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
Test Operation SiUS181631EA
124 Test Operation and Field Settings
With Wireless Remote Controller Kit (BRC082A41W, BRC082A42W(S))
1. Press button and select the COOL or HEAT operation.
2. Press button twice. “TEST” is displayed.
3. Press button within 10 seconds, and the test operation starts.
Monitor the operation of the indoor unit for a minimum of 10 minutes. During test operation, the
indoor unit will continue to cool/heat regardless of the temperature setpoint and room
temperature.
In the case of above-mentioned procedures (1) and (2) in reverse order, test operation can
start as well.
Test operation will stop automatically after 15 ~ 30 minutes. To stop the operation, press
button.
Some of the functions cannot be used in the test operation mode.
Test Items
Test items Symptom
Indoor and outdoor units are installed securely. Fall, vibration, noise
Is the outdoor unit fully installed? No operation or burn damage
No refrigerant gas leaks. Incomplete cooling/heating function
Refrigerant gas and liquid pipes and indoor drain
hose extension are thermally insulated.
Water leakage
Draining line is properly installed. Water leakage
Does the power supply voltage correspond to that
shown on the name plate?
No operation or burn damage
Only specified wires are used for all wiring, and all
wires are connected correctly.
No operation or burn damage
System is properly grounded. Electrical leakage
Is wiring size according to specifications? No operation or burn damage
Is something blocking the air outlet or inlet of either
the indoor or outdoor units?
Incomplete cooling/heating function
Are refrigerant piping length and additional
refrigerant charge noted down?
The refrigerant charge in the system is not clear
Pipes and wires are connected to the
corresponding connection ports/terminal blocks for
the connected unit.
No cooling/heating
Stop valves are opened. Incomplete cooling/heating function
Check that the connector of the lead wires of the
decoration panel is connected securely.
Louvers do not move
Indoor unit properly receives wireless remote
control commands.
No operation