Checking Procedure - Hitachi PC-P5H Installation And Operation Manual

CAUTION:
- Use the twist (shield) pair cable (2x0.75mm²) as transmitting wire cable for prevention of the
malfunction (The total cable length is max. 200m).
When the total cable length is within 30m, other type cable (more than 0.3mm²)
can be used.
- Keep a distance more than 30cm between the remote control cable and the transmission
wire of Indoor units.
CAUTION:
- In the case that multiple indoor units are controlled simultaneously, set the refrigerant
cycle number and the address of Indoor units as indicated below.
Address of Indoor Units:
st nd
Main unit 1 unit 2
th th th
4 unit 5 unit 6
4.

CHECKING PROCEDURE

1. Turn ON the power supply for all the indoor
units.
2. Set the "TEST RUN" mode by the outdoor
unit
ATTENTION:
PC-P5H does not have Test Run mode.
The test running shall be operated by
the outdoor unit.
NOTE:
- The completion of the automatic address
setting requires 3 to 5 minutes after
turning ON the power supply.
- The total number of the connected units
is indicated on the liquid crystal display.
unit
- In case that the indicated number is
not correct, some abnormalities exist,
incorrect wiring, the electric noise, etc.
CHECKING PROCEDURE
rd
unit 3 unit 8
th
unit 7 unit 12
3. Canceling "Test Run" Mode
Example when
5 indoor Units
are connected.
th th th
unit 9 unit 10 unit
th th th
unit 13 unit 14 unit
- Turn OFF the power supply and correct
the wiring after checking the following
points; (Do not repeat turning ON and
OFF within 10 seconds.)
- Power Supply for Indoor Unit is Not
Turned ON or Incorrect Wiring.
- Incorrect Connection of Connecting
Cable between Indoor Units or Incorrect
Connection of Controller Cable
- Incorrect Setting of Rotary Switch
(The setting is overlapped.) on the Indoor
Units PCB
- Test Run mode will be finished
automatically after 2 hours.
- Cancel the Test Run made by the outdoor
unit or by pressing the Run/Stop switch
of the PC-P5H.
CAUTION:
The operation mode at the Test Run is
memorized in the PC-P5H. After Test
Run, set the operation mode by referring
to "5.0 Mode Setting" Otherwise, the
operation may be set with the same mode
as the Test Run mode.
5
th
11 unit
th
15 unit