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17
Trial Operation and Testing
Before starting the test run, measure the voltage at the primary side of the safety breaker.
•
Check that the stop valves of all liquid, gas, and water heater pipes 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.
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 1.). Approximately 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.
Wiring error
check switch
(SW3)
Service PC-board
LED
1
2
3
4
Message
Status
All
Flashing
Automatic correction impossible
Flashing
One after another
Automatic correction completed
(One or more of LEDs 1 to 4 are on) Abnormal stop [Note. 3]
Wiring correct example
Terminal block
Wiring error check
From Room B
to the “kitchen”
From Room C
to the “living room”
From Room A
to the “children’s room”
* The figure at left shows branch wiring.
LED lighting sequence after a wiring correction.
Order of LED flashing: 3
2 1
NOTE
If the outside air temperature is
1.
5°C or less
, the wiring error check function will not operate.
After wiring error check operation is completed, LED indication will continue until ordinary operation starts.
2.
This is normal.
Follow the product diagnosis procedures. (Details of product error diagnosis are listed on the back of the
3.
right side plate
.)
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10/30/2014 9:40:16 AM