Daikin Super Multi NX FFQ25B8V1B Service Manual page 454

Wiring Error Check Function
Basic Knowledge
Checking the Those data can be checked by looking at the service monitor LED indicators, when the wiring
current setting error checking is over, during forced operation, at the stop of the system.
The LED indicators stop blinking when the forced operation is over.
data on the
LED1...Room A wiring, LED2...Room B wiring
microcomputer
1st blinking LED...Port A piping, 2nd blinking LED...Port B piping
memory
The 1st blinking LED means the room that is connected with Port A. The 2nd blinking LED
means the one connected with Port B.
Example Ex.) Suppose the LED indicators are blinking as follows.
The above means that Port A is connected with Port B, and Port B with Room A (or self-
corrected this way.)
442
Refrigerant flows from Port A and on. The temperatures of the indoor heat exchanger
thermistors are detected one by one to check up the matching between the piping and
wiring.
With this function on, freezing (crackling) noise may be heard from the indoor unit. This is
not a problem. (This is because the heat exchanger temperature is made to drop below 0°C
in order to increase the detection accuracy.)
The indoor fan is made to turn on and off at the same time.
L
A 1 2 3 4
E
D Green Red
L
A 1 2 3 4
E
D
Green Red
A
Wiring
B
A
Piping
B
L
A 1 2 3 4
E
D Green Red
(R8252)
Wiring
Piping
(R8253)
Trial Operation and Field Settings
SiBE121021_C