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8.2. Test run
8.2.1. Using wired remote controller (Fig. 8-1)
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 opera-
tion manual for the indoor unit.
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 dis-
play
G
Set temperature button
H
Mode selection button
I
Fan speed button
M
TEST button
8. Test run
Fig. 8-1
Fig. 8-2
8.3. Self-check (Fig. 8-2)
1
Turn on the power.
2
Press the [CHECK] button twice.
3
Set refrigerant address with [TEMP.] button if system control is used.
4
Press the [ON/OFF] button to stop the self-check.
A
CHECK button
B
Refrigerant address
C
TEMP. button
D
IC: Indoor unit
OC: Outdoor unit
E
Check code
F
Unit address
Errors detected by indoor unit
Check code
Symptom
Remark
P1
Intake sensor error
P2, P9
Pipe sensor error
P3
Indoor/Remote controller unit communication error
P4
Drain sensor error
P5
Drain pump error
P6
Freezing/Overheating protection operation
P8
Pipe temperature error
– –
No corresponding
E0, E3
Wired remote controller transmission error
E4, E5
Wired remote controller signal receiving error
E1, E2
Wired remote control board error
• If the unit cannot be operated properly after the above test run has been performed, refer to the following table to remove the cause.
Symptom
Cause
Wired remote controller
PLEASE WAIT
For about 2 minutes after power-
on
• For about 2 minutes after power-on, operation of the remote controller is not possible
due to system start-up. (Correct operation)
PLEASE WAIT → Error code
After about 2 minutes has expired
after power-on
• Reverse or open phase wiring for the outdoor unit’s power terminal block
• Incorrect wiring between indoor and outdoor units (incorrect polarity of 1, 2, 3)
Display messages do not appear even
when operation switch is turned ON
(operation lamp does not light up).
• Remote controller wire short
• Wiring between indoor and outdoor units short
Note:
Operation is not possible for about 30 seconds after cancellation of function selection. (Correct operation)
For description of each LED (LED1, 2) provided on the indoor controller, refer to the following table.
LED 1 (power for microcomputer)
Indicates whether control power is supplied. Make sure that this LED is always lit.
LED 2 (power for wired remote controller)
Indicates whether power is supplied to the wired remote controller. This LED lights only in the
case of the main indoor unit.
8.1. Before test run
After completing installation and the wiring and piping of the indoor and out-
door units, check for refrigerant leakage, looseness in the power supply or con-
trol wiring, wrong polarity, and no disconnection of one phase in the supply.
Use a 500-volt megohmmeter to check that the resistance between the
power supply terminals and ground is at least 1.0 M
.
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 1.0 M
.
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2006/12/20 9:32:03