Panasonic CU-E9NKUA - Manuals
Panasonic CU-E9NKUA – Manual in PDF format online.
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Manual Panasonic CU-E9NKUA
Summary
3 CAUTION WARNING WARNING 1. Safety Precautions Read the following “SAFETY PRECAUTIONS” carefully before perform any servicing. Electrical work must be installed or serviced by a licensed electrician. Be sure to use the correct rating of the power plug and main circuit for the model installed. ...
9 4. Location of Controls and Components 4.1 Indoor Unit 4.2 Outdoor Unit 4.3 Remote Control
18 10. Printed Circuit Board 10.1 Indoor Unit 10.1.1 Main Printed Circuit Board
21 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 obstacles blocking the air circulation. A...
23 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 piping and bottom piping also.)
24 11.2.4 Connect the Cable to the Indoor Unit 1. The inside and outside connection cable can be connected without removing the front grille. 2. Unscrew the conduit cover and fix the conduit connector to conduit cover with lock nut, then secure it against chassis. 3. Connection cable between indoor ...
25 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...
26 11.3 Outdoor Unit 11.3.1 Install the Outdoor Unit After selecting the best location, start installation according to indoor/outdoor unit installation diagram. 1 Fix the unit on concrete or rigid frame firmly and horizontally by bolt nut (ø13/32"). 2 When installing at roof, please consider ...
27 11.3.2.3 Connecting the piping to outdoor multi Decide piping length and then cut by using pipe cutter. Remove burrs from cut edge. Make flare after inserting the flare nut (locate at valve) onto the copper pipe. Align center of piping to valve and then tighten with torque wrench to the specified...
28 8. Mount valve caps onto the 2-way valve and the 3-way valve. o Be sure to check for gas leakage. 11.3.3.1 Connect the Cable to the Outdoor Unit 1. Remove Top panel. 2. Remove Control Board Cover (Resin and Metal). 3. Remove Plugs. 4. Fix the conduit connectors to the knockout holes with lock-nut...
29 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 for maximum comfort always. In order to achieve the suitable operation mode, the microcomputer maintai...
30 12.1.4.2 Automatic Operation This mode can be set using remote control and the operation is decided by remote control setting temperature, remote control operation mode, indoor intake air temperature and outdoor air temperature. During operation mode judgment, indoor fan motor (with speed of ...
31 [Heating] o According to indoor pipe temperature, automatic heating fan speed is determined as follows. Feedback control o Immediately after the fan motor started, feedback control is performed once every second. o During fan motor on, if fan motor feedback ≥ 2550 rpm or < 50 rpm continue fo...
33 Control contents o Fan speed auto Indoor FM RPM depends on pipe temperature sensor of indoor heat exchanger. Auto fan speed is changed from normal setting to quiet setting of respective fan speed. This is to reduce sound of Hi, Me, Lo for 3dB. o Fan speed manual Manual fan speed for quiet o...
35 13. Operation Control (For Multi Split Connection) During multi split connection, indoor unit’s operation controls are same with single split connection unless specified in this chapter. 13.1 Cooling operation 13.1.1 Thermostat control Capability supply to indoor unit is OFF (Expansion valve cl...
36 13.4 Automatic Operation This mode can be set using remote control and the operation is decided by remote control setting temperature, remote control operation mode, indoor intake and outdoor air temperature. During operation mode judgment, indoor fan motor (with speed of -Lo) and outdoor fan...
37 14. Protection Control 14.1 Protection Control For All Operations 14.1.1 Restart Control (Time Delay Safety Control) The compressor will not turn on within 3 minutes from the moment operation stops, although the unit is turned on again by pressing OFF/ON button at remote control within this per...
38 14.1.5 Compressor Overheating Prevention Control Instructed frequency for compressor operation will be regulated by compressor discharge temperature. The changes of frequency are as below. If compressor discharge temperature exceeds 224.6°F, compressor will be stopped, occurs 4 times per 20 m...
41 15. Servicing Mode 15.1 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 with limited function if remote control is misplaced or malfunction. 2 TEST RUN OPERATION...
43 16. Troubleshooting Guide 16.1 Refrigeration Cycle System In order to diagnose malfunctions, make sure that there are no electrical problems before inspecting the refrigeration cycle. Such problems include insufficient insulation, problem with the power source, malfunction of a compressor and a f...
44 16.1.1 Relationship between the condition of the air conditioner and pressure and electric current Carry out the measurements of pressure, electric current, and temperature fifteen minutes after an operation is started.
45 16.2 Breakdown Self Diagnosis Function 16.2.1 Self Diagnosis Function (Three Digits Alphanumeric Code) Once error occurred during operation, the unit will stop its operation, and Timer LED blinks. Although Timer LED goes off when power supply is turned off, if the unit is operated under a bre...
48 16.4 Self-diagnosis Method 16.4.1 H11 (Indoor/Outdoor Abnormal Communication) Malfunction Decision Conditions During startup and operation of cooling and heating, the data received from outdoor unit in indoor unit signal transmission is checked whether it is normal. Malfunction Caused Faulty ...
50 16.4.3 H14 (Indoor Intake Air Temperature Sensor Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the indoor intake air temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector con...
51 16.4.4 H15 (Compressor Temperature Sensor Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor compressor temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connectio...
52 16.4.5 H16 (Outdoor Current Transformer Open Circuit) Malfunction Decision Conditions A current transformer (CT) is detected by checking the compressor running frequency ( ≥ rated frequency) and CT detected input current (less than 0.65A) for continuously 20 seconds. Malfunction Caused CT def...
53 16.4.6 H19 (Indoor Fan Motor – DC Motor Mechanism Locked) Malfunction Decision Conditions The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor (feedback of rotation > 2550rpm or < 50rpm) Malfunction Caused Operation stops due to s...
54 16.4.7 H23 (Indoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the indoor heat exchanger temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector conne...
55 16.4.8 H27 (Outdoor Air Temperature Sensor Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor air temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. F...
56 16.4.9 H28 (Outdoor Pipe Temperature Sensor Abnormality) Malfunction Decision Conditions During startup and operation of cooling and heating, the temperatures detected by the outdoor pipe temperature sensor are used to determine sensor errors. Malfunction Caused Faulty connector connection. ...
64 16.4.17 H99 (Indoor Freeze Prevention Protection: Cooling or Soft Dry) Malfunction Decision Conditions Freeze prevention control takes place (when indoor pipe temperature is lower than 35.6°F) Malfunction Caused Clogged air filter of the indoor unit Dust accumulation on the indoor unit heat...
75 WARNING 17. Disassembly and Assembly Instructions High Voltage is generated in the electrical parts area by the capacitor. Ensure that the capacitor has discharged sufficiently before proceeding with repair work. Failure to heed this caution may result in electric shocks. 17.1 Indoor Electronic C...
79 18. Technical Data 18.1 Operation Characteristics 18.1.1 CS-E9NK CU-E9NK Cooling Characteristic o Room temperature: 81°F (DBT), 66°F (WBT) o Operation condition: High fan speed o Piping length: 24.6ft o Compressor Frequency : Fc 55.000 56.000 57.000 58.000 59.000 60.000 61.000 5 10 15 20 25 30 ...
87 19. Exploded View and Replacement Parts List 19.1 Indoor Unit Note The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.
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