Hitachi RAS-34FSN Installation & Maintenance Manual page 33

Inverter-driven multi-split system heat pump air conditioners
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(1) Turn ON the power source of the indoor and outdoor units.
(2) Set the TEST RUN mode by the remote control switch.
Depress the "MODE" and the "CHECK" switches
simultaneously for more than 3 second.
If "TEST RUN" and the counting number of the
connected units to the remote control switch
(for example "05") are indicated on the remote
control switch, the connection of remote control
cable is correct.
If no indication or "00" appears or the number
of the units indicated is less than the actual
number of the units, some abnormalities exist.
(3)
Remote
Control Switch
Indication
No Indication
* The power source is not turned ON.
* The connection of the remote control
cable is incorrect.
* The connecting wires of power supply
line are incorrect or loosened.
Counting
* The setting of unit number is incorrect.
number of
* The connection of control cables between
connected units
each indoor units are incorrect.
is incorrect.
(When one remote control switch controls
multiple units.)
(4) Select TEST RUN MODE by depressing MODE switch. (COOL or HEAT)
(5) Depress RUN/STOP switch.
The "TEST RUN" operation will be started. (The "TEST RUN" operation will be finished after 2 hours
unit operation or by depressing the RUN/STOP switch again.)
If the units do not start or the operation lamp on the remote control switch is flashed,
some abnormalities exist.
(6)
Remote Control
Switch Indication
The operation lamp
The unit does not
flashes. (1 time/1 sec.)
start.
And the Unit No. and
Alarm Code "03" flash.
The operation lamp
The unit does not
flashes. (1 time/2 sec.)
start.
Indication of flash
The unit does not
different to above.
start, or starts once
and then stops.
The operation lamp
The unit does not
flashes. (1 time/1 sec.)
start.
And the Unit No. 00.
Alarm Code dd and
Unit Code E.00 flash.
Table 7.2 Checking of Wire Connection by Test Run
Fault
Back to (1) after checking
Unit Condition
The connecting wires of operating
line are incorrect or loosened.
The connection of remote control
cable is incorrect.
The connection of the thermistors
or other connectors are incorrect.
Tripping of protector exists, or else.
The connecting wires of operating
line are incorrect or loosened.
Back to (1) after checking
Counting Number of
Connected Units
Operation Lamp
MODE
Inspection Points after the Power Source OFF
1. Connection between Connector and Wires
2. Connecting Points of Remote Control Cable
3. Contact of Connectors of Remote Control Cable
4. Connection Order of each Terminal Boards
5. Screw Fastening of each Terminal Boards
6. Dip Switch Setting on Printed Circuit Board
7. Wire Connecting Order of Bridge Cable
8. Connecting Points of Bridge Cable
9. Contact of Connectors of Bridge Cable
Fault
1. Connecting Order of each Terminal Boards.
The fuse on the PCB may be blown out
due to miswiring. (Can be recovered only
once by the DSW on the PCB)
Procedures for Recovery When Transmitting
Circuit Fuse is Blown Out
1. Correct the wiring for the terminal board.
2. Setting position of the model code are shown below.
Indoor PCB DSW7
RPK-0.8 to 1.5
RPK-2.0
RCI, RCD, RPI, RPC,
RPK-2.5 to 4.0,
RPF(I)
2. Screw Fastening of each Terminal Boards.
3. Connecting Order of Power Line Between
Indoor Units and Outdoor Unit.
This is the same as item (3)-1, 2 and 3.
Check by the alarm code table in the service
manual. (Do it by service people.)
Check by the alarm code table in the service
manual. (Do it by service people.)
HIGH
COOL
A/C
RUN / STOP
MODE FAN SPEED
ON/OFF TIMER
VENTI
LOUVER
TIME
CHECK
Remote Control Switch
Inspection Points after the
Power Source OFF
ON
OFF
Outdoor PCB DSW10
ON
ON
OFF
OFF
1 2
1 2
ON
OFF
1 2
SET TEMP.
UNIT
CHECK
TEMP.
RESET
CHECK
29

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