Troubleshooting; Maintenance - Daikin FFQ25B7V1B Operation Manual

T
ROUBLESHOOTING
If one of the following malfunctions occurs, take the measures shown
below and contact your Daikin dealer.
The system must be repaired by a qualified service person.
If a safety device such as a fuse, a breaker, or an earth leakage
breaker frequently actuates, or ON/OFF switch does not
properly work.
Measure: Turn off the main power switch.
If water leaks from unit.
Measure: Stop the operation.
If the display " " (INSPECTION), "UNIT No.", and the
OPERATION lamp flashes and the "MALFUNCTION CODE"
appears.
Measure: Notify your Daikin dealer and inform him/her of the
display.
If the system does not operate properly, except for the above
mentioned case, and none of the above mentioned malfunctions are
evident, investigate the system according to the following
procedures.
If the system does not operate at all.
Check if there is a power failure.
Wait until power is restored. If power failure occurs during
operation, the system automatically restarts immediately after
the power supply recovers.
Check if the fuse has blown or breaker has been tripped.
Change the fuse or set the breaker.
If the system stops operating after operation is complete.
Check if the air inlet or outlet of outdoor or indoor unit is blocked
by obstacles.
Remove the obstacle and make it well-ventilated.
Check if the air filter is clogged.
Ask a qualified service person to clean the air filter.
The system operates but it does not sufficiently cool or heat.
If the air inlet or outlet of the indoor or the outdoor unit is blocked
with obstacles.
Remove the obstacle and make it well-ventilated.
If the air filter is clogged.
Ask a qualified service person to clean the air filter.
If the set temperature is not proper. (Refer to the manual of the
remote controller)
If the FAN SPEED CONTROL button is set to LOW SPEED.
(Refer to the manual of the remote controller)
If the air flow angle is not proper. (Refer to the manual of the
remote controller)
If the doors or the windows are open. Shut doors or windows to
prevent wind from coming in.
If direct sunlight enters the room (when cooling).
Use curtains or blinds.
When there are too many inhabitants in the room. Cooling effect
decreases if heat gain of the room is too large.
If the heat source of the room is excessive (when cooling).
Cooling effect decreases if heat gain of the room is too large.
Operation manual
4
M
AINTENANCE
IMPORTANT
ONLY A QUALIFIED SERVICE PERSON IS ALLOWED TO
PERFORM MAINTENANCE.
BEFORE OBTAINING ACCESS TO TERMINAL DEVICES, ALL
POWER SUPPLY CIRCUITS MUST BE INTERRUPTED.
DO NOT USE WATER OR AIR OF 50°C OR HIGHER FOR
CLEANING AIR FILTERS AND OUTSIDE PANELS.
WHEN CLEANING THE HEAT EXCHANGER, BE SURE TO
REMOVE THE SWITCHBOX, FAN MOTOR AND DRAIN PUMP.
WATER OR DETERGENT
INSULATION OF ELECTRIC COMPONENTS AND RESULT IN
BURN-OUT OF THESE COMPONENTS.
See figure 2
1 Indoor unit
2 Discharged air
3 Inlet air
4 Remote controller
5 Connection electric wire
6 Refrigerant piping
7 Drain pipe
8 Outdoor unit
9 Ground wire
Wire to ground outdoor unit to prevent electrical shocks.
How to clean the air filter
Clean the air filter when the display shows "
CLEAN AIR FILTER).
Increase the frequency of cleaning if the unit is installed in a room
where the air is extremely contaminated.
(As a yardstick for yourself, consider cleaning the filter once a half
year.)
If dirt becomes impossible to clean, change the air filter. (Air filter for
exchange is optional.)
1. Open the suction grill
Push both knobs simultaneously and carefully lower the grille.
(Identical procedure for closing.)
2. Remove the air filters
Pull the hook of the air filter out diagonally downward and remove the
filter. (See figure 4)
3. Clean the air filter
Use a vacuum cleaner or wash the air filter with water.
When the air filter is very dirty, use a soft brush and neutral
detergent.
Remove water and dry in the shade.
4. Fix the air filter
Attach the air filter to the suction grill by hanging it to the projected
portion above the suction grill.
Press the bottom of the air filter against the projections on the bottom
of the grille to snap the air filter into its place.
5. Shut the air inlet grill
Refer to item No. 1.
6. After turning power on, press the FILTER SIGN RESET button
The "TIME TO CLEAN AIR FILTER" display disappears.
(For details, refer to the operation manual of the outdoor unit.)
NOTE Do not remove the air filter except when cleaning.
Unnecessary handling may damage the filter.
MAY DETERIORATE THE
" (TIME TO
(See figure 3)
(See figure 5)
FFQ25~60B7V1B
Split system air conditioners
4PW18600-1