Active Filter Voltage Error - Mitsubishi Heavy Industries SRK20ZSX-W Service Manual

Error code Error code
Remote control: Remote control: E47
1. Applicable model
All models
2. Error detection method
Error is displayed if the
converter voltage exceeds
DC340V (3 times within 20
minutes). Remote control may
be set after 3-minute delay.
3. Condition of error displayed
Same as above
4. Presumable cause
• Defective outdoor unit sub
PCB
• Dust on outdoor unit sub PCB
• Anomalous power source
Note:
LED LED Green Green Red Red
Indoor Indoor Keeps flashing Stays OFF
– 2-time flash
Outdoor Outdoor
5. Troubleshooting
Diagnosis
Is the power source normal?
YES
Is voltage
within the specified range?
YES
Check
soldered surfaces on the
outdoor unit sub PCB for foreign matter
like dust, fouling,
etc.
• If the overvoltage (DC voltage is higher than 400V) occurs,
the system shut down to protect the unit.
148
-
Content Content

Active filter voltage error

NO
NO
NO
YES
-
'19 • SCM-SM-276
Countermeasure
Restore normal condition.
Restore normal condition.
Remove foreign matter like
dust, fouling, etc.
Defective outdoor unit sub
PCB ➞ Replace.