2
2-3
2-2. Precautions
Request that the customer be present when the test run is performed.
At this time, explain the operation manual and have the customer perform the actual steps.
Be sure to pass the manuals and warranty certificate to the customer.
Check that the 230 – 240 VAC power is not connected to the inter-unit control wiring connector terminal.
* If 230 – 240 VAC is accidentally applied, the indoor or outdoor unit control PCB fuse will blow in order to
protect the PCB.
Correct the wiring connections, then disconnect the 2P connectors that are connected to the PCB, and
replace them with 2P connectors.
If operation is still not possible after changing the brown connectors, try cutting the varistor.
(Be sure to turn the power OFF before performing this work.)
Fig. 2-3
Check that the 230 –240 VAC power is not connected to
the inter-unit control wiring connector terminal.
* If 230 –240 VAC is accidentally applied, the indoor unit
control PCB fuse will blow in order to protect the PCB.
In this case, make the wiring correctly.
Then disconnect the 2P connectors (OC) that are
connected to the indoor unit PCB, and replace them
with 2P connectors (EMG).
If operation is still not possible after changing the brown
connectors, cut the jumper on the indoor unit PCB.
(Be sure to turn the power OFF before performing this
work.)
Fig. 2-4
OC (CN040, blue)EMG (CN044, brown)
Jumper
(JP040)
*MODE pin:
factory setting is
cooling operation
mode.
(3-phase model)
CHK pin
RUN pin
MODE pin
OUTDOOR UNIT MAIN PCB (CR)
INDOOR UNIT MAIN PCB (CR)
(1-phase model)
RUN pin
MODE pin
*MODE pin:
factory setting is
cooling
operation mode.
CHK pin
SM830277-00_大洋州向け R32シングル_TD&SM.indb 3 19/02/28 13:25:23
To Next Page
General
