Mitsubishi FDC 6 Series User Manual

24
15
10
5
010 304020 50
5kΩ at 25˚C
Temperature (˚C)
Note (1) 22.5 kΩ at -6˚C
Return air thermistor (Th
I- A)
Indoor unit heat exchanger thermistor
(Th I- R)
Resistance temperature characteristics
Resistance (kΩ)
YES
YES
NO
NO
Is the indoor
unit heat exchanger
thermistor connector
connection OK?
Correction
Are characteristics
of indoor unit heat
exchanger thermistor OK
or is not there any
broken wire?
Defective indoor unit PCB Replace-
ment (Defective indoor unit heat
exchanger thermistor input circuit)
Defective indoor unit heat exchanger
thermistor Replacement
YES YES
NO
NO
Is the return air
thermistor connector
connection OK?
Correction
Is the return air
thermistor characteristics
OK or is there a
broken wire?
Defective return air
thermistor Replacement
Defective indoor unit PCB
Replacement (Defective return air
thermistor input circuit)
Note (1) Characteristics as per the above
graph.
2
Error display :
e 6
[Defective indoor unit heat exchanger thermistor]
3
Error display :
e 7
[Defective return air thermistor]
()
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)
4
Error display :
e 8
[Heating overload]
Note (1) To see whether or not it is over-
loaded, check the following:
s Is the inside/outside air
temperature too high?
sIs there any short circuit?
sIs the refrigerant excessive?

Mitsubishi FDC 6 Series Specifications

General

Brand	Mitsubishi
Model	FDC 6 Series
Category	Air Conditioner
Language	English