Tuesday, January 15, 2013

PANASONIC - CS-A12CTP CU-A12CTP5 CS-A18CTP CU-A18CTP5 CS-A24CTP CU-A24CTP5 _ ROOM AIR CONDITIONER _ SERVICE HELP




REMOTE CONTROL RESET


  • When the batteries are inserted for the first time, or the batteries are replaced, all the indications will blink and the remote control might not work.
  • If this happen, you will find a resetting terminal, and by shorting it with a minus screwdriver, it will return to normal.
Changing the wireless remote control transmission code
  • When two indoor units are installed in the same room, in order to prevent operating errors caused by using two remote controls, cut a jumper wire at the remote control printed circuit board (A - B) and cut a jumper wire at the indoor printed circuit board (JX4). It is possible to select from 4 types of transmission codes including one at time of delivery condition (0).
Click on image.  Right click on the enlarged image, save image as, to a folder.   View it in ‘Picasa’ picture viewer.  There you can enlarge it more.  Download ‘Picasa-3’ by Google site, and install it to your system.  It’s free software from Google and download it by Google. [Search for ‘Picasa’ by Google]


TROUBLESHOOTING GUIDE
  • 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 fan.  The normal outlet air temperature and pressure of the refrigeration cycle depends on various conditions, the standard values for them are shown in the table.


DIAGNOSIS METHOD OF A MALFUNCTION OF A COMPRESSOR AND FOUR WAY VALVE

Nature of fault
Symptom

Insufficient compressing of a compressor
[1] Electric current during operation becomes approximately 20% lower than the normal value.
Insufficient compressing of a compressor
[2] The discharge tube of the compressor becomes abnormally hot (normally 70 to 90°C).
[3]  The difference between high pressure and low pressure becomes almost zero.
Locked compressor
[1] Electric current reaches a high level abnormally, and the value exceeds the limit of an ammeter. In some cases, a breaker turns off.
Locked compressor
[2] The compressor is a humming sound.
Insufficient switches of the 4-way valve
[1] Electric current during operation becomes approximately 80% lower than the normal value.
[2] The temperature different between from the discharge tube to the 4-way valve and from suction tube to the 4-way valve becomes almost zero.
THERMOSTAT CHARACTERISTICS GRAPH REPRESENTATION 


EXPLODED VIEW [CS-A12CTP _ CS-A18CTP _ CS-A24CTP]


EXPLODED VIEW [CU-A12CTP5]


EXPLODED VIEW [CU-A18CTP5 _ CU-A24CTP5]


ATTACHED ACCESSORIES


INDOOR/OUTDOOR UNIT INSTALLATION DIAGRAM


INDOOR UNIT
  • There should not be any heat source or steam near the unit.
  • There should not be any obstacles blocking the air circulation.
  • A place where air circulation in the room is good.
  • A place where drainage can be easily done.
  • A place where noise prevention is taken into consideration.
  • Do not install the unit near the door way.
  • Ensure the spaces indicated by arrows from the wall, ceiling, fence or other obstacles
OUTDOOR UNIT
  1. If an awning is built over the unit to prevent direct sunlight or rain, be careful that heat radiation from the condenser is not obstructed.
  2. There should not be any animal or plant which could be affected by hot air discharged.
  3. Keep the spaces indicated by arrows from wall, ceiling, fence or other obstacles.
  4. Do not place any obstacles which may cause a short  circuit of the discharged air.
  5. If piping length is over the rated length, additional refrigerant should be added as shown in the table.