R-ProField casesRefrigeration systems

Drain Pan Contamination / Blockage

Likely causes

Slime/algae growth from neglect

Check: Disconnect power and remove drain pan

What to do: Disconnect power and remove drain pan → Remove slime and debris (use neutral detergent and brush) → Check and clear drain outlet blockage → Verify tray slope (should tilt toward drain outlet) → Reassemble and run defrost cycle to confirm drainage → Consider adding drain tablets to prevent recurrence

Improper drain pan slope

Check: Remove slime and debris (use neutral detergent and brush)

What to do: Remove slime and debris (use neutral detergent and brush) → Check and clear drain outlet blockage → Verify tray slope (should tilt toward drain outlet) → Reassemble and run defrost cycle to confirm drainage → Consider adding drain tablets to prevent recurrence

Drain outlet blocked by debris

Check: Check and clear drain outlet blockage

What to do: Check and clear drain outlet blockage → Verify tray slope (should tilt toward drain outlet) → Reassemble and run defrost cycle to confirm drainage → Consider adding drain tablets to prevent recurrence

Field tip

Drain pan is overflowing from slime, scale, or debris. Clean the drain pan.

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