33
(3)Upward/downward vane
performance failure
1
Vane motor does not rotate.
• Defective vane motor
• Breaking of wire or connection failure of connector
• Up/down vane setting is “No vanes”.
2
Upward/downward vane does not work.
• The vane is set to fixed position.
1
Check
1
(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).
2
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 wire-
less remote controller board.
7-5. TEST RUN AND EMERGENCY OPERATION
7-5-1. Before test run
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 1 phase in the supply.
Use a 500-volt megohmmeter to check that the resistance between the power supply terminals and ground is at
least 1.0M
"
.
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
"
.
▲▲
▲
7-5-2. Test run (Using wired remote controller)
B
E
F
C
H G
J 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
I
A
ON/OFF button
B
Test run display
C
Liquid pipe(Indoor unit)
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
J
Air direction 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 air is blown out.
4
Press the [Mode selection] button and switch to the cooling mode.
➜
Make sure that cool air is blown out.
5
Press the [Fan speed] button.
➜
Make sure that the fan speed is switched.
6
Press the [Air direction button].
➜
Check operation of the vane.
7
Check operation of the outdoor unit fan.
8
Release test run by pressing the [ON/OFF] button.
➜
Stop
9
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.
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