Service Manual
Table Of Contents
- Cover
- Table of contents
- Part 1 List of Functions
- Part 2 Specifications
- Part 3 Printed Circuit Board Connector Wiring Diagram
- Part 4 Refrigerant Circuit
- Part 5 Functions and Control
- Part 6 Test Operation and Field Settings
- Part 7 Remote Controller
- Part 8 Troubleshooting
- 1. Troubleshooting with LED
- 2. Service Diagnosis
- 3. Error Codes and Description
- 4. Troubleshooting for CTXG, CTXS, FTXS, CDXS, FDXS, FVXS Series
- 5. Troubleshooting for FFQ Series
- 6. Troubleshooting for Branch Provider (BP) Unit
- 7. Troubleshooting for Outdoor Unit
- 8. Thermistor Resistance/Temperature Characteristics
- 9. Pressure Sensor
- 10. Method of Replacing Inverter’s Power Transistors Modules
- Part 9 Appendix
SiUS181631EA Test Operation
Test Operation and Field Settings 117
1.1.4 Confirmation on Normal Operation
•
Conduct normal unit operation after the check operation has been completed.
(When outdoor air temperature is 24°CDB (75.2°FDB) or higher, the unit can not be operated
with heating operation. See the installation manual attached.)
•
Confirm that the indoor/outdoor units can be operated normally.
(When an abnormal noise due to liquid compression by the compressor can be heard, stop the
unit immediately, and turn on the crankcase heater to heat up it sufficiently, then start operation
again.)
•
Operate indoor unit one by one to check that the corresponding outdoor unit operates.
•
Confirm that the indoor unit discharges cold air (or warm air).
•
Operate the air direction control button and flow rate control button to check the function of the
devices.
1.2 Operation when Power is Turned On
1.2.1 When Turning On Power First Time
The unit cannot be run for up to 12 minutes to automatically set the master power and address
(indoor-outdoor address, etc.).
Status
1.2.2 When Turning On Power the Second Time and Subsequent
Push the RESET (BS5) button on the outdoor unit PCB. Operation becomes possible for about 2
minutes. If you do not push RESET button, the unit cannot be run for up to 10 minutes to
automatically set master power.
Status
1.2.3 When an Indoor Unit or Outdoor Unit has been Added, or Indoor or
Outdoor Unit PCB has been Changed
Be sure to push and hold RESET button for 5 seconds. If not, the addition cannot be recognized. In
this case, the unit cannot be run for up to 12 minutes to automatically set the address (indoor-
outdoor address, etc.)
Status
Outdoor unit Test lamp H2P .... Blinks
Can also be set during operation described above.
Indoor unit If ON button is pushed during operation described above, the UH malfunction
indicator blinks.
(Returns to normal when automatic setting is complete.)
Outdoor unit Test lamp H2P .... Blinks
Can also be set during operation described above.
Indoor unit If ON button is pushed during operation described above, the operation lamp
lights but the compressor does not operate. (Returns to normal when automatic
setting is complete.)
Outdoor unit Test lamp H2P .... ON
Can also be set during operation described above.
Indoor unit If ON button is pushed during operation described above, the UH or U4
malfunction indicator blinks. (Returns to normal when automatic setting is
complete.)