Installation manual

22 English
PRECAUTIONS
1. Refer to the diagnoses below if the unit does not operate properly.
2. After completing the test run, press the INSPECTION/TEST OPERATION button once to put the unit in
inspection mode, and make sure the malfunction code is “00”. (=normal)
If the code reads anything other than “00”, refer to the malfunction diagnoses below.
NOTE
• If a malfunction is preventing operation, refer to the malfunction diagnoses below.
12-2 Cautions for servicing
With the power on. Troubles can be monitored on the remote controller.
• If the air conditioner does not operate normally after installing the air conditioner.
a malfunction shown in the table below may happened.
*After turning on the power, the maximum is 90 seconds, although it will only display “88”. This is not a
problem, and it will be set for 90 seconds.
■ Trouble shooting with the display on the liquid crystal display remote controller.
1. With the wired remote controller. (Note 1)
When the operation stops due to trouble, operation lamp flashed, and “ ” and the Malfunction code are
indicated on the liquid crystal display. In such a case, diagnose the fault contents by refering to the table
on the Malfunction code list it case of group control, the unit No. is displayed so that the indoor unit no with
the trouble can be recognized. (Note 2)
2. With the wireless remote controller.
(Refer also to the operation manual attached to the wireless remote controller)
When the operation stops due to trouble. the display on the indoor unit flashes. In such a case, diagnose
the fault contents with the table on the Malfunction code list looking for the Malfunction code which can be
found by following procedures. (Note 2)
(1) Press the INSPECTION /TEST OPERATION button, “ ” is displayed and “ 0 ” flashes.
(2) Press the PROGRAMMING TIME button and find the unit No. which stopped due to trouble.
Number of beeps 3 short beeps Perform all the following operations
1 short beep Perform (3) and (6)
1 long beep No trouble
(3) Press the OPERATION MODE SELECTOR button and upper figure of the Malfunction code flashes.
(4)
Continue pressing the PROGRAMMING TIME button unit it makes 2 short beeps and find the upper code.
(5) Press the Operation selector button and lower figure of the Malfunction code flashes.
(6) Continue pressing the PROGRAMMING TIME button unit it makes a long beep and find the lower code.
• A long beep indicate the Malfunction code.
NOTE
1. In case wired remote controller. Press the INSPECTION /TEST OPERATION button on remote controller,
“ ” starts flashing and changes the inspection mode.
2. Keep down the ON/OFF button for 5 seconds or longer in the inspection mode and the above trouble his-
tory disappears, after the trouble code goes on and off twice, followed by the code “00”(normal).
The display changes from the inspection mode to the normal mode.
Remote control display Malfunction
No display
• Power supply trouble or Open phase connection
• Wrong wiring between indoor and outdoor unit
• Indoor PC board faulty
• Wrong remote control conection wiring
• Remote control faulty
• Fuse faulty
88*
• Indoor PC board faulty
• Wrong wiring between indoor and outdoor unit
88 flashing • Wrong wiring between indoor and outdoor unit
01_EN_3P184443-6.fm Page 22 Monday, July 3, 2006 12:04 PM