Friedrich MRM09Y1J Service Manual

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Installation and Maintenance
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Troubleshooting
for U8 malfunction
Re-energize1
minute after
de-erergization
U8 is still
displayed
The unit returns to normal.
Conclusion:U8 is displayed due
to instant energization afte de-
energization while the capacitor
discharges slowly.
The zero-cross detection
circuit of the mainboard is
defined abnormal.Replace
the mainboard with the same
model
End
No
Yes

Friedrich MRM09Y1J Specifications

General

Brand	Friedrich
Model	MRM09Y1J
Category	Air Conditioner
Language	English