IVT 09LR-N Service Manual page 41

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