Hypertherm DuraChill 5 HP Air-Cooled Chiller For Hypertherm - Manual (Page 21)

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Section 7 – Troubleshooting
WARNING: Refer servicing to qualified service personnel. When power is on, dangerous
voltages exist within chassis components. Use extreme care when measuring voltages on
live circuits.
7.1 Unit Will Not Operate (no cooling or pumping)
• Check that the power cord is plugged in to an operating electrical outlet.
• Check that the Circuit Breaker/Power Switch is ON.
• Check that the front panel Power Switch is ON.
7.2 No Pumping
• Check the fluid level in the whole system to make sure the pump is receiving fluid.
• Check if the pump motor is operating.
• Check for blockage within the circulating system.
7.3 Insufficient Pumping
• Check for low line voltage.
• Check for too small of a hose diameter.
• Check for too high of a fluid viscosity.
• Check for restrictions in the connecting tubing.
7.4 No Cooling or Insufficient Cooling
• Check for low or high line voltage.
• Check for blocked airflow through air filters.
• Check ambient air temperature. High air temperature may cause the refrigeration compressor to temporarily shut
down.
• Check for excessive heat being transferred to the cooling fluid liquid as this may exceed the cooling capacity of the
refrigeration system.
7.5 Triac Failure “Ft 10”
• Triac fault message appears on the display, indicating that the triac has failed or the line supply voltage has a
source of extreme interference from other equipment. Plug the unit into another power source. If it still displays triac
failure, a triac or triac driver needs replacement.
7.6 Internal Probe Failure “Ft 11”
• The Internal Probe failure message appears on the display, indicating that the internal probe has failed or there is a
problem with the circuitry reading the probe signal. Contact supplier.
7.7 Pump Overload Fault “Ft 19”
• Check fuses located inside front electrical box.
• Check pump overload relay. There is a reset button located in the upper right corner of the overload relay and the
tripping value is adjustable.
• If alarm persists, contact supplier.
7.8 Fan Overload Fault “Ft 21”
• Check fuses located inside front electrical box.
• Check fan overload relay. There is a reset button located in the upper right corner of the overload relay and the
tripping value is adjustable. If alarm persists, contact supplier.