Mitsubishi Heavy Industries FDURA501 User Manual

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139
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7
Error display :
e9
[Drain trouble]
Indoor unit
Red LED
Green LED
1 time flash
Keeps flashing
Red LED
Green LED
Stays OFF
Keeps flashing
Outdoor unit
Correction
Replacement indoor
unit control PCB
Replacement indoor
unit PCB
YES
NO
NO
NO
NO
Is there any
overflow?
DM
operation
DC 12 V
at both terminals
of CNI?
YES
NO
Abnormal data check
in remote controller
Drain motor ON from
remote controller.
YES
YES
Is drain
piping unclogged?
Is the slop OK?
AC 220/240 V
at both terminals
of CNR?
Note (1) DM: Drain motor
YES
DM check of
motor wiring
Float switch check
DM check
(1)
(1)
(1)
6
Error display :
e8
[Heating overload]
Indoor unit
Red LED
Green LED
1 time flash
Keeps flashing
Red LED
Green LED
Stays OFF
Keeps flashing
Outdoor unit
YES
Is the air filter clogged?
NO
YES
Are the connections to
the indoor heat exchanger thermistor
OK?
Are the characteristics of
the indoor heat exchanger thermistor
OK?
Does the heating
overload state exist?
NO
YES
NO
NO
YES
Notes (1) Check if the overload state exists or not using the following check points.
Is there a short circuit?
Is the indoor heat exchanger dirty or clogged?
Is the outdoor unit’s fan control normal?
Is the indoor or outdoor air temperature too high?
(2) See the figure page 138 for indoor heat exchanger thermistor characteristics.
(( ((
Compressor
operation
Compressor stop
56
63
Indoor unit heat exchanger temp. (˚C)
Check the remote controller for abnormal data.
Clean it.
Defective indoor unit heat
exchanger thermistor
Replacement
Repair
Check the cooling system.
Adjust
● Display condition
An abnormal stop occurs if this state is detected 5 times within 60 minutes of the
first detection, and if a temperature of 63ºC or higher is detected in the indoor heat
exchanger continuously for 6 minutes.
● Abnormal Temperature Detection

Mitsubishi Heavy Industries FDURA501 Specifications

General

Brand	Mitsubishi Heavy Industries
Model	FDURA501
Category	Air Conditioner
Language	English