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7-6. Test Run
Performing a test run
Refer to the test run procedures in the indoor unit
installation manual.
Perform the test run.
If the room temperature is 15˚C or below, it may not
be possible to check for tubing errors with cooling
operation. If this occurs, perform heating operation
and check that warm air is discharged from indoor unit.
If there is cold air mixed in with the warm air, check the
tubing connections again.
Checking tubing and wiring
Perform the test run and check that operation is nor-
mal.
CAUTION
Stop operation immediately if there is an error in
tubing or wiring. Turn the power (breaker) to OFF,
and check whether the inter-unit cables are con-
nected incorrectly. Correct the connections.
If there is an error in tubing, pump-down must be
performed. Be sure to perform pump-down. After
making corrections, again purge the air from the
tubes.
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