R-Pro › Field cases › Refrigeration systems
Low Pressure Drop from Evaporator Fan Failure
Likely causes
Fan motor failure
Check: Check if evaporator fan is running
What to do: Check if evaporator fan is running → Refer to 'Evaporator Fan Not Running' diagnostic tree → Verify low pressure normalizes after fan repair
Poor power supply to fan
Check: Refer to 'Evaporator Fan Not Running' diagnostic tree
What to do: Refer to 'Evaporator Fan Not Running' diagnostic tree → Verify low pressure normalizes after fan repair
Fan failed to restart after defrost
Check: Verify low pressure normalizes after fan repair
What to do: Verify low pressure normalizes after fan repair
Field tip
Evaporator fan failure stopping heat exchange, causing low pressure. Refer to 'Evaporator Fan Not Running'.
All 565 cases work offline in R-Pro, with error codes for 62 brands and P-T data for 108 refrigerants.
Open R-Pro →Related cases
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