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9. PRECAUTIONS ON TEST RUN
●
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.
●
Check that the 220 – 240 VAC power is not connected to the inter-unit control wiring
connector terminal.
* If 220 – 240 VAC is accidentally applied, the indoor unit control PCB fuse will blow in order
to protect the PCB. Correct the wiring connections. Then disconnect the 2P connectors
(OC) that are connected to the indoor unit control PCB, and replace them with 2P
connectors (EMG).
If operation is still not possible after changing the brown connectors, cut off the jumper on
the indoor unit control PCB.
(Be sure to turn the power OFF before performing this work.)
OC (CN040, blue)
EMG (CN044, brown)
Jumper (JP040)
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