17.1 BEFORE TEST RUN
Recheck that there is not any problems to the installation, and
do not perform the test run until all the following checking points
have been cleared.
1
Check to ensure that the refrigerant piping and the transition
wiring are connected to the same refrigerant cycle system.
If not, it will cause an abnormal operation and breakage of
instruments.
2
Do not apply the high voltage to the terminals for the
transmission (TB2 [A, B, 1 and 2]).
3
Check to ensure that each wire is correctly connected at
the phase of power source. If incorrectly connected, the unit
will not operate and the remote control switch will indicate
the alarm code “05”. In this case, check the phase of the
primary power source according to the attached attention
label on the rear side of the service cover. Then, perform
the reconnection work correctly with turning OFF the power
supply.
4
For wired remote control switch (PC-ARF(P)(1)(E)), set
the SW2 to “Wired” because the setting before shipment is
“Wireless”. If not, the operation is not available.
?
N O T E
The RUN indicator on indoor unit is turned ON even when the wired
remote control switch is used. However, the indication for timer settings
are only indicated on the wired remote control switch.
5
For the indoor unit wall type without expansion valve, check
that the optional expansion valve kit is installed without fail
before test run.
17.2 START TEST RUN
After the installation work is completed, test run should be
performed.
In the case that indoor units are connected to the VRF system,
perform the test run of the indoor unit one by one sequentially
and then check accordance of the refrigerant piping system
and the electrical wiring system. (If the multiple indoor units are
operated simultaneously, the system can not be inspected the
system accordance.).
For more information, please refer to remote control “Installation
& Operation Manual”.
18 MAINTENANCE
!
D A N G E R
• Turn OFF the power source before the maintenance work. If not,
it may cause a fire or an electric shock.
• Perform the maintenance work with stable footing. If not, it may
cause falling or injury.
!
C A U T I O N
When the flat panel is opened (closed) or the air filter is attached
(removed), perform the work according to this operation manual. If not, it
may cause falling or injury.
?
N O T E
Do not operate the system without the air filter to protect the indoor unit
heat exchanger against being clogged.
18.1 DAILY MAINTENANCE
18.1.1
Cleaning air filter
Clean the air filter when the filter sign is turned ON.
1
Open the flat panel.
Hold the both sides of flat panel and pull up.
(v)
2
Remove the air filter.
Lift up the air filter, detach the catches from the indoor unit
and remove the air filter downward.
(vi)
3
Clean the air filter.
• Vacuum the dust by a cleaner, or wash the air filter by water
or neutral detergent.
• Dry the air filter in the shade
?
N O T E
• Do not use hot water more than 50ºC. The air filter may be deformed
by heat.
• Do not dry the air filter by an open fire, a dryer or a heater. The air
filter may be deformed.
4
Attach the air filter. After the air filter is dried, correctly attach
it with “FRONT” indication frontward to the indoor unit.
5
Close the flat panel pressing 3 parts.
?
N O T E
Be sure to attach the air filter. If the indoor unit is operated without the air
filter, it may cause malfunction of the indoor unit.
6
Reset the filter sign.
PC-AWR
Point the transmitter toward the receiver and press “RESET”
switch. The filter sign of unit is turned OFF and the next filter
cleaning will be accumulated.
PC-ARF(P)(1)(E)
?
N O T E
If the accumulated time of filter cleaning is not got to setting time, the
indication “ ” is turned ON and “Setting disabled” will be displayed.
MAINTENANCE
PMML0552 rev.1 - 02/2021 - A10635790A
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