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English
Trial Operation and Testing
•
Before starting the test run, measure the voltage at the primary side of the circuit breaker.
•
Check that all liquid and gas stop valves are fully open.
•
Check that piping and wiring all match. The wiring error check can be conveniently used for underground wiring and other wiring
that cannot be directly checked.
1.
Wiring error check
This product is capable of automatic correction of wiring error.
Press the wiring error check switch on the outdoor unit service PC-board. However, the
wiring error check switch will not function for 3 minutes after the safety breaker is turned
on, or depending on the outside air conditions (See Note 2.).About 15-20 minutes after
the switch is pressed, the errors in the connection wiring will be corrected.
The service monitor LEDs indicate whether or not correction is possible, as
shown in the table below. For details about how to read the LED display, refer to
the service manual.
If self-correction is not possible, check the indoor unit wiring and piping in the usual
manner.
Service PC-board
A
1
2
3
4
5
Wiring error
check switch
(SW3)
LED
Status
1
2
3
4
All
Flashing
Automatic correction impossible
Automatic correction completed
Abnormal stop [Note. 4]
Message
Flashing
One after another
(One or more of LEDs 1 to 4 are ON)
Terminal block
Wiring error check
LED lighting sequence after a wiring correction.
Order of LED flashing
: 2 1 3 4
From Room C
to the “kitchen”
From Room B
to the “living room”
From Room D
to the “children’s room”
From Room A
to the “bedroom”
Wiring correct example
The figure at left sh
ows branch wiring.
NOTE
1)
For two rooms, LED 3,4 and 5 are not displayed, and for three rooms, LED 4 and 5 is not displayed, and for four rooms,
LED 5 is not displayed.
2)
If the outside air temperature is
41°F (5°C) or less
, the wiring error check function will not operate.
3)
After wiring error check operation is completed, LED indication will continue until ordinary operation starts. This is normal.
4)
Follow the product diagnosis procedures. (Details of product error diagnosis are listed on the back of the
right side plate
.)
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