52_ completing the installation and commissioning
completing the installation and
commissioning
FINAL CHECKS AND TRIAL OPERATION
Trial operation
1. Run the unit by KEY MODE or controller.
• 1
st
- Operate all indoor units by KEY MODE located outdoor PCB.
2
nd
- Operate each indoor unit run separately by controller.
• Inspect the compressor sound during the initial operation.
If roaring sound is heard, stop operation.
• If roaring sound is heard and the pressure does not change, the back-lashing of the
compressor may occur.
Check the power supply of the compressor. If the problem occurs continuously, check
the compressor power cable.
3 phase: T1(Red), T2(White), T3(Black)
2. Check the indoor and outdoor units’ running status.
• Check indoor unit cooling and heating air flow
• Each indoor unit controls: air flow direction, air velocity
• Indoor and outdoor unit’s abnormal running noise
• Proper drainage from indoor unit in cooling mode
• Check detail running status using S-NET program.
3. If error occurs during trial operation, check the error code of the unit and follow the
instruction.
4. Explain to the customer how to use the air conditioner according to the user’s manual.
5. Give the installation manual to the user.
Make sure top and bottom cabinets of the outdoor unit are closed before operating.
The unit may not work properly and fail to get S-NET data if the cabinets are open.
CAUTION
DVM PLUS3_IM_E_31180-1.indd 52 2009-10-16 ｿﾀﾈﾄ 2:10:42
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