Mitsubishi Heavy Industries FDURA251 User Manual

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1
Error display :
e5
[Communications error during operation]
Indoor unit
Red LED
Green LED
2 time flash
Keeps flashing
Red LED
Green LED
2 time flash
Keeps flashing
Outdoor unit
Is the connection
of the signal wires at the
outdoor unit poor?
Is the connection
of the signal wires at the
indoor unit poor?
Did the remote
controller’s LCD return
to normal?
“ WAIT ”
The unit is normal.
Malfunction was due to
transient noise, etc.
Go to display diagnosis (page 136).
YES
(1) (2)
NO
Repair Repair
Reset power
supply.
YES YES
NO
“ WAIT ”
Notes (1) Check for poor connections (disconnection, looseness) on the outdoor unit’s terminal block.
(2) Check for poor connections or disconnection of the signal lines between the indoor and outdoor units.
Reset power supply.
Did it return to normal?
YES
NO
Outdoor unit’s control PCB is
faulty. (Network communications
circuit is faulty.) Replace
Malfunction is due to noise, etc.
(The outdoor unit’s CPU went
out of control due to noise during
power on.)
Indoor unit
Red LED
Green LED
2 time flash
Keeps flashing
Red LED
Green LED
Stays OFF
Keeps flashing
Outdoor unit
2
Error display :
e32
[Power supply phases reversed]
Indoor unit
Red LED
Green LED
Stays OFF
Keeps flashing
Red LED
Green LED
1 time flash
Keeps flashing
Outdoor unit
Are the power supply
phases reversed?
YES
NO
Are the connections
to the reverse phase detection
circuit lines correct?
YES
Outdoor unit’s control PCB is faulty.
Replace
(Reverse phase detection circuit is faulty.)
Repair
NO
Repair

Mitsubishi Heavy Industries FDURA251 Specifications

General

Brand	Mitsubishi Heavy Industries
Model	FDURA251
Category	Air Conditioner
Language	English