MCAC-VTSM-2015-10 R410A All DC Inverter V5 X Series 50Hz
Troubleshooting 157
Guide for compressor replacement
Step 1: Remove the compressor from the faulty outdoor unit, pour out the oil from the compressor according to
the method illustrated. Normally the oil will flow out from the discharge pipe of the compressor.
Step 2: Inspect system oil
Normally the oil should be clear and transparent, slightly yellow is also not an indication on any problems.
However, if the oil is dark, black or contains impurities, the system has problems and the oil needs to be
changed.
The oil is black, it
has been carbonized
The oil is a little
yellow, but it is clear
and transparent, the
quality is
acceptable
Cloudy or gray oil
indicates
abnormal system
operation
This sample
contains copper bits
The oil is still
transparent, but
there is impunity in
the oil, the
impunity may clog
the filter
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