![background image](http://html1.mh-extra.com/html/daikin/super-multi-nx-g-series/super-multi-nx-g-series_service-manual_4705809102.webp)
Problem Symptoms and Measures
SiUS12-928_A
93
Service Diagnosis
2. Problem Symptoms and Measures
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 outdoor temperature.
Heating operation cannot be used when the
outdoor temperature is 15.5°C (59.9°F) or
higher, and cooling operation cannot be used
when the outdoor temperature is below
–10°C (14°F).
—
Diagnose with outdoor unit LED
indication
—
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 temperature.
Heating operation cannot be used when the
outdoor temperature is 15.5°C (59.9°F) or
higher, and cooling operation cannot be used
when the outdoor temperature is below
–10°C (14°F).
—
Diagnose with outdoor unit LED
indication.
—
Some indoor units do not
operate.
Check the type of the indoor units.
Check to make sure that the indoor unit type is
compatible with the outdoor unit.
—
Diagnose with outdoor unit LED
indication
—
Units operate but do not
cool, or do not heat.
Check for wiring and piping errors in
the connection between the indoor
and outdoor units.
Conduct the wiring/piping error check described
on the product diagnosis nameplate.
—
Check for thermistor detection errors. Check to make sure that the thermistor is
mounted securely.
—
Check for faulty operation of the
electronic expansion valve.
Set all the units to cooling operation, and
compare the temperatures of the liquid pipes to
see the each electronic expansion valve works.
—
Diagnose with outdoor unit LED
indication.
—
Diagnose by service port pressure
and operating current
Check for refrigerant shortage.
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 installation
manual, etc.) are provided.
—
Содержание SUPER MULTI NX G Series
Страница 1: ...SiUS12 928_A Applied Models Inverter Multi Heat Pump G Series J Series...
Страница 7: ...SiUS12 928_A Table of Contents vi...
Страница 10: ...SiUS12 928_A 1 List of Functions Part 1 List of Functions 1 Functions 3...
Страница 11: ...SiUS12 928_A List of Functions 2...
Страница 16: ...SiUS12 928_A 7 Specifications Part 2 Specifications 1 Specifications 9 1 1 Indoor Unit 9 1 2 Outdoor Unit 11...
Страница 17: ...SiUS12 928_A Specifications 8...
Страница 23: ...SiUS12 928_A Specifications Specifications 14...
Страница 25: ...SiUS12 928_A Printed Circuit Board Connector Wiring Diagram 16...
Страница 35: ...SiUS12 928_A Printed Circuit Board Connector Wiring Diagram Printed Circuit Board Connector Wiring Diagram 26...
Страница 37: ...SiUS12 928_A Function and Control 28...
Страница 69: ...SiUS12 928_A Control Specification Function and Control 60...
Страница 71: ...SiUS12 928_A Operation Manual 62...
Страница 73: ...SiUS12 928_A Duct Free System Operation Manual 64 2 Duct Free System 2 1 Remote Controller...
Страница 83: ...SiUS12 928_A Duct Free System Operation Manual 74 2 7 HOME LEAVE Operation is no longer displayed on the LCD...
Страница 84: ...Duct Free System SiUS12 928_A 75 Operation Manual...
Страница 85: ...SiUS12 928_A Duct Free System Operation Manual 76 2 8 TIMER Operation...
Страница 86: ...Duct Free System SiUS12 928_A 77 Operation Manual...
Страница 87: ...SiUS12 928_A Duct Free System Operation Manual 78 2 9 Note for Multi System...
Страница 88: ...Duct Free System SiUS12 928_A 79 Operation Manual...
Страница 97: ...SiUS12 928_A Slim Duct Built In System Operation Manual 88...
Страница 99: ...SiUS12 928_A Service Diagnosis 90...
Страница 169: ...SiUS12 928_A Removal Procedure 160...
Страница 225: ...SiUS12 928_A Trial Operation and Field Settings 216...
Страница 235: ...SiUS12 928_A Appendix 226...
Страница 243: ...SiUS12 928_A Wiring Diagrams Appendix 234...