12
Indoor unit
• Do not splash water directly.
Wipe the unit gently with a soft 
dry cloth.
To ensure optimal performance of the system, cleaning has to be carried out at regular intervals.
Consult an authorised dealer.
• Disconnect the power supply before cleaning.
• Do not use benzine, thinner or scouring powder.
• Use only soap ( 
 pH7) or neutral household detergent.
• Do not use water hotter than 40 °C.
External filter
• Clean the external filter at least once a year. 
Failure to do so may cause the filter to clog up, 
which may lead to system breakdown. Consult 
an authorised dealer.
Outdoor unit
• Do not obstruct the air inlet and outlet vents. 
Failure to do so may result in low performance 
or system breakdown. Remove any obstruction 
to assure the ventilation.
• When it snows, clean and remove snow 
around the outdoor unit to prevent the air inlet 
and outlet vents from being covered with snow.
Inspection
• In order to ensure optimal performance of the units, 
seasonal inspections on the units, external filter and field 
wiring have to be carried out at regular intervals. Consult 
an authorised dealer about maintenance.
• Clear any obstruction on the air inlet and outlet vents of 
the outdoor unit.
For extended non-use
• Disconnect the power supply.
Non serviceable criteria
Disconnect the power supply  
then please consult an authorised dealer under the 
following conditions:
• Abnormal noise during operation.
• Water/foreign particles have entered the control panel.
• Water leaks from the indoor unit.
• Circuit breaker switches off frequently.
• Power cord becomes unnaturally warm.
Cleaning instructions
Weekly timer setting
 ■ Note:
• You may set the timer for each day of the week (Monday to Sunday) with 6 programmes per day.
• When the system is switched on by the timer, it will use the previously set temperature to control the water outlet 
temperature.
• The same timer programme cannot be set on the same day.
• You may also select 2 or more days with the same timer setting.
How to use
Water pressure gauge
• Do not press or hit the glass cover using hard 
and sharp objects. Failure to do so may cause 
damage to the unit.
• Ensure that the water pressure is between 0.05 
and 0.3 MPa (0.1 MPa = 1 bar).
• In case the water pressure is out of the above 
range, consult an authorised dealer.