FVXS Installation Manual

17 ■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 specied 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 following the instructions in the operation manual to
ensure that all functions and parts, such as the movement of the ap, are working
properly.
• To protect the air conditioner, restart operation is disabled for 3 minutes after the system has been turned off.
•
When connecting to a multi outdoor unit, if trial operation is conducted in HEAT operation directly after the circuit
breaker is turned on, in some cases no air will be output for about 3 to 20 minutes in order to protect the air conditioner.
1-4. After trial operation is complete, set the temperature to a normal level (78°F to 82°F
(26°C to 28°C) in COOL operation, 68°F to 75°F (20°C to 24°C) in HEAT operation).
• When operating the air conditioner in COOL operation in winter, or HEAT operation in summer, set it to the trial operation
mode using the following method.
1) Press
to turn on the system.
2) Press
, and at the same time.
3) Press
, then select “ ”, and press for conrmation.
• 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 grounded. Electrical leakage
The specied wires are used for inter-unit wiring connections. No operation 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
will be displayed when the MODE button is pressed.*
No heating
*Check that the jumper (J8) has not been cut. If it has been cut, contact
your dealer.
Jumper (J8)
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