Mitsubishi FDT208HEN-S, Инструкция по эксплуатации

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276
FDTN-H
( )
YES YES
NO
NO
Are the heat
exchanger thermistor
characteristics OK, is
there no short
circuit?
YES
NO
Is the indoor
unit heat exchanger
thermistor connector
connection OK?
YES
NO
Is the air filter
clogged?
Correction
Washing
Adjustment
Is the heating
under overload?
Defective indoor unit PCB
Replacement (Defective indoor unit heat
exchanger thermistor input circuit)
Defective heat exchanger
thermistor Replacement
(1)
Heating overload
Note (1) To see whether or not it is over-
loaded, check the following:
u
Is the inside/outside air tem-
perature too high?
u
Is there any short circuit?
u
Is the refrigerant excessive?
5
Indoor unit
Check Lamp (yellow) 6 time flashes
Abnormality casued by insufficient refrigerant.
4
Indoor unit
Check Lamp (yellow) 5 time flashes
NO
YES
Is the
amount of refrigerant
circulation good? (If refrige-
rant is insufficient, the ca-
pillary tubes may be
plugged.)
Printed circuit board for indoor
unit no good replace.
Charge with refrigerant.
Replace capillary tubes.
NO
YES
Are the
characteristic values for
the heat exchanger
thermistor OK?
Replace heat exchanger thermistor.
Note (1) Refer to previous page for heat exchanger thermistor tempera-
ture resistance characteristic values.
YES
YES
YES
NO
Is there any
overflow?
NO
Is the float
switch tripper?
Note (1) Check if power source is there between DM connectors.
Is the angle of
drain piping good. Is there
any problem?
YES
NO
(1)
Is there output
for condensate motor
(DM)?
Defective indoor unit PCB Replace-
ment (Defective DM driving output cir-
cuit, defective float switch input cir-
cuit)
Repair or replace the
float switch
Defective indoor unit PCB Replace-
ment (Defective condensate motor output
circuit)
●
Check DM broken wire, burning, locking.
●
Are there any DM connector loose.
●
Are there any PCB faston terminal loose.
●
Are there any DM wire broken.
Repair
Drain abnormality
3
Indoor unit
Check Lamp (yellow) 4 time flashes