Unit installation

6
CUSTOMER GUIDANCE
Explain the following to the customer in accordance with the operating
manual:
(1) Starting and stopping method, operation switching, temperature
adjustment, timer, air flow adjustment, and other remote control unit
operations.
(2) Air filter removal and cleaning.
(3) Give the operating manual and installation instruction sheet to the
customer.
5
1. Make a TEST RUN in accordance with the
installation instruction sheet for the indoor unit.
CHECK ITEMS
(1) INDOOR UNIT
(1) Is operation of each button on the remote control unit normal?
(2) Does each lamp light normally?
(3) Do the air flow-direction louver operate normally?
(4) Is the drain normal?
(5) Is there any abnormal noise and vibration during operation?
(2) OUTDOOR UNIT
(1) Is there any abnormal noise and vibration during operation?
(2) Will noise, wind, or drain water from the unit disturb the neighbors?
(3) Is there any gas leakage?
• Do not operate the air conditioner in the test running state for a long
time.
• For the operation method, refer to the operating manual and perform
operation check.
2. OUTDOOR UNIT LEDS
When a malfunction occurs in the outdoor unit, the LED on the circuit
board lights to indicate the error. Refer to the following table for the
description of each error according to the LED.
Error contents
Communication error
(Indoor unit – Outdoor unit)
Discharg pipe temperature sensor
Outdoor heat exchanger temperature sensor
Outdoor temperature sensor
2 way valve sensor
3 way valve sensor
Compressor temperature sensor
Heat sink temperature sensor
Pressure switch A abnormal
Pressure switch B abnormal
Connection indoor unit error
IPM error
Compressor rotor position cannot detect
Compressor cannot operate
Outdoor fan abnormal
Communication error
(inverter - multi controller)
No error
LED
1 flash
2 flash
3 flash
4 flash
5 flash
6 flash
7 flash
8 flash
9 flash
10 flash
11 flash
12 flash
13 flash
14 flash
15 flash
17 flash
lighting
TEST RUNNING
CAUTION
Always turn on the power 12 hours prior to the start of the
operation in order to ensure compressor protection
LED4 LED3 LED2 LED1
Hole
LED is on a reverse
side of the board.