-
348
-
'13 • PAC-T-197
1.12 MAINTENANCE DATA
1.12.1 Diagnosing of microcomputer circuit
(1) Selfdiagnosis function
(a) Check Indicator Table
Whether a failure exists or not on the indoor unit and outdoor unit can be know by the contents of remote control error code,
indoor/outdoor unit green LED (power pilot lamp and microcomputer normality pilot lamp) or red LED (check pilot lamp).
Note (1) SRK series only.
At the indoor unit side, errors are displayed with the combination of RUN light and TIMER light on the display panel.
(i) Indoor unit
1) FDT, FDTC, FDEN, FDU, FDUM, FDF series
Remote control
Indoor control PCB
Outdoor control PCB
Location of
trouble
Description of trouble
Repair method
Reference
page
Error code Red LED Red LED
Green
LED (1)
Red LED
Green
LED (1)
No-indication Stays OFF
Stays OFF
Keeps
flashing Stays OFF
Keeps
flashing
—
• Normal operation
—
—
Stays OFF Stays OFF
2-time
flash
Stays OFF Indoor unit power
supply
• Power OFF, broken wire/blown fuse, broken transformer wire
Repair
394
*
3-time
flash
Keeps
flashing Stays OFF
Keeps
flashing
Remote control
wires
• Poor connection, breakage of remote control wire * For wire breaking at power ON, the
LED is OFF.
Repair
395
Remote control • Defective remote control PCB
Replacement of
remote control
WAIT
or
INSPECT I/U
Stays OFF
Keeps
flashing
2-time
flash
Keeps
flashing
Indoor-outdoor
units connection
wire
• Poor connection, breakage of indoor-outdoor units connection wire
Repair
396
-
403
Remote control • Improper setting of master and slave by remote control
Keeps
flashing
Stays OFF
*
Keeps
flashing Stays OFF
Keeps
flashing
Remote control
wires (Noise)
•
Poor connection of remote control signal wire (White)
•
Intrusion of noise in remote control wire
* For wire breaking at power ON, the LED is OFF
Repair
405
Remote control
indoor control PCB
*
• Defective remote control or indoor control PCB (defective communication circuit)?
Replacement of
remote control or
PCB
2-time
flash
Keeps
flashing
2-time
flash
Keeps
flashing
Indoor-outdoor
units connection
wire
•
Poor connection of wire between indoor-outdoor units during operation
(disconnection, loose connection)
•
Anomalous communication between indoor-outdoor units by noise, etc.
Repair
406
2-time
flash
Keeps
flashing Stays OFF
Keeps
flashing
(Noise)
•
CPU-runaway on outdoor control PCB
Power reset or
Repair
Outdoor control
PCB
*
• Occurrence of defective outdoor control PCB on the way of power supply (defective com-
munication circuit)?
Replacement of
PCB
2-time
flash
Keeps
flashing Stays OFF Stays OFF
Outdoor control
PCB
•
Defective outdoor control PCB on the way of power supply
Replacement
Fuse
•
Blown fuse
1-time
flash
Keeps
flashing Stays OFF
Keeps
flashing
Indoor heat
exchanger tempera-
ture thermistor
•
Defective indoor heat exchanger temperature thermistor
(defective element, bro-
ken wire, short-circuit)
• Poor contact of temperature thermistor connector
Replacement, repair
of temperature
thermistor
407
Indoor control PCB
*
•
Defective indoor control PCB (Defective temperature thermistor input
circuit)?
Replacement of
PCB
1-time
flash
Keeps
flashing Stays OFF
Keeps
flashing
Indoor return air
temperature therm-
istor
•
Defective indoor return air temperature thermistor
(defective element, broken wire,
short-circuit)
• Poor contact of temperature thermistor connector
Replacement, repair
of temperature
thermistor
408
Indoor control PCB
*
•
Defective indoor control PCB (Defective temperature thermistor input
circuit)?
Replacement of
PCB
1-time
flash
Keeps
flashing Stays OFF
Keeps
flashing
Installation or oper-
ating condition
•
Heating over-load
(Anomalously high indoor heat exchanger temperature)
Repair
409
Indoor heat
exchanger tempera-
ture thermistor
•
Defective indoor heat exchanger temperature thermistor (short-circuit)
Replacement of
temperature therm-
istor
Indoor control PCB
*
•
Defective indoor control PCB
(Defective temperature thermistor input circuit)?
Replacement of
PCB
1-time
flash
Keeps
flashing Stays OFF
Keeps
flashing
Drain trouble
•
Defective drain pump (DM), broken drain pump wire
, disconnected connector
Replacement, repair
of DM
410
Float switch
•
Anomalous float switch operation
(malfunction)
Repair
Indoor control PCB
*
•
Defective indoor control PCB
(Defective float switch input circuit)
*
•
Defective indoor control PCB
(Defective DM drive output circuit)?
Replacement of
PCB
Option
•
Defective optional parts
(At optional anomalous input setting)
Repair
Stays OFF
Keeps
flashing Stays OFF
Keeps
flashing
Number of con-
nected indoor units
•
When multi-unit control by remote control is performed, the number of units
is over
Repair
411
Keeps
flashing
Keeps
flashing Stays OFF
Keeps
flashing
Address
setting error
•
Address setting error of indoor units
Repair
412
3-time
flash
Keeps
flashing Stays OFF
Keeps
flashing
Indoor unit No. set-
ting
•No master is assigned to slaves.
Repair
413
Rcmote control wires •Anomalous remote control wire connection, broken wire between master and slave units
1(2)-time
flash
Keeps
flashing Stays OFF
Keeps
flashing
Fan motor
•
Defective fan motor
Replacement, repair
414
Indoor power PCB •
Defective indoor power PCB
Replacement
1-time
flash
Keeps
flashing Stays OFF
Keeps
flashing
Address
setting error
•Address setting error of master and slave indoor units
Repair
415
1-time
flash
Keeps
flashing Stays OFF
Keeps
flashing Indoor control PCB •
Improper operation mode setting
Repair
416
Summary of Contents for V Multi 100VNX
Page 98: ... 97 13 PAC T 197 Models FDT100VF1 125VF 140VF H H H H H C B A F G D G PJF000Z285 A ...
Page 101: ... 100 13 PAC T 197 Models FDEN60VF 71VF1 C2 C1 A B A B D C1 C2 C1 C2 E G F C PFA003Z817 ...
Page 116: ... 115 13 PAC T 197 b Wireless remote control RCN E1R 60 17 150 Unit mm ...
Page 291: ... 290 13 PAC T 197 261 12 PAC T 173 ー K ...
Page 590: ... 589 13 PAC T 197 3 8 SUPER LINK E BOARD SC ADNA E F ...
Page 591: ... 590 13 PAC T 197 ...