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English 16
3. Filter sign settings
• The remote controller is provided with an LCD that tells
the time of air filter cleaning.
• If the air conditioner is used in places with excessive dust,
change the “SECOND CODE NO.” as shown in Table 4.
The “SECOND CODE NO.” is set to 01 (standard) at fac-
tory set.
Table 4
* Select “No display” under conditions in which the cleaning
display is not required, such as the time of regular mainte-
nance.
12. TEST OPERATION
• The operation lamp of the remote controller will flash when a
malfunction occurs. Check the malfunction code on the dis-
play to identify the point of trouble. An explanation of mal-
function codes and the corresponding trouble is provided in
“Service precautions” of the outdoor unit.
If the display shows any of the following, there is a possibility
that the wiring was done incorrectly or that the power is not
on, so check again.
Table 5
CAUTION
• After the test operation is completed, check the items men-
tioned in 2. BEFORE INSTALLATION (2) Items to be
checked at time of delivery on page 4.
If the interior finish work is not completed when the test oper-
ation is finished, for protection of the air conditioner, ask the
customer not to operate the air conditioner until the interior
finish work is completed.
If the air conditioner is operated, the inside of the indoor unit
may be polluted by substances generated from the coating
and adhesives used for the interior finish work and cause
water splash and leakage.
To the operator carrying out test operation
• After the test operation is completed, before delivering the air
conditioner to the customer, confirm that the control box
cover, the air filter and suction grille are attached.
In addition, explain the power supply status (power supply
ON/OFF) to the customer.
Dirt
Time for
display
Mode No.
FIRST
CODE
NO.
SECOND
CODE
NO.
Standard
Approxi-
mately 2500
hours
20
0
01
Excessive
dust
Approxi-
mately 1250
hours
02
No display (*) 3
Remote controller
display
Contents
“ A8 ”
• Error in power supply voltage to indoor
unit.
“ C1 ”
• Fan driver PCB of indoor unit indoor
control PCB transmission error.
“ C6 ”
• Improper combination of fan driver
PCB of indoor unit or setting failure in
control PCB type.
“ U3 ”
• Test operation of outdoor unit has not
been finished.
“ ”
• There is a short circuit at the FORCED
OFF terminals (T
1, T2)
“ U4 ”
“ UH ”
• The power on the outdoor unit is off.
• The outdoor unit has not been wired
for power supply.
• Incorrect wiring for the transmission
wiring and / or FORCED OFF wiring.
None
• The power on the indoor unit is off.
• The indoor unit has not been wired for
power supply.
• Incorrect wiring for the remote control-
ler wiring, the transmission wiring and /
or the FORCED OFF wiring.
01_EN_3P530815-1.fm Page 16 Tuesday, July 10, 2018 6:20 PM
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