Mitsubishi FDCVA302HENR, Руководство пользователя

Страница: 118 / 199

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117
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16
Error display :
e54
[Low pressure sensor is faulty]
Indoor unit
Red LED
Green LED
Stays OFF
Keeps flashing
Red LED
Green LED
1 time flash
Keeps flashing
Outdoor unit
YES
NO
NO
Correction
Replace the low
pressure sensor
NO
Replace the outdoor
unit inverter PCB.
Did it return to normal?
YES
Are the low pressure sensor
connector connections (sensor
side, board side) OK?
Does the pressure (actual
measurement) match the remote
controller’s display value.
Is the amount of refrigerant proper?
Is the refrigeration circuit abnormal?
●
Display Conditions
If the voltage sensed by the voltage sensor is 0 V or lower, or 3.49 V or higher
continuously for 5 seconds between 2 minutes and 2 minutes 20 seconds after
the compressor goes ON, the compressor stops. After a 3-minute delay, the
compressor starts again, but if it occurs 3 times in 40 minutes.
Note (1) See page 120 concerning the operation data display method
in the remote controller.
17
[Abnormalities in compressor starting] Error display :
e59
Indoor unit
Red LED
Green LED
Stays OFF
Keeps flashing
Red LED
Green LED
5 time flash
Keeps flashing
Outdoor unit
NG NG
NO
NG
YES
Check of power supply
Replacement
compressor
Replacement
compressor
OK
Check the refrigerant level
and refrigerant circuit.
Inverter
NG
Inverter
OK
Check
the compressor’s
insulation resistance
and winding
resistance.
Check of
power transistor
module
(Reference to 118)
Is the balance
pressure appropriate
during starting?
Is the power
supply voltage
correct proper?
(1)
(2)
YES
Carry out test operation
(starting) another 2 or 3 times.
Did it improve?
Replace the outdoor
unit inverter PCB
Started
Didn’t
start.
If the compressor does
not move at all, and
there are no minute
vibrations or sounds.
Disconnect the outdoor
unit’s fan motor and
run it (start it).
To the following flow
chart.
Replace the outdoor unit’s fan motor.
Compressor starts
●
Display conditions
(1) If it won’t start 10 times out of 20 attempted starts.
(2) Remote controller reset is possible after 3 minutes have passed.
Note (1) If the test operation is repeated 2 or 3 times, the liquid re-
frigerant inside the compressor may be expelled from the
compressor may recover from its starting abnormality.
Note (1) Check if the power supply system is normal.