Cold Room Not Cooling? A 10-Minute Emergency Checklist

The temperature alarm is going off, or someone has noticed the cold room is warm. Stay calm: there’s a lot you can check in ten minutes, and quick action protects your stock.

Safety first: don’t open electrical panels, handle refrigerant or work on live equipment. These checks are visual and safe for kitchen staff.

Step 1: Check the obvious (2 minutes)

• Is the door fully closed? Check that the gasket seals all the way round and nothing is blocking the door.
• Is there power? Is the controller display on? Check whether a breaker has tripped. If it trips again immediately, leave it off and call a technician.
• Check the set point. Has someone changed the thermostat or controller setting?

Step 2: Look at the evaporator (3 minutes)

• Is the fan inside the room running?
• Is the coil covered in thick ice? If so, the system may be stuck or failing to defrost, and airflow is blocked.
• Are stacked boxes blocking the airflow in front of the evaporator?

Step 3: Look at the condensing unit outside (3 minutes)

• Is the fan spinning?
• Is the coil blocked by dust, grease, cardboard or plastic?
• Is the unit enclosed or surrounded by hot air? Clear any obstructions around it.

Step 4: Protect your stock (2 minutes)

• Keep the door closed. A closed, well-insulated room holds its temperature for some time.
• Move the most sensitive products (seafood, dairy, meat) to other working units if you can.
• Record temperatures and times. You’ll need them for food safety decisions and any insurance claim.
• If food has been above safe temperatures for too long, follow your food safety procedures and your local authority’s guidance. When in doubt, throw it out.

When to call a technician immediately

• The breaker trips again after resetting
• The compressor is silent, humming, or clicking on and off
• There’s an oily residue on pipes (a possible refrigerant leak)
• Heavy ice keeps returning on the evaporator
• Nothing above explains the problem

Preventing the next breakdown

Most emergency call-outs we attend could have been avoided with regular servicing: clean coils, working defrost, good door seals and a temperature alarm that alerts you early. Our maintenance checklist shows what to check, and a maintenance contract means we take care of it for you.