18 Troubleshooting; Symptoms That Are Not Air Conditioner Troubles; Symptom: The System Does Not Operate; Symptom: The Fan Strength Does Not Correspond To The Setting - Daikin FCAHG71FVEB Installer And User Reference Manual

18 Troubleshooting

NOTICE
▪ The table indicates main components. Refer to your
maintenance and inspection contract for more details.
▪ The table indicates
replacement cycles. However, in order to keep the unit
operational as long as possible, maintenance work may
be required sooner. Recommended intervals can be
used for appropriate maintenance design in terms of
budgeting maintenance and inspection fees. Contact
your dealer for details.
INFORMATION
Damage due to taking apart or cleaning interiors of units by
anyone other than our authorised dealers may not be
included in the warranty.
18 Troubleshooting
If one of the following malfunctions occur, 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, electric shock or fire. Contact your dealer.
The system must be repaired by a qualified service person:
Malfunction
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.
If water leaks from the unit.
The operation switch does not work
well.
If the user interface display indicates the
unit number, the operation lamp flashes
and the malfunction code appears.
If the system does not properly operate except for the above
mentioned cases and none of the above mentioned malfunctions is
evident, investigate the system according to the following
procedures.
Malfunction
If the system does not ▪ Check if there is no power failure. Wait
operate at all. until power is restored. If power failure
occurs during operation, the system
automatically restarts immediately after
the power supply is recovered.
▪ Check if no fuse has blown or breaker
has worked. Change the fuse or reset the
breaker if necessary.
Installer and user reference guide
30
recommended intervals of
Measure
Turn off the main power
switch.
Stop the operation.
Turn off the power.
Notify your installer and
report the malfunction
code.
Measure
Malfunction
The system operates ▪ Check if air inlet or outlet of outdoor or
but cooling or heating indoor unit is not blocked by obstacles.
is insufficient. Remove any obstacle and make it well-
ventilated.
▪ Check if the air filter is not clogged (see
"17.1.1 To clean the air filter" on
page 27).
▪ Check the temperature setting.
▪ Check the fan speed setting on your user
interface.
▪ Check for open doors or windows. Shut
doors and windows to prevent wind from
coming in.
▪ Check if there are too many occupants in
the room during cooling operation. Check
if the heat source of the room is
excessive.
▪ Check if direct sunlight enters the room.
Use curtains or blinds.
▪ Check if the air flow angle is proper.
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 air conditioner (with manufacturing number if
possible) and the installation date (possibly listed on the warranty
card).
18.1 Symptoms that are not air
conditioner troubles
Following symptoms are not air conditioner troubles:
18.1.1

Symptom: The system does not operate

▪ The air conditioner does not start immediately after the ON/OFF
button on the user interface is pressed. If the operation lamp
lights, the system is in normal condition. To prevent overloading of
the compressor motor, the air conditioner starts 5 minutes after it
is turned ON again in case it was turned OFF just before. The
same starting delay occurs after the operation mode selector
button was used.
▪ If "Under Centralized Control" is displayed on the user interface,
pressing the operation button causes the display to blink for a few
seconds. The blinking display indicates that the user interface
cannot be used.
▪ The system does not start immediately after the power supply is
turned on. Wait one minute until the micro computer is prepared
for operation.
18.1.2 Symptom: The fan strength does not
correspond to the setting
The fan speed does not change even if the fan speed adjustment
button in pressed. During heating operation, when the room
temperature reaches the set temperature, the outdoor unit goes off
and the indoor unit changes to whisper fan speed. This is to prevent
cold air blowing directly on occupants of the room. The fan speed
will not change if the button is pressed.
18.1.3 Symptom: The fan direction does not
correspond to the setting
The fan direction does not correspond with the user interface
display. The fan direction does not swing. This is because the unit is
being controlled by the micro computer.
Measure
FCAHG71~140FVEB
Split system air conditioners
4P429475-1 – 2015.12