature SPT 10 4 4 Dry Mode Operation RT SPT c DRY ON DRY DRY OFF LOW IFAN oec 5 minutes COMP ON time i ON v cce 34 amp OFAN _JOFF L L Max 15 minutes 13 5 min Max 15 minutes 6 min 4 9 4 14 Note 1 7 Note2 7 In Dry Mode the unit operates in
5. Nominal output 27 Running Amps 0 12 Power input 26 Coil resistance Ambient temp 25 C GRY WHT 545 630 WHT VLT 92 105 VLT YEL 62 71 GRY BRN 78 90 Safety devices Type Thermal protection Operating temp 150 10 Automatic Run capacitor 1 450 Heat Exch Coil Aluminium plate fin Copper tube 1 1 4 Face area 0 185 Thermistor Coil sensor TH1 Type NTC sensor Resistance at 25 C KO 10 x 3 Thermistor Room sensor TH2 Type NTC sensor Resistance at 25 C KO 10 5 DATA SUBJECT TO CHANGE WITHOUT NOTICE 2 DIMENSIONAL DATA KAF94RSTA T T T fi Il I I I I 1 Il 1 1 1 1 Unit mm 3 ELECTRICAL DATA 3 1 Electric Wiring Diagrams KAF94RSTA 7 oO 5 TE BRN O gt Od PNK 0 5 4 3 1 A n 5 413 1 LS EW c5 pom gt X CO MI GRN Y et Lat Ja SA T 3RN YE 2 AHT 3LU 2 D ANZ YI NA RED D pud WHT 2 BLK B BL
6. Temperature Threshold and ii Detect the drop in ICT which accompany the ice formation 2 The Static Temp Detection will be done by comparing the OCT with a Deicing Static Temperature Threshold The Deicing Data Record is used to determine the time delay between two deicing cycles In general the time delay will be increased if the last deicing cycle can be completed quickly 15 Indoor Coil High Pressure Protection in Heat Mode The in coil high pressure protection prevent the build up of high pressure at the in coil during heating operation ICT c Q U o gt 15 Q 8 U 3 8 jo mn Note The operation temperatures shown as A and B in the chart differ by models osi o ser also Li 16 4 8 Sleep Function Room temperature is automatically controlled to compensate for body temperature variations while sleeping This mode of operation is designed for maximal comfort in both COOL and HEAT modes RT Unit is turned to SB ion _ gt 7 12 Hours Sleep operation after Sleep SPT eee i SPT 1 4 SPT Sp ee SPI JL sie sted SPES 5 Ree _ Start 1 2 3 4 7 12 Time Hr Sleep 4 9 Daily Timer Function Unit can be programmed to be ON and OFF automatically at preset time everyday by using a remote controller The resolutions of the ON OFF timers are 10 min 4 10 IFEEL Function This feat
7. a mild cool mode to lower the humidity of the room In order to maintain a high efficiency in the drying operation without over lowering the room temperature excessively the Dry Mode is different from the Cool Mode in two ways 1 The IFAN is forced to operate at low speed only And the IFAN is turned off with the COMP 2 The unit operates in either the Dry on state or the Drv off state If RT SPT the unit will operate in Drv off state The COMP is forced to operate for 6 min after it has stopped working for 15 min If RT gt SPT the unit will operate in Dry on state The COMP is forced off for 3 5 min after it has been working for 15 min Note 1 COMP is forced off in Dry on state Note 2 COMP is forced to operate in Dry off state 4 5 Fan Mode Operation In Fan Mode the indoor fan is turned on to improve the air circulation in the room COMP and OFAN remain OFF all the time Note Ifthe user has selected the Auto Fan Speed setting the IFAN speed would be selected by the unit automatically according to the difference between RT and SPT as in Cool Mode 11 4 6 Protection Operations in Cool and Dry Modes 1 Indoor Coil Defrost Protection The in coil defrost protection can prevent the ice formation at the in coil when the ambient temperature is low ICT c 12 2 Outdoor Coil High Pressure Protection The out coil high pressure protection prevent the build up of high pressure at the out coil duri
8. K 3LK gt a d 3 2 System Wiring Diagrams Cooling only Models INDOOR POWER UNIT SUPPLY UNIT v D 63 1 DC OUTDOOR Heat Pump Models INDOOR POWER UNIT SUPPLY O 95 OUTDOOR UNIT e QD 2 TX FN NA NL O Sr sa RESISTOR b E CABLI Heat Pump Models disconnect the resistor from the indoor unit twin wire cable and connect the suppied twin wire cable instead 4 FUNCTION 4 1 Cool Mode Operation RT SPT c 3 2 1 COMP OFAN IFAN ON RV In Cool Mode the operation of the Compressor COMP Outdoor Fan OFAN and Indoor Fan IFAN are determined by the difference between the Room Temperature RT and the Set Point Temperature SPT as in the graph above Notes 1 In this graph the IFAN is operating in the Auto Fan Speed setting If the user has selected the low medium or high fan speed the IFAN will run constantly at that speed only 2 In addition to the value of RT SPT the operations of the relays are also controlled by protection delays For example a the minimum On Off time of the COMP is 5 min and 3 min respectively and b the IFAN can change speed only after it has operated at the same speed for 30 sec 4 2 Heat Mode Operation RT SPT c The Heat Mode operation is similar to the Cool Mode operation The
9. a PowerSuppl W ies Chmp the grounding tem nalof the power pig wih clp of the nsubton wsstance tester and measure the resistance by a probe on either of two powertem 1 Then abo measure resistance between the gmundhg and otherpowertem hab Fig 1 b ndoorUnit C bmp an alm nim phte fn orcopperw ih the of the insubtbn tester and measure the resBtance by phcng a probe on each tem nal screw where power supply Ines are connected on the tem nal phte fy 2 c OutdoorUnit Chmp an alm num phte fn orcopperw ih the bad of the nsuhbtbn wsstance tester and measure the resBtance by phcng a probe on each tem nal screw on the tem nalphbte Fi 2 Note thatgmund Ine tem nalshoud be skpped easurem entof hsulation resistance forelectricalP arts Disconnect the bad wies of the desied ekctre par fom tem nalphte capacitor etc Sin iary disconnect the connector Then m easure the nsubtbn resistance Fi 3 and 4 Referto Ect W img igram the probe cannot enter the poks because the hob 5 too nanow the use a probe witha thnnerpmn 28 6 CHECKING ELECTRICAL COMPONENTS 6 1 Measurement of Insulation Resistance power plug Local supply Insulation tester The shape ofthe powerplg may 4 thatofthe aircondibnerwhih you are serving plac ng alice KI losler Fg 2 Trops Wa U
10. ain on your back Sharp edges or thin aluminium fins on the air conditioner can cut your fingers When installing In a ceiling or wall Make sure the ceiling wall is strong enough to hold the unit weight It may be necessary to build a strong wooden or metal frame to provide added support In a room Properly insulate any tubing run inside a room to prevent sweating which can cause dripping and water damage to walls and floors In moist or uneven locations Use a raised concrete base to provide a solid level foundation for the outdoor unit This prevents damage and abnormal vibrations In area with strong winds Securely anchor the outdoor unit down with bolts and a metal frame Provide a suitable air baffle In a snowy area for heat pump type systems Install the outdoor unit on a raised platform that is higher than drifting snow Provide snow vents When connecting refrigerant tubing Keep all tubing runs as short as possible Use the flare method for connecting tubing Apply refrigerant lubricant to the matching surfaces of the flare and union tubes before connecting them screw by hand and then tighten the nut with a torque wrench for a leak free connection Check carefully for leaks before starting the test run NOTE Depending on the system type liquid and gas lines may be either narrow or wide Therefore to avoid confusion the refrigerant tubing for your particular model is specifi
11. be responsible for improper installation or maintenance service including failure to follow the instructions in this document SPECIAL PRECAUTIONS During installation connect before the refrigerant system and then the wiring one proceed in the reverse orden when removing the units When wiring ELECTRICAL SHOCK CAN CAUSE SEVERE AN PERSONAL INJURY OR DEATH ONLY A QUALIFIED EXPERIENCED ELECTRICIANS SHOULD ATTEMPT TO WIRE THIS SYSTEM Do not supply power to the unit until all wiring and tubing are completed or reconnected and checked to ensure the grounding Highly dangerous electrical voltages are used in this system Carefully refer to the wiring diagram and these instructions when wiring Improper connections and inadequate grounding can cause accidental injury and death Ground the unit following local electrical codes The Yellow Green wire cannot be used for any connection different from the ground connection Connect all wiring tightly Loose wiring may cause overheating at connection points and a possible fire hazard Do not allow wiring to touch the refrigerant tubing compressor or any moving parts of the fan Do not use multi core cable when wiring the power supply and control lines Use separate cables for each type of line When transporting Be careful when picking up and moving the indoor and outdoor units Get a partner to help and bend your knees when lifting to reduce str
12. ed as narrow tube for liquid wide tube for gas When servicing Turn the power OFF at the main power board before opening the unit to check or repair electrical parts and wiring Keep your fingers and clothing away from any moving parts Clean up the site after the work remembering to check that no metal scraps or bits of wiring have been left inside the unit being serviced Ventilate the room during the installation or testng the refrigeration system make sure that after the installation no gas leaks are present because this could produce toxic gas and dangerous if in contact with flames or heat sources Table of Contents 1 SPECIFICATIONS 1 1 1 2 Unit Specifications Major Component Specifications 2 DIMENSIONAL DATA 3 ELECTRICAL DATA 3 1 Electric Wiring Diagrams 3 2 System Wiring Diagrams 4 FUNCTION 4 1 Cool Mode Operation 4 2 Heat Mode Operation 4 3 Auto Cool Heat Mode Operation 4 4 Dry Mode Operation 4 5 Fan Mode Operation 4 6 Protection Operations in Cool and Dry Modes 4 7 Protection Operations in Heat Mode 4 8 Sleep Function 4 9 Daily Timer Function 4 10 IFEEL Function 4 11 Manual Unit Control and Led Indicator 4 12 Recovery from Power Failure 5 TROUBLESHOOTING 5 1 5 2 5 3 5 4 5 5 Check before and after Troubleshooting Air conditioner does not operate Some part of Air conditioner does not operate Air conditioner operates but abnormalities are observed If a Sensor is defect
13. erature of suction and is small Possibility of Charge refrigerant gt discharge air of air conditioner gas shortage gas Temperature difference between suction and discharge air is large enough approx 10 deg or more YES Set fan speed to either HIGH or MEDIUM Fan speed is set to LOW Check for clogging of air filter w Clean filter Air filter is clogged Reduce cooling or heating Review cooling load estimate load or replace the air if performance of air conditioner is conditioner with larger normal capacity 5 4 3 Excessive cooling or heating Set temperature to higher or Set temperature T Suitable NO s lower value using temperature setting buttons of the remote control unit Remote control unit is placed where Change position of remote control unit it can detect room temperature gt properly 26 5 5 If a Sensor is defective 5 5 1 Thermistor TH1 or TH2 is defective e Standby bm p on 8026116 of indoor unt is binkng e Them storTH1 and TH2 are defectve e Repkce them stor Alam signal Stanbv hm p on the fiont stie ofthe ndooruntw ilblnk when the them btr B defectve Atthe sam e tm e the outdooruntw ilstop mdooroperate ony brventibtbn 27 The hsubtbn good condton if the resistance exceeds 2M
14. he next operation mode is selected in the order SB gt Cool Mode gt Heat Mode gt SB gt MODE BUTTON Cool Heat SB 4 12 Recovery from Power Failure Last unit settings SPT operation mode louver settings etc are saved in the EEPROM in the unit In case of power failure these settings are restored automatically 18 5 TROUBLESHOOTING 5 1 Check before and after Troubleshooting Num Hazardous voltage can cause ELECTRIC SHOCK or DEATH Disconnect power or turn off circuit breaker before you start checking or servicing a Check power supply wiring Check that power supply wires are correctly connected to terminals L and N on the terminal plate in the indoor unit b Check inter unit wiring Check that inter unit wiring is correctly connected to the outdoor unit from the indoor unit c Check power supply Check that voltage is in specified range 10 of the rating Check that power is being supplied d Check lead wires and connectors in indoor and outdoor units Check that coating of lead wires is not damaged Check that lead wires and connectors are firmly connected Check that wiring is correct 19 5 2 Air conditioner does not operate 5 2 1 Circuit breaker trips or fuse blows A When the circuit breaker is set to ON it is tripped soon Resetting is not possible There is a possibility of ground fault Check insulation resistance If resistance va
15. he voltage is too low 24 5 4 Air conditioner operates but abnormalities are observed 5 4 1 Operation does not switch from HEAT to COOL or COOL to HEAT Remote control unit may be defective Measure resistance of solenoid coil Receiver Ass v may be defective winding 20 S 4 way valve COOL to HEAT HEAT to COOL e Check volege between tem hab 2 6 mustbe 0 Vot e Check volage between tem nab 2 andNos mustbe 230 VAC No volage appears IndoorPCB Assy defective Check Operaton Selkctor on ndoorunt The ndoorunt mdoorPCB e Push the peratbn seEctoron the E defcti nd i 1 ndooruni panne doesn t mns Check rem ote controlunit Try to run using another remote control unit YES First remote control unit is defective Check for residue duildup on transmitter of remote control unit Clean transmitter Check for residue buildup on remote control receiver on front of indoor unit 25 5 4 2 Poor cooling or heating Check position of remote control unit YES Cool or warm air from air conditioner Change position of remote reaches position directly control unit Wide and narrow tubes between Insulate both wide and narrow indoor unit and outdoor unit are tubes separately and then insulated tape together YES Temperature difference Measure temp
16. i TECHNICAL DATA 3e Technibel amp SERVICE MANUAL Be 20 2464270 INDOOR UNIT KAF9ARSTA SPLIT SYSTEM AIR CONDITIONER Model No Product Code No KAF94R5TA 387105948 KAF94RSTA 0 8180 359 0 06 2005 IMPORTANT Please read before installation This air conditioning system meets strict safety and operating standards For the installer or service person it is important to install or service the system so that it operates safely and efficiently For safe installation and trouble free operation you must Carefully read this instruction booklet before beginning Follow each installation or repair step exactly as shown Observe all local state and national electrical codes Pay close attention to all warning and caution notices given in this manual The unit must be supplied with a dedicated electrical line AN This symbol refers to a hazard or unsafe practice which can result in severe personal injury or death AN CAUTION This svmbol refers to a hazard or unsafe practice which can result in personal injurv or product or propertv damage If necessarv get help These instructions are all vou need for most installation sites and maintenance conditions If you require help for a special problem contact our sale service outlet or your certified dealer for additional instructions In case of improper installation The manufacturer shall in no way
17. ive 6 CHECKING ELECTRICAL COMPONENTS 6 1 6 2 6 3 Measurement of Insulation Resistance Checking Continuity of Fuse on PCB Ass y Checking Motor Capacitor Page 1 SPECIFICATIONS 1 1 Unit Specifications KAF94RSTA 220 240 V 50 Hz Voltage ratino 230 V Performance Capacity See catalogue with the requested matching Air circulation High Med Low m h 400 360 300 Controls Temperature controls Microprocessor C thermostat Control unit Wireless remote control unit Timer ON OFF 24 hours Fan speed 3 and Auto Airflow direction Horizontal Manual Vertical Manual Air Filter Washable Anti Mold Power noise level High Med Low 51 48 42 Refrigerant tubing connections Flare type Refrigerant Narrow tube in 6 35 1 4 tube diameter Wide tube in 9 52 3 8 Refrigerant R410A Refrigerant tube kit Air clean filter Optional Optional Dimensions amp Weig Unit dimensions Height Width Depth Package dimensions Height Width Depth Weight Net Shipping Shipping volume DATA SUBJECT TO CHANGE WITHOUT NOTICE 1 2 Major Component Specifications KAF94RSTA Controller PCB Part No WSA 128 Controls Microprocessor Control circuit fuse 250 V 3 15 A Remote Control Unit RC 2 RC RC 7 RC Fan amp Fan Motor Cross flow Dia and lenght 1 100 L 410 Fan motor model Q ty K35406 M01892 1 No of poles rpm 230 V High 4 1196
18. lue is 2MQ or less insulation is defective NO WARNING Set circuit breaker to OFF QD Remove inter unit wires from terminal plate in outdoor unit NO Measure insulation resistance of outdoor unit Insulation of outdoor unit is defective Measure insulation resistance of electrical parts in outdoor unit B Remove inter unit wires from terminal plate in indoor unit NO Insulation of Then pull the power plug out of indoor unit the wall outlet is defective Measure insulation resistance of indoor unit Measure insulation resistance of electrical parts in indoor unit B Circuit breaker trips in several minutes after turning the air conditioner on There is a possibility of short circuit NO Replace with suitable one larger capacity Check capacity of circuit breaker Capacity of circuit breaker is suitable In case of Heating operation Measure resistance of outdoor fan Measure resistance of 4 way valve s motor winding winding Measure resistance of compressor motor winding 20 5 2 2 Neither indoor nor outdoor unit runs Power is not supp led C mUtbreakeri Check power supp topped Resetbreaker Power beng suppled to the W ait for recovery ndoorunt Power file orcontactpower com pany B Check Push bottom selector in the mdoorunt The ndoorunt doorPCB Ass
19. ng cooling operation OCT fc 61 4 RR A I 55 def 1 52 1 JR led sea deseen etes E Josie COMP Jorr COMP is forced OFF I 1 I OFAN follow operation of COMP gt 1 OFAN is forced ON Note ANY I I L IFAN is forced LOW I I I OFAN IFAN OPER LED Note 1 In some applications the outdoor fan and the compressor are controlled together by the COMP relay output from the controller In this case it will take more time for the out coil to cool down during the high pressure protection because the outdoor fan will be turned off with the compressor instead of working as in the graph above 13 4 7 Protection Operations in Heat Mode 1 Outdoor Coil Deice Protection The deice process is controlled by an Ice Detection Algorithm IDA The IDA is an unique control algorithm incorporated to maintain optimal utilization of the heat pump capacity especially in below zero outdoor temperature condition The out coil deicing will be activated not only by static temperature detection as normally done but also while ice forming is detected on the out coil l 5 N COMP to
20. ure is provided if the unit is used together with a remote controller with the I FEEL function When this function is selected the remote controller sends the room temperature measured by its build in thermistor to the air con for more accurate temperature control 17 4 11 Manual Unit Control and Led Indicator The push button switch and the LED indicators on the display panel let the user to control the unit operation without a remote controller Their operations are provided below LED indicators Lights up when the Air Conditioner is connected to power and ready to receive the R C commands Blinks continuously in case of any thermistor failure Lights up in operation mode Note OFF in standby mode Blinks for 0 5 sec to announce that a R C infrared signal has OPERATION been received and stored INDICATOR Blinks continuously during STAND BY INDICATOR e OCT High Pressure Protection Mode e Deicing in Heating Mode Lights up during Timer and Sleep operation Active On Off timer setting will become invalid after a power TIMER INDICATOR failure When this happens the unit is forced to restart in STBY mode and the Timer Indicator is blinked continuously until i the unit is switched to OPER Mode again or ii any message from the R C is received Push Button switches Use to cycle the operation mode of the A C unit among COOL HEAT and SB modes without using the R C Every time this switch is pressed t
21. ve Rem ote contmlunt E defectve 5 2 4 Only indoor unit does not run Indoor PCB Assy is defective 23 5 3 Some part of air conditioner does not operate 5 3 1 Only indoor fan does not run Check fan casing Remove foreign Fan cannot foreign matter on gt matter or repair Check fan rotation be turned Turn fan gently once or twice by hand Fan motor burnout i or foreign matter in Repair or replace bearings Measure resistance of indoor fan When fan speed is changed does motor winding applied voltage between lead wires BRN and WHT change as well Check fan motor capacitor PCB Ass y is defective 5 3 2 Only outdoor fan does not run Fan cannot be tumed Check fan casing fore gn m ateron s e Checkfanmtatbn nside materorispar Tum fan gently once ortw ice by hand Rem ove pein Fan motorbumout orfbreign matter Repairoriephce bearngs M easure wsstance ofoutdoor fan m otorw ndng e Check fan m otorcapacior 5 3 4 Only compressor does not run Check compressor motor Overload relay is working capacitor C1 Either OLR T or OLR A YES Measure resistance of Temperature of compressor compressor motor winding is abnormally high YES YES Refrigerant gas shortage Charge refrigerant gas R410A Measure Power supply voltage Rotor may be locked up T
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