Filter
Top Products
– 109 –
(a) Outline of Judgment
A primary judgment to detect cause of error exists on the indoor unit or outdoor unit is performed in the
following procedure.
<Judgment by flashing display on the indoor unit display part>
The indoor unit monitors operating status of the air conditioner, and if a protective circuit works, contents of
the self-diagnosis are displayed with a block restricted to the following cases on the indoor unit display part.
(b) Self-diagnosis by check code on the remote controller
Refer to “Judgment of error mode by check code on the remote controller”.
<Wireless remote controller type>
1. Before troubleshooting
1) Required tools/instruments
• + and – screwdrivers, spanners, radio cutting pliers, nippers, etc.
• Tester, thermometer, pressure gauge, etc.
2) Confirmation points before check
The following operations are normal.
a) Compressor does not operate.
• Is not 3-minutes delay (3 minutes after compressor OFF)?
• Does not thermostat turn off?
• Does not timer operate during fan operation?
• Is not outside high-temperature operation controlled in heating operation?
b) Indoor fan does not rotate.
• Does not cool air discharge preventive control work in heating operation?
c) Outdoor fan does not rotate or air volume changes.
• Does not high-temperature release operation control work in heating operation?
• Does not outside low-temperature operation control work in cooling operation?
• Is not defrost operation performed?
d) ON/OFF operation cannot be performed from remote controller.
• Is not forced operation performed?
• Is not the control operation performed from outside/remote side?
Did you return the cabling to the initial positions?
Are connecting cables between indoor unit and receiving unit correct?
Remote
controller code
—
00
01
02
03
—
Block display
Operation lamp display flashes. (1Hz)
Operation lamp display flashes. (5Hz)
Operation/timer lamp displays flash. (5Hz)
Operation/defrost lamp displays flash. (5Hz)
Operation/timer/defrost lamp displays flash. (5Hz)
——
Contents of self-diagnosis
Power failure (In power ON)
Indoor P.C. board
Inter-unit cables/transmission system
Outdoor P.C. board
Cycle system, etc.
——
Check code
——
0b to 0F, 11, 12, b5, b6
04
14 to 19, 1A, 1C
1d, 1E, 1F, 21
1b, 8b