Troubleshooting by Symptoms Si01-501
98 Service Diagnosis
2. Troubleshooting by Symptoms
Symptom Check Item Details of Measure Reference
Page
None of the units
operates.
Check the power supply. Check to make sure that the rated voltage is
supplied.
—
Check the type of the indoor units. Check to make sure that the indoor unit type is
compatible with the outdoor unit.
—
Check the outside air temperature. Operation cannot be used when the outside
temperature is below 19.4 °C (–5°C for R60DSG).
—
Diagnose with remote controller
indication.
—106
Check the remote controller
addresses.
Check to make sure that address settings for
the remote controller and indoor unit are
correct.
—
Operation sometimes
stops.
Check the power supply. A power failure of 2 to 10 cycles can stop air
conditioner operation. (Operation lamp OFF)
—
Check the outside air temperature. Operation cannot be used when the outside
temperature is below 19.4°C (–5°C for R60DSG).
—
Diagnose with remote controller
indication.
—106
Equipment operates but
does not cool.
Check for thermistor detection
errors.
Check to make sure that the main unit’s
thermistor has not dismounted from the pipe
holder.
—
Diagnose with remote controller
indication.
—106
Diagnose by service port pressure
and operating current.
Check for insufficient gas. —
Large operating noise and
vibrations
Check the installation condition. Check to make sure that the required spaces
for installation (specified in the Engineering
data, etc.) are provided.
—
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