21 ■English
Trial Operation and Testing
For wireless remote controller
1) Press
MODE
and select the COOL or HEAT operation.
2) Press
/TEST
twice. “Test” is displayed.
3) Press
ON OFF
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
ON OFF
.
• Some of the functions cannot be used in the test operation mode.
Precautions
Refer to “3. How to diagnose for malfunction” (page 23) if the unit does not operate properly.
2. Test items
Test items Symptom Check
Indoor and outdoor units are installed securely. Fall, vibration, noise
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
The power supply voltage corresponds to that shown on the
name plate.
No operation or burn damage
System is properly grounded. Electrical leakage
Only specied wires are used for all wiring, and all wires are
connected correctly.
No operation or burn damage
Indoor or outdoor unit’s air inlet or air outlet are unobstructed. Incomplete cooling/heating function
Refrigerant piping length and additional refrigerant charge are
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
Indoor unit properly receives wireless remote control commands. No operation
The external static pressure is set correctly.
Incomplete cooling/heating function or water
leakage
01_EN_3P674701-1B.indd 21 2022/06/02 10:06:29
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