301
Test Run
6. Test Run
Turn OFF all the power supply switches.
Use a tester and make sure that all the switches are turned OFF.
Before test run, check that the unit is appropriately installed according to Installation & Maintenance Manual.
After that, inspect the following items.
Check Item Contents
1 Damage Are the unit appearance and inside of the unit damaged?
2 Fan Motor
Is the fan motor runner mounted in the center of the casing? Is the fan motor mounted away from
the casing?
(The fan motor should NOT be touched with the casing.)
3 Screw Part
Are the screws loosened due to the vibration during transportation?
Check that the screw part is xed rmly when installing, especially for the screw of electrical wiring.
4 Refrigerant Leakage
Check that there is NO refrigerant leakage.
The tightening part of pipe (ared part) may be loosened due to the vibration during transportation.
5 DSW Setting Check the DSW setting is the same as before shipping.
6 Insulation*
Measure resistance between electrical component terminal and ground with a tester. It is normal if
the resistance is 1MΩ and over.
If 1MΩ or less, do not perform the operation due to insulation failure of electrical charge part. Do
NOT apply electricity to the terminal block of operating line. (Control PCB may be damaged.)
7
Stop Valve Fully
Opening
Prior to test run, check that the stop valve of the outdoor unit is completely open.
8 Power Supply Phase
The operation is NOT available with the incorrect power phase order or lacking phase.
• Alarm “05” will be indicated on the LCD of remote control switch.
• “05” will be indicated on the 7-segment of outdoor unit.
Check the power supply phase according to the caution label attached close to the outdoor unit
terminal block or rear side of the service cover.
9
Turn ON Crankcase
Heater *
After completion of the check item 1 to 8, turn ON the power supply of the outdoor unit. The
electricity is supplied for the crankcase heater to warm the compressor. The compressor may be
damaged without preheating. Therefore, the compressor should be activated after the power supply
is turned ON for at least 12 hours.
10
Indoor and Outdoor
Temperature
<For Use in both Cooling and Heating Operation>
Is indoor temperature DB80°F(27oC) or less during heating operation?
(Heating operation may not be operated due to the activation of the overload operation prevention
under the ambient temperature of 66°F(19oC) or over.) To perform the test run, set the test run
mode by the remote control switch.
<* Insulation Resistance>
In case that the unit has been turned OFF for long periods, insulation resistance may decreases to 1MW or
less because the refrigerant is retained in the compressor. Check the following points.
a . Disconnect the cables of the compressor and measure the insulation resistance of the compressor itself. If the
resistance is 1MW and over, insulation failure of other electrical charge part has occurred.
b . If the resistance is 1MW or less, reconnect the compressor and turn ON the main power supply. The compressor will be
warmed up automatically. Check the insulation resistance again after applying current for at least 3 hours. (Preheating
time depends on the air condition, piping length or refrigerant condition.)
Before the leakage breaker is activated, check the rated capacity.
<* Stoppage of Compressor Operation>
The compressor may NOT be available for the max. 4 hours if the power supply is NOT turned ON in advance. At this time,
the stoppage Code (d1-22) is displayed on the LCD of remote control switch and the forced Thermo-OFF function is started.
If operating compressor is necessary, turn ON the power supply of outdoor unit, wait for 30 seconds and press PSW5 on
the outdoor PCB1 for at least 3 seconds. The forced Thermo-OFF function (d1-22) will be canceled and the compressor
operation will be available.
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