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ENGLISH
- 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
°C, 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 vavle inspection. (Check the product if abnormal noise
occurs continously)
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 ow 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 cabinet open, it may cause
damage to the product and you may not get the
precise data from S-NET pro.
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