If the chiller is powered but nothing shows on the display, work through these checks in order.

What to check

  1. Main breaker Q1. Make sure the breaker handle is in the ON (up) position.
  2. Supply phases. Check that power is present on L1, L2 and L3 and that the phase order is correct.
  3. Power board fuse. Check the 250 V 2 A fuse on the power board. A spare fuse is stored in the electrical box, wrapped in plastic.

If the fuse is good and power is present but the display stays blank, the power supply unit or display board has failed.

Parts

Still showing the alarm?

Call 847-466-5459 or email admin@industrynestparts.com with the alarm code, the chiller model and serial number from the nameplate, your machine model, and the supply voltage and frequency. If you can, press the PARA key and send us the parameter readings shown on the display. That lets us find the cause and the right part on the first call.

All Kwangrim alarm codes | Kwangrim manuals and drawings

These steps come from Kwangrim service documentation and apply to Kwangrim NANOCON CIL, CIC and CIW chillers. Turn off and lock out power before opening the chiller. Electrical and refrigeration work should be done by qualified technicians.