Installation Manual

Manuf
acturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
23
START-UP
TEST OPERATION
Perform a test operation after completing a gas leak and electrical
safety check. Review the indoor unit installation instructions and
owner’s manual for additional start up information.
System Checks
1. Conceal the tubing where possible.
2. Ensure the drain tube slopes downward along its entire length.
3. Ensure all tubing and connections are properly insulated.
4. Fasten the tubes to the outside wall, when possible.
5. Seal the hole through which the cables and tubing pass.
OUTDOOR UNIT
1. Are there unusual noises or vibrations during operation?
Explain the Following Items to the Customer (with the
aid of the Owner’s Manual):
2. Explain care and maintenance.
3. Present the installation instructions to the customer.
OUTDOOR UNIT DIAGNOSTIC GUIDES
For ease of service, the systems are equipped with a diagnostic code
display LED on both the indoor and outdoor units. The outdoor
diagnostic is displayed on the outdoor unit microprocessor board. There
may be a few error codes displayed on the indoor unit that might relate to
the outdoor unit’s problems. If possible, always check the diagnostic
codes displayed on the indoor unit first.
In standby, the LED displays “- -”.
In the compressor operation, the LED displays the running frequency.
In the defrosting mode, the LED displays “dF” or alternative displays
between the running frequency and “dF” (each appears for 0.5s).
During the compressor pre-heating cycle, the LED displays “PH” or
alternative displays between the running frequency and “PH” (each
appears for 0.5s).
During the oil return process, the LED displays “RO” or alternative
displays between the running frequency and “RO” (each appears for
0.5s). In the low ambient cooling mode, the LED displays “LC” or
alternative displays between the running frequency and “LC” (each
appears for 0.5s).
In the forced cooling mode, the LED displays “FC” or alternative
displays between the running frequency and “FC” (each appears for
0.5s). When PFC module protection occurs three times within 15
minutes, the LED displays “E6” or alternative displays between the
running frequency and “E6” (each appears for 0.5s).
In protection or malfunction, the LED displays an error code or a
protection code. The diagnostic codes displayed on the outdoor units are
listed on Table 16.
Table 16 — Outdoor Unit Error Display
DO NOT apply power to the outdoor unit if the Master Service
Valves are not fully open. Compressor damage will occur.
CAUTION
OPERATION LAMP (TIMES) TIMER LAMP DISPLAY LED STATUS
1OFF
EH 00/EH 0A
Indoor unit EEPROM parameter error
2OFFEL 01 Indoor/outdoor unit communication error
3OFFEH 02 Zero-crossing signal detection error
4OFFEH 03 Indoor fan operating outside of the normal range
5OFFEC 51 Outdoor unit EEPROM parameter error
5OFFEC 52 T3 is in open circuit or has short circuited
5OFFEC 53 T4 is in open circuit or has short circuited
5OFFEC 54 TP is in open circuit or has short circuited
5OFFEC 56 T2B is in open circuit or has short circuited
6OFFEH 60 T1 is in open circuit or has short circuited
6OFFEH 61 T2 is in open circuit or has short circuited
12 OFF EC 07 Outdoor fan operating outside of the normal range
9OFFEH 0b Indoor PCB/Display board communication error
8OFFEL 0C Refrigerant leakage detection
7 FLASH PC 00 IPM malfunction or IGBT OSCP
2 FLASH PC 01 Over voltage or over low voltage protection
3 FLASH PC 02 Compressor or IPM high temp/pressure protection
5 FLASH PC 04 Inverter compressor drive error
1 FLASH PC 08 Current overload protection
6 FLASH PC 40 Communication error between outdoor chip and compressor chip
7 FLASH PC 03 Low pressure protection
1ON-- Indoor units mode conflict
9OFFEH b1 Indoor board and Multi-function communication error
11 OFF FH 0d Ionizer malfunction