Samsung mini DVM Series, Service Manual

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Troubleshooting
Samsung Electronics 12-22
■
: Compressor Over Current Error
1. Check Method
Outdoor unit display
Indoor unit display (Operation) (Timer) (Fan) (Filter) (Defrost)
Judgment method
When the ratio of (High pr 1) / (Low pr 1) is over 8.5 and it maintains for over
10 minutes.
Causes Indoor & Outdoor EEV break and pipe clogging / High & Low sensor defect
Is the service valve opened all?
Is the measuring value of
S-net same as the
value of the Manifold Gauge?
Are the indoor unit and outdoor unit EEV
operated normally?
Is there any clogged part in a piping
(Filter, etc.)?
Is there any leakage on the
liquid valve of the outdoor unit on the
stop side or the emission Check Valve during some
outdoor units
are operated only?
Open the service valve.
Connect the S-net and Manifold
Gauge (Requisite)
Replace the pressure sensor.
Check the relevant EEV.
Check the pipe.
Check the amount of refrigerant
Replace the relevant parts.
Test operation
No
No
Yes
No
Yes
Yes
No
Yes
Yes
No