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❇ For more information, see the troubleshooting in the service manual.
• When the auto trial operation for pressure sensor was executed before the pressure of the outdoor unit is
equalized (when there's close to no dierence between high and low pressure), error may occur even though
the product is normal.
• If pressure sensor check is required , error will be displayed on all installed outdoor units.
• If pressure sensor check is required, outdoor units will terminate auto trial operation mode automatically.
• To check for the pressure sensor with the problem, run trial operation for more than 1 hour and analyze the data
to check for a problem.
• To replace a component or inspect the PBA, be sure to cut o the power supply rst. If inspection must be
performed with the power supply on, exercise extra care to prevent electric shock.
CAUTION
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