Panasonic WH-ADC0309H3E Service Manual page 141

4 Air Purge Valve
Air purge valve must be installed at all high points in a closed water circuit system.
An automatic air purge valve is provided inside the indoor unit. To automatically purge the air from the
system, turn the plug on the air outlet anticlockwise by one complete turn from fully closed position.
Excessive air is automatically purged if the plug is kept in this position.
5 Indoor Unit Control Board Area
Thorough visual inspection of the control board and look for defects, i.e. loose connection, melting of wire
insulator and etc.
6 RCCB/ELCB
Ensure the RCCB/ELCB set to "ON" condition before check RCCB/ELCB.
Turn on the power supply to the indoor unit.
This testing could only be done when power is supplied to the indoor unit.
Be careful not to touch parts other than RCCB/ELCB test button when the power is supplied to Indoor Unit. Else, electrical shock
may happen.
Push the "TEST" button on the RCCB/ELCB. The lever would turn down and indicate "0" and indicate
o
green colour if it functions normal.
Contact authorized dealer if the RCCB/ELCB malfunction.
o
Turn off the power supply to the indoor unit.
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If RCCB/ELCB functions normal, set the lever to "ON" again after testing finish.
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7 Reset Overload Protector
Overload Protector serves the safety purpose to prevent the water over heating. When the Overload
Protector trip at high water temperature, take below steps to reset it.
a. Take out the cover.
b. Use a test pen to push the centre button gently in order to reset the Overload Protector.
c. Fix the cover to the original fixing condition.
8 Maintenance for Water Filter Set
Clean the external water filter in regularly basic.
a. Turn OFF power supply.
b. Set the two valves for the Water Filter Set to "CLOSE".
c. Take off the clip, then gently pull out the mesh. Beware of small amount water drain out from it.
d. Clean the mesh with warm water to remove all the stain. Use soft brush if necessary.
e. Reinstall the mesh to the Water Filter Set and set back the clip on it.
f. Set the two valves for the Water Filter Set to "OPEN".
g. Turn ON power supply.
Plug (turn
anticlockwise by
one complete turn)
Air purge valve c
WARNING
Filter
141
Use test pen to push
this button for reset
Overload protector a.
1. Set 2 valve for the
Water Filter Set to
"CLOSE".
Retaining ring
2. Remove the retaining ring
then remove the Water Filter.