Cold Rooms & Walk-ins

Walk-in cooler temperature drifting overnight

Cold room holds temperature by day and drifts at night

Safe preliminary checks permitted

Temperature rise overnight with normal daytime operation

Likely causes

· Defrost terminating on time limit
· Door left ajar during deliveries
· Condensing unit short cycling

Safe preliminary checks

· Note the highest and lowest recorded temperature and the times
· Confirm the door closer and heater wire are intact
· Check the drain is not iced over

When it needs a professional

Probe calibration and refrigerant-side checks require a refrigeration technician.

Stop immediately if

· Smoke, burning smell or water on live parts
· Refrigerant leak, gas odour or pressure vessel noise