SiBE01-503
Problem Symptoms and Measures
Service Diagnosis
53
2.
Problem Symptoms and Measures
Problem
Check
Solution
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 outdoor air temperature.
Heating operation cannot be used when the
outdoor air temperature is 20°C or higher, and
cooling operation cannot be used when the
outdoor air temperature is below 15°C (RYN
models) or 10°C (ARY models).
—
Diagnosis with remote controller
indication
—
57
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 outdoor air temperature.
Heating operation cannot be used when the
outdoor air temperature is 20°C or higher, and
cooling operation cannot be used when the
outdoor air temperature is below 15°C (RYN
models) or 10°C (ARY models).
—
Diagnosis with remote controller
indication
—
57
Equipment operates but
does not cool, or does not
heat.
Check for wiring and piping errors in
the indoor and outdoor units
connection wires and pipes.
Conduct the wiring/piping error check described
on the product diagnosis nameplate.
—
Check for thermistor detection errors. Check to make sure that the main unit’s
thermistor has not dismounted from the pipe
holder.
—
Diagnosis with remote controller
indication
—
57
Large operating noise and
vibrations
Check the output voltage of the
power transistor.
—
—
Check the power transistor.
—
—
Check the installation condition.
Check to make sure that the required spaces
for installation (specified in the Technical
Guide, etc.) are provided.
—
Summary of Contents for FTYN25DV3B ATY20DV2
Page 1: ...SiBE01 503 SPLIT Pair D Series Applied Models zNon Inverter Pair Heat Pump...
Page 5: ...SiBE01 503 iv Table of Contents Index i Drawings Flow Charts iii...
Page 10: ...SiBE01 503 List of Function 1 Part 1 List of Function 1 Functions 2...
Page 13: ...Functions SiBE01 503 4 List of Function...
Page 14: ...SiBE01 503 Specifications 5 Part 2 Specifications 1 Specifications 6...
Page 35: ...Control Specification SiBE01 503 26 Functions and Control...
Page 59: ...Instructions SiBE01 503 50 System Configuration...
Page 79: ...Check SiBE01 503 70 Service Diagnosis...
Page 117: ...Others SiBE01 503 108 Others...
