After-Sales Service And Warranty; 11.1. After-Sales Service - Panasonic U-5MX4XPQ Operation Manual

If the display , the unit number and the operation lamp
TEST
flash and the malfunction code appears. (See figure 6)
1 Inspection display
2 Indoor unit number in which a malfunction occurs
3 Operation lamp
4 Malfunction code
Measure: Notify your 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 "
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 proper.
If after checking all above items, it is impossible to fix the problem
yourself, contact your dealer 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).
11. A -
FTER SALES SERVICE AND WARRANTY
Warranty period
This product includes a warranty card that was filled out by the
dealer at the time of installation. The completed card was
checked by the customer and stored carefully.
If repairs to the air conditioner are necessary within the warranty
period, contact your dealer and keep the warranty card at hand.

11.1. After-sales service

Recommendations for maintenance and inspection
Since dust collects when using the unit for several years,
performance of the unit will deteriorate to some extent.
As taking apart and cleaning interiors of units requires technical
expertise and in order to ensure the best possible maintenance
of your units, we recommend to enter into a maintenance and
inspection contract on top of normal maintenance activities.
U-5~18MX4XPQ + U-4~6ML4DPQ
Urban Multi air conditioner
4PW28162-1
Our network of dealers has access to a permanent stock of
essential components in order to keep your air conditioner in
operation as long as possible.
Contact your dealer for more information.
When asking your dealer for an intervention, always state:
• the complete model name of the air conditioner
• the manufacturing number (stated on the nameplate of the
unit)
• the installation date
• the symptoms or malfunction, and details of the defect.
WARNING
Do not modify, disassemble, remove, reinstall or
repair the unit yourself as incorrect dismantling or
installation may cause an electric shock or fire.
Contact your dealer.
In case of accidental refrigerant leaks, make sure
there are no naked flames. The refrigerant itself is
entirely safe, non-toxic and non-combustible, but it will
generate toxic gas when it accidentally leaks into a
room where combustible air from fan heaters, gas
cookers, etc. ... is present.
Always have qualified service personnel confirm that
the point of leakage has been repaired or corrected
before resuming operation.
Recommended inspection and maintenance cycles
" (time to
Be aware that the mentioned maintenance and replacement cycles
do not relate to the warranty period of the components.
Table 1: "Inspection Cycle" and "Maintenance Cycle" list
Component
Electric motor
PCB
Heat exchanger
Sensor (thermistor, etc.)
Remote controller and switches
Drain pan
Expansion valve
Electromagnetic valve
Table 1 assumes the following conditions of use:
1. Normal use without frequent starting and stopping of the unit.
Depending on the model, we recommend not starting and
stopping the machine more than 6 times/hour.
2. Operation of the unit is assumed to be 10 hours/day and 2,500
hours/year.
NOTE 1.
2.
Inspection cycle
1 year
Table 1 indicates main components.
Refer to your maintenance and inspection contract
for more details.
Table 1 indicates recommended intervals of
maintenance cycles. However, in order to keep the
unit operational as long as possible, maintenance
work may be required sooner.
Recommended intervals can
appropriate maintenance design in terms of
budgetting maintenance and inspection fees.
Depending on the content of the maintenance and
inspection contract, inspection and maintenance
cycles may in reality be shorter than listed.
Maintenance cycle
(replacements and/
or repairs)
20,000 hours
25,000 hours
5 years
5 years
25,000 hours
8 years
20,000 hours
20,000 hours
be used for
Operation manual
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