Installation Instructions
English 12
Trial Operation and Testing
1. Trial operation and testing.
1-1 Measure the supply voltage and make sure that it falls in the specified range.
1-2 Trial operation should be carried out in either cooling or heating mode.
• In cooling mode, select the lowest programmable temperature; in heating mode, select the highest programmable
temperature.
1) Trial operation may be disabled in either mode depending on the room temperature.
Use the remote controller for trial operation as described below.
2) After trial operation is complete, set the temperature to a normal level (26°C to 28°C in cooling mode, 20°C to 24°C
in heating mode).
3) For protection, the system disables restart operation for 3 minutes after it is turned off.
1-3 Carry out the test operation in accordance with the Operation Manual to ensure that all functions and parts,
such as louver movement, are working properly.
• The air conditioner requires a small amount of power in its standby mode. If the system is not to be used for some
time after installation, shut off the circuit breaker to eliminate unnecessary power consumption.
• If the circuit breaker trips to shut off the power to the air conditioner, the system will restore the original operation
mode when the circuit breaker is opened again.
2. Test items.
Trial operation from remote controller
1) Press ON/OFF button to turn on the system.
2) Simultaneously press centre of TEMP button and MODE button.
3) Press MODE button twice.
(“ ” will appear on the display to indicate that Trial Operation mode is selected.)
4) Trial run mode terminates in approx. 30 minutes and switches into normal mode. To quit a trial operation, press
ON/OFF button.
Test items
Symptom
(diagnostic display on RC)
Check
Indoor and outdoor units are installed properly on solid bases. 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
System is properly earthed. Electrical leakage
The specified wires are used for interconnecting wire connections. Inoperative or burn damage
Indoor or outdoor unit’s air intake or exhaust has clear path of air.
Stop valves are opened.
Incomplete cooling/heating function
Indoor unit properly receives remote controller commands. Inoperative