Samsung mini DVM Series Service Manual page 285

Troubleshooting
I
: Compressor Over Current Error
Outdoor unit display
Indoor unit display
Judgment method
Causes
1. Check Method
stop side or the emission Check Valve during some
11-22
(Operation)
When the ratio of (High pressure + 1) / (Low pressure + 1) is over 8.5 and it maintains for over
10 minutes.
Indoor & Outdoor EEV break and pipe clogging / High & Low sensor defect
Test operation
Is the service valve opened all?
Yes
Is the measuring value of
S-net same as the
value of the Manifold Gauge?
Yes
Are the indoor unit and outdoor unit EEV
operated normally?
Yes
Is there any clogged part in a piping
(Filter, etc.)?
No
Is there any leakage on the
liquid valve of the outdoor unit on the
outdoor units
are operated only?
No
Check the amount of refrigerant
(Timer) (Fan) (Filter)
No
No
No
Yes
Yes
(Defrost)
Connect the S-net and Manifold
Gauge (Requisite)
Open the service valve.
Replace the pressure sensor.
Check the relevant EEV.
Check the pipe.
Replace the relevant parts.
Samsung Electronics