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MAINTENANCE
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In order to ensure safety and optimal performance of the unit,
seasonal inspections on the unit, functional check of RCCB/ELCB,
fi eld wiring and piping have to be carried out at regular intervals. This
maintenance should be carried out by authorized dealer. Contact
dealer for scheduled inspection.
Maintenance for Water Filter Set e
1. Turn OFF power supply.
2. Set the two valves for the Water Filter Set e to "CLOSE".
3. Take off the clip, then gently pull out the mesh. Beware of small
amount water drain out from it.
4. Clean the mesh with warm water to remove all the stain. Use
soft brush if necessary.
5. Reinstall the mesh to the Water Filter Set e and set back the
clip on it.
6. Set the two valves for the Water Filter Set e to "OPEN".
7. Turn ON power supply.
PROPER PUMP DOWN PROCEDURE
Strictly follow the steps below for proper pump down procedure.
Explosion may occur if the steps are not followed as per sequence.
1. When the Indoor Unit is not in operation (standby), enter the
Service setup menu in the Remote Controller and select Pump
down operation to turn it ON. (See APPENDIX for detail)
2. After 10~15 minutes, (after 1 or 2 minutes in case very low
ambient temperatures (< 10°C)), fully close 2 way valve on
Outdoor Unit.
3. After 3 minutes, fully close 3 way valve on Outdoor Unit.
4. Press the "OFF/ON" switch on the Remote Controller 3 to
stop pump down operation.
5. Remove the refrigerant piping.
CHECK ITEMS
Is there any gas leakage at fl are nut connections?
Has the heat insulation been carried out at fl are nut
connection?
Is the connecting cable fi xed to terminal board fi rmly?
Is the connecting cable clamped fi rmly?
Is the earth wire connection properly done?
Is water pressure higher than 0.05 MPa?
Is the pressure relief valve c operation normal?
Is the RCCB/ELCB operation normal?
Is the Indoor Unit properly hooked to the installation plate?
Is the power supply voltage within the rated voltage range?
Is there any abnormal sound?
Is the heating operation normal?
Is the thermostat operation normal?
Is the remote controller 3 LCD operation normal?
Is the Indoor Unit water leak free on test run?
10
WARNING
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