19
English
11. WIRING DIAGRAM
(Refer to Fig. 22, 23)
LC
Transmission malfunction between the outdoor control units’ inverters (outdoor unit)
P1
Open-phase (outdoor unit)
P3
PC board temperature sensor malfunction (outdoor unit)
P4
Heat-radiating fin temperature sensor malfunction (outdoor unit)
PJ
Type set improper (outdoor unit)
Capacity data is wrongly proset. Or there is nothing programmed in the data hold IC.
U0
Suction pipe temperature abnormal
U1
Reverse phase
Reverse two of the L1,L2 and L3 leads.
U2
Power source voltage malfunction (outdoor unit)
Includes the defect in K1M.
U4
UF
Transmission error (indoor unit – outdoor unit)
Wrong wiring between indoor and outdoor units or malfunction of the PC board mounted
on the indoor and the outdoor units.
If UF is shown, the wiring between the indoor and outdoor units is not properly wired.
Therefore, immediately disconnect the power supply and correct the wiring. (The com-
pressor and the fan mounted on the outdoor unit may start operation independent of the
remote controller operation.)
U5
Transmission error (indoor unit – remote controller)
Transmission is improper between the indoor unit and the remote controller.
U8
Malfunction in transmission between main and sub remote controls.
(Malfunction in sub remote control.)
UA
Miss setting for multi system
Setting is wrong for selector switch of multi-system. (see switch SS2 on the main unit’s
PC board)
UC
Central control address overlapping
1
TO OUTDOOR UNIT
2
NOTE) 4
3
WIRED REMOTE CONTROLLER
4
SWITCH BOX
5
RECEIVER/DISPLAY UNIT
6
IN CASE OF SIMULTANEOUS
OPERATION SYSTEM
7
INDOOR UNIT (MASTER)
8
INDOOR UNIT (SLAVE)
9
NOTE) 8
10
CONTROL BOX
11
REMOTE CONTROLLER
01_EN_3P184443-2.fm Page 19 Monday, July 3, 2006 3:14 PM