A walk-in cooler that is not cooling is most often caused by a dirty or blocked condenser, an iced-up evaporator coil, a bad door gasket letting warm air in, low refrigerant from a leak, or a failed contactor, fan or compressor. Check that the condenser is clean and the door seals, and look for ice on the coil; if temperature keeps rising, call for emergency commercial refrigeration repair right away to protect your inventory.
Common causes
- Dirty or blocked condenser coil
- Iced-over evaporator coil (defrost fault)
- Worn door gasket or door left ajar
- Low refrigerant from a leak
- Failed contactor, fan motor or compressor
Protect inventory now
- Keep the door shut and move critical product if you can
- Clear anything blocking the condenser airflow
- Check for ice on the coil and a failed door seal
- Note the current temperature and how fast it is rising
Call First Response for same-day, priority commercial refrigeration repair across San Antonio, 24/7.
Frequently asked questions
How fast can you respond to a walk-in down?
Same day, 24/7. Commercial refrigeration gets priority because inventory loss adds up fast.
Why is my evaporator coil iced over?
Usually a defrost system fault or a door seal letting in humid air. We find and fix the root cause.
Can a maintenance plan prevent this?
Yes. Scheduled maintenance catches dirty coils, weak seals and low refrigerant before they shut you down.