IVT 09LR-N, Service Manual

Page: 41 / 64

12LRN
3 – 19
Indoor and
outdoor units
do not oper-
ate. 13-time      Timer (Orange) 13 0 DC com-
pressor Compressor
startup error (1) Check the colors
(red, white, orange)
of the compressor
cords for proper con-
nection. (PWB side,
compressor side)
(1) Correct the instal-
lation. (U: Red, V:
White, W: Orange)
   Operation (Red)
Plasmacluster
(Blue)
     Timer (Orange) 1 Compressor
rotation error.
(at 120o energiz-
ing) (2) Check if the IPM ter-
minal resistance val-
ues are uniform.
(2) Replace the out-
door unit control
PWB assembly.
   Operation (Red)

Plasmacluster
(Blue)
     Timer (Orange) 2 Compressor
rotation error
(at 180o energiz-
ing) (3) Check if outdoor
main relay (MRY1)
turns on and voltage
of both end of the
condenser (C10) has
become DC290-
330V.
(3) Replace the out-
door unit control
PWB assembly.
  
Operation (Red)

Plasmacluster
(Blue)
(4) (1) (2) (3) :Normal (4) Replace the com-
pressor.
Indoor and
outdoor units
operate.      Timer (Orange) 3 Detection error of
inverter current. (1) Check the circuit of
detection of inverter
current.
(1) Replace the out-
door unit control
PCB assembly.
   Operation (Red)
 
Plasmacluster
(Blue)
Indoor and
outdoor units
do not oper-
ate. 14-time      Timer (Orange) 14 0 Outdoor unit
PAM PAM over volt-
age error (1) Check the AC power
supply voltage for
fluctuation.
(1) Correct the instal-
lation.
   Operation (Red)
Plasmacluster
(Blue)
(2) No abnormalyity
found in above
inspection.
(2) Replace the PCB
assembly.
    
Timer (Orange) 1 PAM clock error (1) Check the PAM
clock for proper
input.
(1) Replace the out-
door unit control
PCB assembly.
   Operation (Red)

Plasmacluster
(Blue)
     Timer (Orange) 2 PAM under volt-
age error (1) Check the AC power
supply voltage for
fluctuation.
(1) Correct the instal-
lation.
  
Operation (Red)

Plasmacluster
(Blue)
(2) No abnormalyity
found in above
inspection.
(2) Replace the PCB
assembly.
Indoor unit
operates.
Outdoor unit
does not
operate. Lighting
or OFF
     Timer (Orange) 17 0 Wiring
between
units Serial open-cir-
cuit
(1) Check the wires
between units.
(1) Connect stable
power supply.
Correct the wiring.
  Operation (Red)
Plasmacluster
(Blue) (2) Check voltage
between N and 1 the
indoor/outdoor unit
terminal boards.
(2) Replace the out-
door unit control
PCB assembly.
(3) Check the outdoor
unit fuse.
(3) Replace the fuse/
outdoor unit con-
trol PCB assembly.
(4) Check 15-V,13-V
and 5-V voltages on
the PCB.
Check resistance
between IPM termi-
nals.
(4) Replace the out-
door unit control
PCB assembly.
(5) Check pins No.5 and
8 of connector CN3
of the outdoor unit
fan motor for short-
circuit.
(5) Replace the out-
door unit fan
motor.
(6) Outdoor unit control
PCB.
(6) Replace the out-
door unit control
PCB board.
Problem
symptom
Outdoor
unit indi-
cation
(LED1)
Indoor unit Malfunc-
tion No.
Content of diagnosis Check point Action
Lamp Main Sub Main Sub