FixGrid Academy — Field checklist
Reach-in Cooler Warm
Commercial reach-in refrigerator · Intermediate
Reach-in running warm in service. Airflow at the evaporator before anything refrigerant-side.
1Safety first
- Open and lock out the disconnect or unplug the unit.
- Confirm dead with a non-contact tester.
- Watch for ice, standing water, and sharp coil fins.
- Gloves and eye protection; towels staged for melt water.
2First checks
- Take your own product and air temperatures — do not trust the display.
- Check door gaskets, hinges, and how often the door is being opened.
- Confirm the condensing unit runs and the evaporator fan turns.
- Look for over-packed shelves blocking return air.
3Narrow the system
- Split it: load/door vs airflow/defrost vs refrigeration side.
- Pull the evaporator cover and inspect the coil for ice or lint.
- Check the condenser coil and filter for blockage.
- Review defrost settings and drain line condition.
4Highest-probability tests
- Test the evaporator fan motor: runs freely, correct amps, correct rotation.
- Confirm the coil is clear after a controlled defrost.
- Check the defrost termination and thermostat/controller sensor placement.
- Verify suction line condition and look for frost back.
5Common outcomes and watch-outs
- Most common: iced or restricted evaporator, often behind a failed evap fan.
- Replace the fan and clear the ice — treating only the ice guarantees a callback.
- Coach the staff on loading and door discipline.
- Log pull-down and hold temperatures before you leave.