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E-9
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Periodical Checks
Type Description Monthly Every 4 months Once a year
Indoor unit
Clean the air filter
(1)
Clean the condensate drain pan (2)
Thoroughly clean the heat exchanger (2)
Clean the condensate drain pipe (2)
Replace the remote control batteries
Outdoor unit
Clean the heat exchanger on the outside
of the unit (2)
Clean the heat exchanger on the inside
of the unit (2)
Clean the electric components with jets
of air (2)
Verify that all the electric components
are firmly tightened (2)
Clean the fan (2)
Verify that all the fan assembly is firmly
tightened (2)
Clean the condensate drain pan (2)
The checks and maintenance operations described are essential to guarantee the efficiency of the air conditioner.
The frequency of these operations varies according to the characteristics of the area, the amount of dust, etc.
(1) The described operations should be performed more frequently if the area of installation is very dusty.
(2) These operations must always be performed by qualified personnel. For more detailed information, see the
Installation Manual.
Protections enabled by the Unit control system
Type of protection Description Operation When it enables
Protection against cold air The internal fan is off
Heating on
heat pump
During operation
Defrost cycle The internal fan is off
Heating on
heat pump
During operation
Anti-frost protection
of internal battery
The compressor is off
Cooling During
operation
Delayed start of compressor
The start of the
compressor is delayed.
Cooling or Heating
on heat pump
At start-up or during
the selection
of the operating mode
CAUTION If the air conditioner is operating in heat pump mode, it performs several defrost cycles in order
to remove the frost that may have deposited on the outdoor unit (at low temperatures).
In this case, the internal fan is switched off automatically and restarted only after the defrost
cycle is completed.
Cassette Type_E_26442.indd 9 2007-12-07 ｿﾀﾈﾄ 6:19:05