Mitsubishi Electric SRK100VNPZJX, Техническое руководство

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Error code
Remote controller:
Content
1 time flash Keeps flashing
Keeps flashing
7 times flash ON
Indoor display
RUN light TIMER light
Green LED
Yellow LED
Red LED
Outdoor
control PCB
Outdoor
inverter PCB
E48
Outdoor fan motor anomaly
1. Applicable model
5. Troubleshooting
All models
Diagnosis Countermeasure
YES
NO
Does any foreign
material intervene in rotational area
of fan propeller?
NO
Does the
fan rotate smoothly when turned
by hand?
NO
Is DC280V
detected between (CNFAN
�
(red)-
�
(blue)) of fan motor
connector?
Is F2 fuse blown?
Is normal state restored?
YES
YES
NO
YES
NO
YES
Power supply reset
Remove foreign material.
Replace fan motor.
If resistance between
➀
(Vm):red -
➃
(GND):blue is
detected 1k
Ω
or lower, it is
faulty.
Check power supply
voltage.
Replace faulty fan motor
and control PCB.
Replace fan motor (If
anomaly persists after
replacing fan motor, replace
control PCB.)
Malfunction by temporary
noise
2. Error detection method
Detected by rotation speed of
outdoor fan motor
3. Condition of Error displayed
When actual rotation speed
of outdoor fan motor (FMo1)
drops to 100min
-1
or lower
for 30 minutes continuously,
the compressor and the
outdoor fan motor stop. After
3-minutes delay, it starts
again automatically, but if this
anomaly occurs 5 times within
60 minutes after the initial
detection.
4. Presumable cause
• Defective outdoor control
PCB
• Foreign material at rotational
area of fan propeller
• Defective fan motor
• Dust on outdoor control PCB
• Blow fuse
• External noise, surge
Note: When E48 error occurs, in almost cases F2 fuse (4A) on the outdoor control PCB is blown. There are a lot of cases that fuse is blown and E48
occurs due to defective fan motor. And even though only the outdoor control PCB ( or fuse) is replaced,, another trouble (*1) could occur.
Therefore when fuse is blown, check whether the fan motor is OK or not.
After confirming the fan motor normal, check by power ON. (Don't power ON without confirming the fan motor normal.)
*1 The error which does not seem to relate E48 may occur like as “
WAIT
”, Stay OFF of LED on outdoor control PCB, inverter
communication error (E45) and etc.
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'12 • PAC-T-174