184 Part Number STH025 8/12
Symptom #2 Machine is running and the display
has a flashing alert triangle and indicates “HPC
Fault” after the left arrow is pressed
1. Navigate to the event log on the Service menu.
Scroll down to HPC Fault EO5. Open the event
and view when and how often HPCO Fault has
occurred.
2. If this is a one time event it may be intermittent
and caused by conditions around the unit
changing. For example: High ambient
temperature, water turned off to condenser (water
cooled unit) etc.
3. Run the system to see if the control trips at the
rated pressure. If HPCO opens at a pressure
significantly lower than the control setting of 450
psig replace the HPCO.
4. If the control opens at the correct pressure (+-10
lbs) find the root cause - Fan motor, dirty condenser,
refrigeration system issue, etc.
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