Operation manual
6
CU-5~10MX1SPP
Urban Multi air conditioner
4PW12337-1
TROUBLESHOOTING
If one of the following malfunctions occur, take the measures shown
below and contact your Panasonic 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 the 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 , the unit number and the operation lamp
flash and the malfunction code appears; (See figure 12)
Measure: Notify your Panasonic dealer and report the
malfunction code.
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.
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 or breaker has worked. Change the
fuse or reset the breaker if necessary.
2 If the system goes into fan only operation, but as soon as it goes
into heating or cooling operation, the system stops;
■ 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 "Maintenance" in the indoor unit
manual.)
3 The system operates but cooling or heating is insufficient;
■ 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 air filter is not clogged. (Refer to"Maintenance" in
the indoor unit manual.)
■ Check the temperature setting.
■ Check the fan speed setting on your remote controller.
■ 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 not proper.
NOTES
1 Inspection display
2 Indoor unit number in which a malfunction occurs
3 operation lamp
4 Malfunction code
1B_OM_4PW12337-1 Page 6 Monday, September 16, 2002 9:25 AM
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