User manual PANASONIC CS-C7JKD SERVICE MANUAL

[. . . ] Order No: PHAAM0810022C8 Indoor Unit CS-C7JKD CS-C9JKD CS-C12JKD Outdoor Unit CU-C7JKD CU-C9JKD CU-C12JKD WARNING This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair the products dealt with in this service information by anyone else could result in serious injury or death. TABLE OF CONTENTS 1. [. . . ] Soft Dry operation is applied to dehumidify and to perform a gentle cooling to the room. This operation starts when the intake air temperature sensor reaches -1. 5°C from the setting temperature on the remote control. When operation begins, Soft Dry will be switched ON for a maximum 10 minutes, then Soft Dry operation will be turned OFF for a minimum 6 minutes. After that, the Soft Dry operation will be ON and OFF based on the setting temperature as shown in figure below. However after 3 minutes of compressor off, during Soft Dry OFF (within 6 minutes Soft Dry restart control), the indoor unit will start to operate at normal Cooling mode if the intake temperature is higher than Cooling ON point. Intake air temperature Cooling Cooling ON point Cooling OFF, Soft Dry ON point Dry Soft Dry OFF point Soft Dry OFF 1. 5 C 1. 0 C Soft Dry ON point Compressor OFF Compressor ON 12. 2. 1 1. 5°C Soft Dry Operation Time Diagram a b c d e f g h i j k l m n o p q r s t u v w x y z Cooling ON Set Temp. Cooling OFF Intake Air Temperature 1. 0°C Dry OFF, ON Indoor Heat Exchanger Temperature 10°C 2°C 10' Time Frame Compressor Indoor Fan Outdoor Fan Operation LED <Description of operation> g ­ h, l ­ m, o ­ p a­c c­e e ­ g, i ­ k, m ­ o, v ­ x t­x * Lo- Lo- 6' 1' 6' 1' 6' 1' 4' 6' * * Lo- * * Lo- Lo- Lo- Lo- * Lo- : Minimum 60 seconds forced operation : Minimum 3 minutes restart control (Time Delay Safety Control) ­ Cooling operation : 10 minutes dry operation : Minimum 6 minutes restart control (Time Delay Safety Control) ­ Soft dry operation : Freeze Prevention Control : Indoor fan OFF for 40" and then rotates at Lo- Operation Stop 29 12. 3 Automatic Operation x x x Automatic operation can be set using remote control. This operation starts to operate with indoor fan at SLo speed for 20 seconds to judge the intake air temperature. After judged the temperature, the operation mode is determined by referring to the below standard. Intake Air Temperature Cooling Operation 23°C Soft Dry Operation x Then, the unit starts to operate at determined operation mode, until it is switched off using remote control, with the setting temperature as shown in table below. Cooling Operation Soft Dry Operation Setting Temperature (Standard) 25°C 22°C x The setting temperature for all the operations can be changed one level up or one level down from the standard temperature as shown in table below by pressing the temperature up or temperature down button at remote control. Higher Standard Lower Æ Æ Æ +2°C ±0°C -2°C Cooling 27°C 25°C 23°C Soft Dry 24°C 22°C 20°C x The operation mode judging temperature and standard setting temperature can be increased by 2°C permanently, by open the circuit of JX03 at indoor unit's printed circuit board. Setting Temperature (Standard) Intake Air Temperature Cooling Operation 25°C Soft Dry Operation Soft Dry Operation 24°C Cooling Operation 27°C 30 12. 4 Indoor Fan Speed Control x Indoor fan speed can be set using remote control 12. 4. 1 Fan Speed Rotation Chart Speed SHi Hi Me HLo CLo LoSLo QHi QMe QLo CS-C7JKD 1050 960 840 820 740 700 680 890 770 690 Fan Speed (rpm) CS-C9JKD 1170 1150 930 820 740 700 680 1080 860 690 CS-C12JKD 1150 1080 940 840 800 760 740 1010 870 730 12. 4. 2 x Automatic Fan Speed Control When set to Auto Fan Speed, the fan speed is adjusted between maximum and minimum setting as shown in the table. o Fan speed rotates in the range of Hi and Me. o Deodorizing Control will be activated. SHi Normal Cooling Manual Auto Quiet Manual QHi QMe QLo Hi-70 Me-70 CLo-70 Hi-70 Me-70 Hi Me Lo Hi Me HLo CLo LoSLo Stop Auto Manual Powerful Auto Manual Normal Auto Manual Quiet Auto Powerful Manual Auto Mode Judgment x Auto Fan Speed during cooling operation: 1 Indoor fan will rotate alternately between off and on as shown in below diagram. 2 At the beginning of each compressor starts operation, indoor fan speed increases gradually for deodorizing purpose. 3 For the first time the compressor operates, indoor fan will be switched to Hi fan speed from Lo- after 70 seconds from the start of compressor. This cause the room temperature to achieve the setting temperature quickly. 4 During compressor stops, indoor fan will operate at Lo- for the beginning 20 seconds to prevent higher volume of refrigerant in liquid form returning to the compressor. 5 After the compressor turned off for 3 minutes, indoor fan will start to operate at Lo- to circulate the air in the room. This is to obtain the actual reading of the intake air temperature. 6 For the resume of compressor operation, indoor fan will operate at Me fan speed to provide comfort and lesser noise environment, after 70 seconds from the restarts of compressor. Soft Dry 31 *1 Indoor Fan Stop 40" 30" 20" LoLoVariable RPM 160" LoStop 40" 30" Lo- *2 Compressor *1 *2 ON OFF ON Fan Speed is Hi until the compressor stops (when the room temperature reaches setting temperature). Fan Speed is Me after the compressor restarts. x Auto Fan Speed during Soft Dry operation: 1 Indoor fan will rotate alternately between off and Lo-. 2 At the beginning of each compressor starts operation, indoor fan will increase fan speed gradually for deodorizing purpose. 3 When compressor turned off for 6 minutes, indoor fan will start at Lo- to circulate the air in the room. This is to obtain the actual reading of intake air temperature. LoIndoor Fan Stop 40" Stop 6' LoStop 40" Lo- Compressor ON OFF ON 12. 4. 3 x x Manual Fan Speed Control Manual fan speed adjustment can be carried out by using the Fan Speed selection button at the remote control. [. . . ] Remove screw to remove terminal board complete. Detach the HV+ (white) and HV(black) terminal wires, CN1 and GND then remove the high voltage generator. 11. Detach 5 connectors as labeled from the electronic controller. CN-Data CN-TH CN-FB 8. CN-STM1 6. [. . . ]