42
(3)Upward/downward vane
performance failure
1
The vane is not downward during defrosting and
heat preparation and when the thermostat is OFF in
HEAT mode. (Working of COOL protection function)
2
Vane motor does not rotate.
• Defective vane motor
• Breaking of wire or connection failure of connector
• Up/down vane setting is “No vanes”.
3
Upward/downward vane does not work.
• The vane is set to fixed position.
1
Normal operation (The vane is set to hor-
izontal regardless of remote control.)
2
Check
2
(left).
• Check the vane motor. (Refer to “How
to check the parts”.)
• Check for breaking of wire or connec-
tion failure of connector.
• Check “Up/down vane setting”. (Unit
function selection by remote controller).
3
Normal operation (Each connector on
vane motor side is disconnected.)
Phenomena
Cause
Countermeasure
(4)Receiver for wireless remote
controller
1
Weak batteries of wireless remote controller.
2
Contact failure of connector (CNB) on wireless
remote controller board.
(Insert failure)
3
Contact failure of connector (CN90) on indoor con-
troller board.(Insert failure)
4
Contact failure of connector between wireless
remote controller board and indoor controller board.
1
Replace batteries of wireless remote con-
troller.
2
~
4
Check contact failure of each connector.
If no problems are found of connector,
replace indoor controller board.
When the same trouble occurs even if
indoor controller board is replaced,
replace wireless remote controller
board.
8-5. TEST RUN AND EMERGENCY OPERATION
8-5-1. Before test run
4
After completing installation and the wiring and piping of the indoor and outdoor units, check for refrigerant leakage,
looseness in the power supply or control wiring, wrong polarity, and no disconnection of one phase in the supply.
4
Use a 500-volt megohmmeter to check that the resistance between the power supply terminals and ground is at least 1.0M
"
.
4
Do not carry out this test on the control wiring (low voltage circuit) terminals.
Warning:
Do not use the air conditioner if the insulation resistance is less than 1.0M
"
.
Insulation resistance
8-5-2. Test run (Using wired remote controller)
B
E
F
C
H G
I M
A
D
ûC
ûC
SIMPLE
PAR-21MAA
ON/OFF
FILTER
CHECK
OPERATION
CLEAR
TEST
TEMP.
MENU
BACK
DAY
MONITOR/SET
CLOCK
ON/OFF
TEST RUN
COOL, HEAT
A
ON/OFF button
B
Test run display
C
Indoor temperature liquid line
temperature display
D
ON/OFF lamp
E
Power display
F
Error code display
Test run remaining time display
G
Set temperature button
H
Mode selection button
I
Fan speed button
M
TEST button
1
Turn on the power at least 12 hours before the test run.
2
Press the [TEST] button twice.
➜
"TEST RUN" liquid crystal display
3
Press the [Mode selection] button. Make sure that wind is blown out.
4
Press the [Mode selection] button and switch to the cooling (or heating) mode.
➜
Make sure that cold (or warm) wind is blown out.
5
Press the [Fan speed] button.
➜
Make sure that the wind speed is switched.
6
Check operation of the outdoor unit fan.
7
Release test run by pressing the [ON/OFF] button.
➜
Stop
8
Register a telephone number.
The telephone number of the repair shop, sales office, etc., to contact if an error
occurs can be registered in the remote controller. The telephone number will be
displayed when an error occurs. For registration procedures, refer to the operation
manual for the indoor unit.
OC360--2.qxp 06.2.24 1:55 PM Page 42
