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Performing final checks and trial operation
CAUTION
Precautions before test operation
• When the outdoor temperature is low, turn on the main power
6 hours before beginning the operation.
– If you start the operation immediately after turning on the
main power, it may cause serious damage to the part in the
product.
• Do not touch the refrigerant pipe during or right after the
operation.
– Refrigerant pipe may be hot or cold during or right after the
operation depending on the status of the refrigerant which
flows through the refrigerant pipe, compressor and other
parts of the refrigerant cycle.
• Do not operate the product with its panel or protection nets off.
– There is risk of personal injury from the parts rotating,
heated or with the high voltage.
• Do not turn off the main power immediately after stopping the
operation.
– Wait for at least 5 minutes before turning off the main
power. If not, water leakage or other problems may occur.
• Connect all the indoor units and the power supply for the
outdoor unit and run auto address setting. Run auto address
setting even after changing the indoor unit PCB.
Checklist before auto trial operation
1 Check the power cable and communication cable of the indoor
and outdoor unit.
2 Supply power to the outdoor unit 6 hours before trial operation
to pre-heat the compressor.
3 Before supplying the power, use a voltmeter and phase tester
to check the voltage and the phase.
– R,S,T terminal: check the 460V between wires (R-S, S-T, T-R)
(AM****XV*J* Model only) / 230V between wires (R-S, S-T,
T-R) (AM****XV*F* Model only).
4 When the power is supplied, outdoor unit will execute tracking to
check the indoor unit connection and other optional functions.
5 Write down the installation report on the service history report
paper attached on the front part of the control box.
CAUTION
• Supply power to the outdoor unit 6 hours before auto trial
operation to pre-heat the compressor.
6 Guaranteed range of auto trial operation
For precise judgment, you must perform auto trial operation in
below indoor/outdoor temperature condition.
50 (122)
40 (104)
30 (86)
20 (68)
10 (50)
0 (32)
-10 (14)
-20 (-4)
5 (41) 10 (50) 15 (59) 20 (68) 25 (77) 30 (86) 35 (95) 40 (104) 45 (113)
Indoor temperature (℃ (℉))
54
English
DB68-11976A-00_IM_DVM S2 Outdoor_SA_EN_.indd 54
DB68-11976A-00_IM_DVM S2 Outdoor_SA_EN_.indd 54
– In Auto trial operation, product will automatically select either
cooling or heating mode and operate in selected mode.
– In the temperature range marked with slashed pattern, system
protection control may trigger during operation.(If the system
protection control is enabled, it can be hard to get the precise
judgment after the auto trial operation.)
– When the temperature is outside of guaranteed range,
accuracy of judgment on auto trial operation may decrease
near boarder line area.
– If all indoor units are connected with only hydro unit, it is
operated by heating mode. If outdoor temperature is above
35℃ (95℉), auto trial operation is skipped and UP mode will
be cleared.
Auto trial operation
1 If the Auto Trial Operation is not completed, normal operation
will be prohibited.
– When the auto trial operation is not completed, UP
(UnPrepared) will appear on the segment after the
communication check and restrict compressor from
operating. (UP Mode will be cleared automatically when
auto trial mode is completed.)
– Auto trial operation may take 20 minutes to maximum 2
hours depending on the operation status.
– During auto trial operation, noise can be generated due
to valve inspection. (Check the product if abnormal noise
occurs continuously)
2 When error occurs during auto trial operation, check the error
code and take appropriate measures.
– Refer to next couple of pages when E503, E505 or E506
error occurs.
3 When auto trial operation ends, use S-NET pro or S-CHECKER
to issue a result report.
– Refer to service manual if you have any items with "NG" on
the result report.
– After taking appropriate measure for the items with "NG",
run the auto trial operation again.
4 Check the following items by running trial operation (cooling/heating).
– Check if cooling/heating operation performs normally.
– Individual indoor unit control: Check for air flow direction
and fan speed.
– Check for abnormal operation noise from the indoor and
outdoor unit.
– Check for proper draining from the indoor unit during
cooling operation.
– Use S-NET pro to check the detail operation status.
5 Explain to the user how to use the air conditioner according to
the user's manual.
6 Hand over the installation manual to the customer so they can
keep it with them.
CAUTION
• Make sure to close the top and bottom part of the outdoor unit
cabinet during operation. If you operate the unit with the front
Cooling
cabinet open, it may cause damage to the product and you may
Heating
not get the precise data from S-NET pro.
2022-09-13 오전 9:34:27
2022-09-13 오전 9:34:27
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