Panasonic CS-ME7QKUA manual

© Panasonic Corporation 2013 Order No: PAPAMY1312045CE Indoor Unit CS-ME7QKUA Destination U.S.A. Canada Please file and use this manual together with the service manual for Model No. CU-5E36QBU, Order No. PAPAMY 1312037CE. PRECAUTION OF LOW TEMPERATURE In order to avoid frostbite, be assured of no refrigerant leak age during the installation or r [...]

2 TABLE OF CONTENTS 1. Safety Pr ecautions ............................................. 3 2. Specification ....................................................... 5 3. Features ............................................................... 7 4. Location of Controls and Components ............ 8 4.1 Indoor Un it ...................................[...]

3 CA UTION WA RNIN G WA RNIN G 1. Safety Precautions  Read the following “SAFET Y PRECAUTIONS” carefully bef ore perform any servicing.  Electrical work must be installed or serviced by a licens ed electrician. Be sure to use the correct rating of the power plug and main circuit for the model installe d.  The caution items stated here [...]

4 CA UTION 19. During installation, install the refrigerant piping properly before run the compress or. (Operation of compressor without fi xing ref rigeration piping and valves at opened condition will c ause suck-in of air, abnormal high pressure in refrigeration cycle and result in exp losion, injury etc.). 20. During pump down operation, stop t[...]

5 2. Specification Model Indoor CS-ME7QKUA Outdoor CU-5E36QBU Performance Test Condition ARI Power Supply Phase, Hz Single, 60 V 208 230 Min. Mid. Max. Min. Mid. Max. Cooling Capacity kW 1.80 2.01 2.90 1.80 2.01 2.90 BTU/h 6100 6900 9900 6100 6900 9900 Running Current A - 2.8 - - 2.5 - Input Power W 340 500 810 340 500 810 EER W/W 5.29 4.02 3.58 5.[...]

6 Model Indoor CS-ME7QKUA Outdoor CU-5E36QBU Drain Hose Inner Diameter mm (inch) 16.7 (5/8) Length mm (inch) 650 (25 -5/8) Indoor Heat Exchanger Fin Material Aluminium (Pre Coat) Fin Type Slit Fin Row x Stage x FPI 2 x 15 x 21 Size (W x H x L) mm (inch) 25.4 x 315 x 610 (1 x 1 2-3/8 x 24) Air Filter Material Polypropelene Type One-touch Power Suppl[...]

7 3. Features  Inverter Technology o Wider output power range o Energy saving o Quick Cooling o More precise temperature control  Environment Protection o Non-ozone depletion sub stances refrigerant (R410A)  Long Installation Piping o Long piping up to 82 ft (25 meters) for 1 room  Easy to use remote control  Quality Improvement o Ra[...]

8 4. Location of Controls and Components 4.1 Indoor Unit 4.2 Outdoor Unit 4.3 Remote Control[...]

9 5. Dimensions 5.1 Indoor Unit[...]

10 6. Refrigeration Cycle Diagram[...]

11 7. Block Diagram[...]

12 8. Wiring Connection Diagram 8.1 Indoor Unit[...]

13 9. Electronic Circuit Diagram 9.1 Indoor Unit[...]

14 10. Printed Circuit Board 10.1 Indoor Unit 10.1.1 Main Printed Circuit Board[...]

15 10.1.2 Power Printed Circuit Board 10.1.3 Indicator Prin ted Circuit Board[...]

16 11. Installation Instruction 11.1 Select the Best Location 11.1.1 Indoor Unit  Do not install the unit in excessive oil fume area such as kitchen, workshop and etc.  There should not be any heat source or steam near the unit.  There should not be any ob stacles bl ocking the air circulation.  A place where air circulation in the roo [...]

17 11.2 Indoor Unit 11.2.1 How to Fix In stallation Plate The mounting wall shall be stron g and solid enough to prevent it from the vibratio n. The center of installation plate sho uld be at more than  at right and left of the wall. The distance from installation plate edge to ceiling sho uld more than  . From installation plate left edge to[...]

18 11.2.3 Indoor Unit Installation 11.2.3.1 For the right rear piping 11.2.3.2 For the right bottom piping 11.2.3.3 For the embedded piping (This can be used for left rear pipi ng and bottom piping also.)[...]

19 11.2.4 Connect the Cable to the Indoor Unit 1. The insi de and outside connectio n cable can be connected without remo ving the front grille. 2. Unscre w the conduit cover and fix the conduit connector to conduit cover with lock nut, then secure it against chassi s. 3. Conne c tion cable between indoor u nit and outdoor unit should be UL listed [...]

20 11.2.5 Wiring Stripping and connecting requirement 11.2.5.1 Cutting and flaring the piping 1 Please cut using pipe cutter and then remove the burrs. 2 Remove the burrs by using reamer. If burrs are not removed, gas leakage may be caused. Turn the piping end down to avoid the metal powder entering the pipe . 3 Please make flare after inserting th[...]

21 12. Operation Control 12.1 Basic Function Inverter control, which equipped with a microcomputer in determining the most suitable operation mode as time passes, automatically adjusts output power fo r maximum comfort always. In order to achieve the suitable operation mode, the microcomputer maintains the set temperatur e by measuring the temperat[...]

22 12.1.4.2 Automatic Operation  This mode can be set using remote cont rol and the operation is decided by remote control setting temperature, remote control operation mode and indoor inta ke air temperature.  During operation mode ju dgment, indoor fan motor (with spee d of Lo-) is running for 30 second s to detect the indoor intake air tem[...]

23 [Heating] o According to indoor pipe temperature, a u tomati c heating fan speed is determi ned as follows.  Feedback control o Immediately after the fan motor started, f eedback control is performed on ce every second. o During fan motor on, if fan motor feedba ck ≥ 2550 rpm or < 50 rpm continue for 10 second s, then fan motor error cou[...]

24 12.4.2 Horizontal Airflow The horizontal airflow direction l ouvers can be adj usted manually by hand. 12.5 Quiet Operation (Cooling Mode /Cooling Area of Dry Mode)  Purpose o To provide quiet cooling operation compare to normal operation.  Control condition o Quiet operation start condition  When “Quiet” button at remote cont rol i[...]

25  Control contents o Fan speed auto  Indoor FM RPM depends on pipe temperature sensor of indoor he at exchanger. Auto fan speed is changed from normal settin g to quiet setting of respective fan speed. This is to reduce sound o f Hi, Me, Lo for 3dB. o Fan speed manual  Manual fan speed for quiet operation is -1 step from setting fan spee[...]

26 12.10 Indication Panel Note:  If POWER LED is blinking, the possible operation of t he unit are Hot Start, during Dei c e operation, operation mode judgment, or ON timer sampling.  If Timer LED is blinking, there is an abnormality operati on occurs.[...]

27 13. Operation Control (For Multi Split Connection) During multi split connection, indoor unit’s ope ration controls are same with single split conne ction unless specified in this chapter. 13.1 Cooling operation 13.1.1 Thermostat control  Capability supply to indoor unit is OFF (Expansion valve closed) when Intake Air Temperatur e — Inter[...]

28  For the 2nd judgment onwards o If indoor intake temperature - remote control setting temperature  5.4°F, if previous o perate in DRY mode, then continue in DRY mode, otherwise COOL mode is decided. o If -3.6°F ≤ indoor intake temperature - remote control setti ng temperature < 5.4°F, maintain with previous mode. o If indoor intake[...]

29 14. Servicing Mode 14.1 Auto Off/On Button 1 AUTO OPERATION MODE The Auto operation will be activated immediately once the Auto OFF/ON button is pressed. This operation can be used to operate air conditioner wi th limited func tion if remote control is misplace d or malfunction. 2 TEST RUN OPERATION (FOR PU MP DOWN/SERVICING PURPOSE) The Test Ru[...]

30 4 REMOTE CONTROL RECEIVING SOUND OFF/ON MODE The Remote Control Receiv ing Sound OFF/ON Mode will be activated if the Auto OFF/ON butt on is pressed continuously for more than 16 seco nds (4 “beep” sounds will occur at 16 th seconds to identify the Remote Control Receiving Sound OFF/ON Mo de is in standby co ndition) and pre ss “AC Reset?[...]

31 15. T roubleshooting Guide 15.1 Refrigeration Cycle System In order to diagnose malfunctions, make sure that there are no electrical problems before inspectin g the refrigeration cycle. Such problems include in sufficient insulation, problem with the power source, malfunction of a compressor a nd a fan. The normal outlet air temperature and p r [...]

32 15.1.1 Relationship between the condition of the air conditioner and pressure and electric current  Carry out the measurements of pressure, electric cu rrent, and tempe rature fifteen minutes after an operation is started.[...]

33 15.2 Breakdown Self Diagnosis Function 15.2.1 Self Diagnosis Function (Thr ee Digits Alphanumeric Code)  Once error occurred during operatio n, the uni t will stop its operation, and Timer LED blinks.  Although Timer LED goes off when power supply is turn ed off, if the unit is ope rated under a breakdown condition, the LED will ON again. [...]

34 15.3 Error Code Table[...]

35 Note: “ ○ ” – Frequency measured and fan spee d fixed The memory data of error code is erased when the powe r supply is cut off, or press the Auto Switch until “beep” sound heard following by pressing the CHECK button at remote control. Although operation forced to stop when abnormality d e tected, emergency operation is possible for[...]

36 15.4 Self-diagnosis Method 15.4.1 H11 (Indoor/Outdoor Abnormal Communication) Malfunction Decision Conditions  During startup and operati on of cooling and heating, t he data received from outdoor unit in indoor unit signa l transmission is checked whether it is no rmal. Malfunction Caused  Faulty indoor unit PCB.  Faulty outdoor unit P[...]

37 15.4.2 H12 (Indoor/Outdoor Cap acity Rank Mismatched) Malfunction Decision Conditions  During startup, error code appears when different ty pes of indoor a nd outdoor units are interconnected. Malfunction Caused  Wrong models interconnected.  Wrong indoor unit or outdoor unit PCBs mounted.  Indoor unit or outdoor unit PCBs defective.[...]

38 15.4.3 H14 (Indoor Intake Air Temp erature Sensor Abnormality) Malfunction Decision Conditions  During startup and operati on of cooling and heating, t he temperatures detected by the indoor intake air temperature sensor are used to determine sensor e r rors. Malfunction Caused  Faulty connector connecti on.  Faulty sensor.  Faulty P[...]

39 15.4.4 H15 (Compressor Temper ature Sensor Abnormality) Malfunction Decision Conditions  During startup and operati on of cooling and heating, t he temperatures detected by the outdoor compresso r temperature sensor are used to determine sensor e r rors. Malfunction Caused  Faulty connector connecti on.  Faulty sensor.  Faulty PCB. T[...]

40 15.4.5 H16 (Outdoor Current Transformer Open Circuit) Malfunction Decision Conditions  A current transformer (CT) is detected by checking the comp ressor running frequency ( ≥ rated frequency ) and CT detected input current (less than 0.65A) for continuou sly 20 seconds. Malfunction Caused  CT defective  Outdoor PCB defective  Comp[...]

41 15.4.6 H19 (Indoor Fan Motor – DC Motor Mechanism Locked) Malfunction Decision Conditions  The rotation speed detected by the Hall IC during fan motor operati on is used to determine abnormal fan motor (feedback of rotation > 2550rpm or < 50rpm) Malfunction Caused  Operation stops due to short circuit insid e the fan motor winding.[...]

42 15.4.7 H23 (Indoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operati on of cooling and heating, t he temperatures detected by the indoor heat exchanger temperature sensor are used to determine sensor e r rors. Malfunction Caused  Faulty connector connecti on.  Faulty sensor.  Faulty PCB.[...]

43 15.4.8 H27 (Outdoor Air Temper ature Sensor Abnormality) Malfunction Decision Conditions  During startup and operati on of cooling and heating, the temperatures detected by the outdoor air temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connecti on.  Faulty sensor.  Faulty PCB. Troubleshoo[...]

44 15.4.9 H28 (Outdoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operati on of cooling and heating, the temperatures detected by the outdoor pipe temperature sensor are used to determine sensor errors. Malfunction Caused  Faulty connector connecti on.  Faulty sensor.  Faulty PCB. Troublesho[...]

45 15.4.10 H30 (Compressor Discharge T emperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operati on of cooling and heating, t he temperatures detected by the outdoor discharge pi pe temperature sensor are used to determine sensor e r rors. Malfunction Caused  Faulty connector connecti on.  Faulty sensor. ?[...]

46 15.4.11 H32 (Outdoor Heat Exchanger Temperature Sensor 2 Abnormality) Malfunction Decision Conditions  During startup and operati on of cooling and heating, t he temperatures detected by the outdoor heat exchanger temperature sensor are used to determine sensor e r rors. Malfunction Caused  Faulty connector connecti on.  Faulty sensor. [...]

47 15.4.12 H33 (Unspecified Voltag e between Indoor and Outdoor) Malfunction Decision Conditions  The supply power is detec ted for its requir ement by the indoor/out door transmission. Malfunction Caused  Wrong models interconnected.  Wrong indoor unit and outdoor unit PCB s used.  Indoor unit or outdoor unit PCB defective. Troubleshoo[...]

48 15.4.13 H36 (Outdoor Gas Pipe Sensor Abnormalit y) Malfunction Decision Conditions  During startup and operati on of cooling and heating, the temperatures detected by the outdoor gas pipe temperature sensor are used to determine sensor e r rors. Malfunction Caused  Faulty connector connecti on.  Faulty sensor.  Faulty PCB. Troublesho[...]

49 15.4.14 H37 (Outdoor Liquid Pipe Te mperature Sensor Abnormality) Malfunction Decision Conditions  During startup and operati on of cooling and heating, t he temperatures detected by the outdoor liquid pipe temperature sensor are used to determine sensor e r rors. Malfunction Caused  Faulty connector connecti on.  Faulty sensor.  Fau[...]

50 15.4.15 H97 (Outdoor Fan Motor – DC Motor Mechanism Locked) Malfunction Decision Conditions  The rotation speed detected by the Hall IC during fan motor operati on is used to determine abnormal fan motor. Malfunction Caused  Operation stops due to short circuit insid e the fan motor winding.  Operation stops due to breaking of wire i [...]

51 15.4.16 H98 (Indoor High Pressure Pr otection) Error Code will not display (no Time r LED blinking) but store in EEPROM Malfunction Decision Conditions  During heating operation, the temperature dete cted by the indoor pipe temperature sensor i s above 140°F. Malfunction Caused  Clogged air filter of the indoor unit  Dust accumulation [...]

52 15.4.17 H99 (Indoor Freeze Prevention Pr otection: Cooling or Soft Dry) Malfunction Decision Conditions  Freeze prevention control take s place (when in door pipe temperature is lo wer than 35.6°F) Malfunction Caused  Clogged air filter of the indoor unit  Dust accumulation on the indoor unit he at exchanger  Air short circu it  [...]

53 15.4.18 F11 (Indoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions  When cooling operation, when ind oor pipe temperature or indoor heat excha nger temperature sensor is ab ove 113°F. Malfunction Caused  Faulty connector connecti on.  Faulty indoor pipe temperature sensor.  Faulty indoor main PCB. Troubleshooti[...]

54 15.4.19 F17 (Indoor Standby Un its Freezing Abnormality) Malfunction Decision Conditions  When the different between indoor intake air tempe r ature and indoor pipe tem perature is above 50°F or indoor pipe temperature is below 30.2°F Remark: When the indoor standby unit is free zing, the outdoor unit transfers F17 error code to the corresp[...]

55 15.4.20 F90 (Pow er Factor Correction Protection) Malfunction Decision Conditions  During startup and operati on of cooling and heating, when Power Factor Correction (P FC) protection circuitry at the outdoor unit main PCB senses abnormal high DC voltage level. Malfunction Caused  DC voltage peak due to power supply surge.  DC voltage p[...]

56 15.4.21 F91 (Refrigeration Cycle Ab normality) Malfunction Decision Conditions  During cooling, compresso r frequency = Fcmax.  During cooling and heating operatio n, running current: 0.65A < I < 1.65A.  During cooling, indoor intake - indoo r pipe < 39.2°F. Malfunction Caused  Refrigerant shortage (refrigerant leakage) [...]

57 15.4.22 F93 (Compressor Rotation Failure) Malfunction Decision Conditions A compressor rotation failure is detected by checkin g the compressor running condition thro ugh the position detection circuit. Malfunction Caused  Compressor termin al disconnect  Outdoor PCB malfunction Troubleshooting[...]

58 15.4.23 F95 (Cooling High Pressure Ab normality) Malfunction Decision Conditions During operation of cooli ng, when outdoor unit heat exchanger high temperature data (141.8°F) is detecte d by the outdoor pipe temperature sensor. Malfunction Caused  Outdoor pipe temperature rise due to sh ort circuit of hot discharge air flow.  Outdoor pip[...]

59 15.4.24 F96 (IPM Overheating) Malfunction Decision Conditions During operating of cooli n g and heating, when IPM temper ature da ta (212°F) is detected by the IPM temperature sensor . Malfunction Caused  IPM overheats due to short circuit of hot discharge ai r flow.  IPM overheats due to defective of outdoor fan motor.  IPM overheats [...]

60 15.4.25 F97 (Compressor Overheating) Malfunction Decision Conditions During operation of cooli n g and heating, when com pressor tank temperature data (233.6°F) i s detected by the compressor tank temperature sen s or. Malfunction Caused  Refrigerant shortage (refrigerant leakag e).  2/3 way valve closed.  Detection error due to faulty[...]

61 15.4.26 F98 (Input Over Current Detection) Malfunction Decision Conditions During cooling and heating operatio n, when an input over-curr ent (16.8A) is detected by checking the input current value being detected by current tran sformer (CT) with the compressor running. Malfunction Caused  Over-current due to compressor failure.  Over-curr[...]

62 15.4.27 F99 (Output Over Current Detection) Malfunction Decision Conditions During operation of cooli n g and heating, when an outp ut over-cur rent (18.5A) is detected by checking the current that flows in the inverter DC peak sensing circuitry. Malfunction Caused  DC peak due to compre ssor failure.  DC peak due to defective powe r trans[...]

63 WA RNIN G 16. Disassembly and Assembly Instructions High Voltage is generated in the electrical parts area by the capacitor. Ensure that t he capac itor has discharged sufficiently before proceeding with repair work. Failure to heed this cauti on may result in electric shocks. 16.1 Indoor Electronic Controllers, Cro ss Flow Fan and Indoor Fan Mo[...]

64 16.1.1.2 To remove discharge grille[...]

65 16.1.1.3 To remove control board 16.1.1.4 To remove cross flow fan and indoor fan motor[...]

66[...]

67 17. Exploded V iew and Replacement Parts List 17.1 Indoor Unit Note The above exploded view is for the purp os e of parts disassembly and repl acement. The non-numbered pa rts are not kept as standard service parts.[...]

68 SAFETY REF. NO. PART NAME & DESCRIPTION QTY. CS-ME7QKUA REMARK 1 CHASSIS COMPLETE 1 CWD50C1633 2 FAN MOTOR 1 L6CBYYY L0055 O 3 CROSS-FLOW FAN COMPLE TE 1 CWH02C1076 4 BEARING ASSY 1 CWH64K007 5 SCREW - CROSS-FL OW FAN 1 CWH551146 7 EVAPORATOR 1 CWB30C3504 8 FLARE NUT (LIQUID) 1 CWT251030 9 FLARE NUT (GAS) 1 CWT251031 12 CONTROL BOARD CASING [...]