TS13-01 Troubleshooting manual 14
OVERALL CURRENT CONTROL
- To monitor the overall current and to restrict the compressor upper limit rotation in order to prevent
circuit breakers from exceeding the rated capacity.
- Detected during compressor running.
- When the input current for running compressor exceeds L2, running frequency will be reduced by 1 step.
If current still exceeds L2, frequency will be reduced by another 1 step until total current falls between
L2 and L3.
- This protection cut in when the input current exceeds L1 for 2 seconds –(RXN-LV ).Compressor will
stop and it is considered total current overload.
- If input current <L3, the compressor frequency is reset based on the OD ambient, set and room
temperature.
OIL RECOVERY CONTROL
- When the compressor operates for certain duration at low frequency, the oil level in the compressor may
become low due to incomplete oil return.
- To prevent damage to the compressor or compressor lock due to low oil lever.
- To promote refrigerant flow to carry the oil back to the compressor.
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