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English
CAUTION
•
Refer to “Items to be checked at time of delivery to customer.” (page 5) upon completion of the test oper-
ation and make sure that all the items are checked.
•
If the customer’s interior work is not finished on completion of the test operation, tell the customer not to
operate the air conditioner.
Substances generated from paints and adhesives used for the interior work may contaminate the product
if the unit is operated.
When delivering the product to the customer after the test operation is completed, check that the control
box lid, the air filter and the suction grille are mounted. In addition, explain to the customer regarding the
state (ON/OFF) of the power supply breaker.
U4
UF
Transmission error (between indoor
and outdoor units)
Wiring error between indoor and outdoor unit.
Or Indoor and outdoor printed circuit board
failure.
U5
Transmission error (between indoor
and remote controller units)
Transmission between indoor unit and remote
controller is not performed properly.
U8
Transmission error between main and
sub remote controllers (sub remote
controller malfunction)
UA
Field setting error
System setting error of the simultaneous on/
off multi-split type.
UE
Transmission error (between indoor
unit and centralized remote controller)
UC
Remote controller address setting error
UJ
Accessory equipment transmission
error
Abnormal stop is applied depending on the
model or condition.
To test operation Contractors
3PEN486970-1D.book Page 32 Monday, July 24, 2017 8:54 AM