Installation Instructions

12 English
Trial Operation and Testing
1. Trial operation and testing
• Trial operation should be carried out in either COOL or HEAT operation.
1-1. Measure the supply voltage and make sure that it is within the specified range.
1-2. In COOL operation, select the lowest programmable temperature; in HEAT operation,
select the highest programmable temperature.
1-3. Carry out the trial operation in accordance with the operation manual to ensure that all
functions and parts, such as flap movement, are working properly.
• For protection, the system disables restart operation for 3 minutes after it is turned off.
1-4. After trial operation is complete, set the temperature to a normal level (26°C to 28°C in
COOL
operation, 20°C to 24°C in HEAT operation).
• When operating the air conditioner in COOL operation in winter, set it to the trial operation mode using the following
method.
1) Press , and at the same time.
2) Press , select , press .
3) Press or to turn on the system.
• Trial operation will stop automatically after about 30 minutes.
To stop the operation, press .
• Some of the functions cannot be used in the trial operation mode.
• The air conditioner draws 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
Test items Symptom 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 inter-unit wiring. Inoperative or burn damage
Indoor or outdoor unit’s air inlet or air outlet are unobstructed Incomplete cooling/heating function
Stop valves are opened. Incomplete cooling/heating function
Indoor unit properly receives remote control commands. No operation
3PEN393185-2D.book Page 12 Tuesday, April 7, 2015 8:51 AM