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Mitsubishi Heavy Industries Manuals
Air Conditioner
SRK20ZSX-W
Service manual
Power Transistor Anomaly - Mitsubishi Heavy Industries SRK20ZSX-W Service Manual
Inverter multi-split system residential air conditioner
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Also See for SRK20ZSX-W
:
Service manual
(164 pages)
,
User manual
(40 pages)
,
Technical manual
(358 pages)
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Table Of Contents
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
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Error code
Error code
Remote control:
E51
Remote controller: E51
1. Applicable model
All models
2. Error detection method
Power transistor primary current
3. Condition of error displayed
If the power transistor primary
current exceeds the setting value
for 3 seconds, the compressor
stops.
4. Presumable cause
• Outdoor unit main PCB
anomaly
• Dust on outdoor unit main PCB
• Blown F2 fuse
Note:
LED
Green
Red
LED
Green
Red
Indoor
Keeps flashing Stays OFF
Keeps flashing Stays Off
Indoor
–
1-time flash
Outdoor
5. Troubleshooting
Diagnosis
Check soldered
surfaces on the outdoor unit main PCB
for foreign matter like dust,
fouling,etc.
YES
Is F8 fuse
(250V, 20A)blown?
150
-
Content
Content
Power transistor error
Power transistor anomaly
(Models SRC50, 60)
NO
YES
NO
-
'19 • SCM-SM-276
Countermeasure
Remove foreign matter
like dust, fouling, etc.
Replace fuse.
Defective outdoor unit
main PCB Replace.
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This manual is also suitable for:
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Srr50zs-w
Srr60zs-w
Fdtc25vh
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Fde50vh
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