Trouble Shooting - Daikin RQYQ140PY1 Operation Manual

9-12 THE DISPLAY SHOWS
• This is the case immediately after the main
power supply switch is turned on.
This means that the remote controller is in normal
condition. This continues for one minute.
9-13 THE COMPRESSOR OR FAN IN THE
OUTDOOR UNIT DOES NOT STOP
• This is to prevent oil and refrigerant from
remaining in the compressor. The unit will
stop after 5 to 10 minutes.
9-14 THE INSIDE OF AN OUTDOOR UNIT IS
WARM EVEN WHEN THE UNIT HAS
STOPPED
• This is because the crankcase heater is warm-
ing the compressor so that the compressor
can start smoothly.
9-15 IT STOPS SOMETIMES
• The remote controller display reads "U4" and
"U5" and stops but then restarts after a few
minutes.
This is because the remote control is intercepting
noise from electrical appliances other than the air
conditioner, and this prevents communication
between the units, causing them to stop.
Operation automatically restarts when the noise
goes away.
9-16 HOT AIR IS EMITTED EVEN THOUGH
THE UNIT IS STOPPED
• Hot air can be felt when the unit is stopped.
Several different indoor units are being run on the
same system, so if another unit is running, some
refrigerant will still flow through the unit.
9-17 DOES NOT COOL VERY WELL
• Program dry operation.
Program dry operation is designed to lower the
room temperature as little as possible.
Refer to page 7.

10. TROUBLE SHOOTING

If one of the following malfunctions occur, take
the measures shown below and contact your
Daikin dealer.
WARNING
Stop operation and shut off the power if any-
thing unusual occurs (burning smells, etc.)
Leaving the unit running under such circumstances
may cause breakage, electrical shock, or fire.
Contact your dealer.
English
" "
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 follow-
ing procedures.
If it is impossible to fix the problem yourself
after checking all the above items, contact your
dealer.
Let him know the symptoms, system name, and
model name (listed on the warranty card).
• If a safety device such as a fuse, a breaker or an
earth leakage breaker frequently actuates;
Measure : Do not turn on the main power switch.
• If the ON/OFF switch does not properly work;
Measure: Turn off the main power switch.
• If water leaks from unit;
Measure: Stop the operation.
• The operation switch does not work well.
Turn off the power.
• If the display "
TEST
operation lamp flash and the malfunction code
appears; (Refer to figure 12)
1. Inspection display
2. Indoor unit number in which a malfunction
occurs
3. Operation lamp
4. Malfunction code
Measure: Notify your Daikin dealer and report the
malfunction code.
1. If the system does not operate at all;
• Check if there is no power failure.
Wait 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;
Turn off the power supply
• Check if the breaker is
blown.
Turn the power on with
the breaker switch in the
off position.
Do not turn the power on
with the breaker switch in
the trip position.
(Contact your dealer.)
2. If the system stops soon after starting the opera-
tion;
• Check if air inlet or outlet of outdoor or indoor unit
is not blocked by obstacles.
Remove any obstacle and make it well-ventilated.
• Check if the remote controller display shows
" " (time to clean the air filter);
Refer to the operation manual of the indoor unit.
And clean the air filter.
", the unit number and the
ON
Switch
Trip position
Breaker
OFF
13