R-Pro › Field cases › Refrigeration systems
Partial Operation - Incomplete Power or Communication Error
Likely causes
Control power voltage unstable or undervoltage
Check: Measure control power voltage (DC 12V or 24V, etc.)
What to do: Measure control power voltage (DC 12V or 24V, etc.) → Check all PCB power and communication terminal connections → Check error codes (refer to manual) → Inspect communication wiring (RS485, CAN, etc.) → Replace power supply PCB if faulty
Communication wiring between PCBs faulty
Check: Check all PCB power and communication terminal connections
What to do: Check all PCB power and communication terminal connections → Check error codes (refer to manual) → Inspect communication wiring (RS485, CAN, etc.) → Replace power supply PCB if faulty
Control power unstable from faulty power supply capacitor
Check: Check error codes (refer to manual)
What to do: Check error codes (refer to manual) → Inspect communication wiring (RS485, CAN, etc.) → Replace power supply PCB if faulty
Some panel response but operation is not normal. Inspect control power voltage and communication wiring.
All 565 cases work offline in R-Pro, with error codes for 62 brands and P-T data for 108 refrigerants.
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