8 Troubleshooting
Operation manual
13
FTXP20~35 ATXP20~35N5V1B9
R32 Split series
3P717028-5D – 2023.08
2
Remove the dust from the filter with a vacuum cleaner.
3
Soak the filter for 10 to 15 minutes in warm water. Do NOT
remove the filter from the frame.
4
After washing, shake off remaining water and dry the filter in the
shade. Do NOT wring out the filter when removing water.
7.6
To replace the titanium apatite
deodorising filter and the silver
particle filter (Ag-ion filter)
INFORMATION
Replace the filter every 3 years.
1
Remove the filter from the tabs of the filter frame and replace
the filter with a new one.
INFORMATION
▪ Do NOT throw away the filter frame, but use it again.
▪ Dispose of the old filter as non-flammable waste.
7.7
To close the front panel
1
Set the filters as they were.
2
Gently press the front panel at both sides and at the center until
it clicks.
7.8
To take following items into
account before a long idle period
1
Set the mode to
fan only
by pressing
button to dry the
inside of the unit.
2
After operation stops, turn the breaker OFF.
3
Clean the air filters and replace them in their original positions.
4
Remove the batteries from the wireless remote control.
INFORMATION
It is recommended to have periodical maintenance
performed by a specialist. For specialist maintenance,
contact your dealer. Maintenance costs shall be borne by
the customer.
In certain operating conditions the inside of the unit may
get dirty after several seasons of use. This results in poor
performance.
8
Troubleshooting
If one of the following malfunctions occurs, take the measures
shown below and contact your dealer.
WARNING
Stop operation and shut OFF the power if anything
unusual occurs (burning smells etc.).
Leaving the unit running under such circumstances may
cause breakage, electrical shock or fire. Contact your
dealer.
The system MUST be repaired by a qualified service person.
Malfunction
Measure
If a safety device such as a fuse, a
breaker or an earth leakage breaker
frequently actuates or the ON/OFF
switch does NOT properly work.
Turn OFF the main power
switch.
If water leaks from the unit.
Stop the operation.
The operation switch does NOT work
well.
Turn OFF the power
supply.
If the user interface display indicates the
unit number, the operation lamp flashes
and the malfunction code appears.
Notify your installer and
report the malfunction
code.
If the system does NOT operate properly except for the above
mentioned cases and none of the above mentioned malfunctions is
evident, investigate the system in accordance with the following
procedures.
INFORMATION
Refer to the reference guide located on
for more troubleshooting tips. Use the
search function to find your model.
If after checking all above items, it is impossible to fix the problem
yourself, contact your installer and state the symptoms, the complete
model name of the unit (with manufacturing number if possible) and
the installation date (possibly listed on the warranty card).
8.1
Symptoms that are NOT system
malfunctions
The following symptoms are NOT system malfunctions:
8.1.1
Symptom: A sound like water flowing is
heard
▪ This sound is caused by the refrigerant flowing in the unit.
▪ This sound may be generated when water is flowing away from
the unit during cooling or drying operation.
8.1.2
Symptom: A blowing sound is heard
This sound is generated when the direction of the refrigerant flow is
changed (e.g. when switching from cooling to heating).
