A commercial fridge not cooling is a food-safety clock, not a waiting game. Prep counters, upright Gastronorm cabinets and back-bar units in restaurants, pubs, takeaways, cafes, shops and hotels should hold roughly 1 to 5°C. If the display is 8°C and chicken in the well is 10°C, you already have an HACCP problem. This checklist is for duty managers. It is not a DIY gas recharge. Cold Direct repairs commercial plant only. We do not do household repairs. If the five checks fail, book fridge repair London or commercial fridge repair North London on 07983 759320.
Check 1: Probe product, not the door air
Air at an open door is always warmer than the core of a vacuum pack on the bottom shelf. Use a calibrated probe in the middle of a high-risk item. A commercial fridge not cooling is confirmed when product stays above 8°C after the door has been shut for twenty minutes. Note the time. EHO conversations go better when you have a log, not a memory. Hotels and restaurants should keep using their own HACCP sheets while the engineer is travelling.
Check 2: Condenser, grille and kitchen heat
A blocked condenser behind a takeaway counter or under a cafe espresso machine will make a healthy compressor look dead. Pull the kick plate if it is safe. Vacuum lint and grease. Leave air behind the cabinet. Do not hose a live tray. If the room is 32°C and the fridge sits next to a chargrill, recovery will be slow even after a clean. Shops with glass-door merchandisers packed tight against a wall see the same pattern. Clearing the coil sometimes restores the last two degrees. Sometimes the fan motor has already failed.
Check 3: Door seals, lights and loading
A torn gasket on a Williams, Foster, Polar, True, Blizzard, Gram or Lec catering fridge lets kitchen air in all service. Paper-in-the-door is the test. Overloading a prep rail so lids cannot close is an operations issue, not a compressor issue. Interior lights left on in a display fridge add heat. Pubs that leave the back-bar door open for speed will report a commercial fridge not cooling every Friday night. Close it. If the magnet still will not hold, you need a seal, not a lecture.
Check 4: Ice on the evaporator and drain
Open the inner liner. A film of frost is normal. A block over the fan is not. Ice is insulation. The coil cannot take heat out, so the thermostat keeps calling and the cabinet warms. Isolate power and allow a controlled defrost. Do not chip with a knife. If ice returns the next day, defrost, drain or gasket work is due. That is a commercial call-out, not a household defrost button.
Check 5: Controller, set point and power
After a power cut, some boards boot to a warmer set point. Staff then say the commercial fridge not cooling when it is simply set to plus 8. Photograph the display and data plate. Check the isolator and plug. A silent compressor with a warm cabinet and a clear coil is past DIY. Relays, capacitors and compressors are engineer jobs. Adding refrigerant without a leak test is not a staff task and is illegal without F-Gas competence.
What not to do
Do not keep adding chilled deliveries to a cabinet that is already at 10°C. Do not move high-risk food into a freezer “for an hour” without a plan for thaw and records. Do not buy a random thermostat from a marketplace and expect it to match a Dixell or Carel board. Do not call a domestic appliance firm for a stainless catering fridge. Cold Direct will not attend a Bosch or Beko in a flat.
When to stop checking and call
Call if product is still above 8°C after the five checks, if you hear the compressor short-cycle, if there is a pool of water under a prep fridge, or if an alarm will not clear. North London restaurants, pubs, takeaways, cafes, shops and hotels are inside our usual 60 to 90 minute window. East and central sites are covered on the same diary. Tell us make, model, postcode and whether the site is open. We diagnose on site and price before parts. For the full service pages use fridge repair London and commercial fridge repair North London.
What Cold Direct does on arrival
We measure air on and off the coil, check the condenser and fans, look at the gasket and drain, and only then discuss gas or compressor work. You get a clear price. You keep food-safety decisions. Warranty covers the agreed commercial repair, not dumped stock. Emergency contact is 24/7 on 07983 759320. Commercial only. We do not do household repairs.
If the five checks restored temperature, keep the condenser on a weekly wipe and the door closed between picks. If they did not, stop experimenting and book the engineer. A warm commercial fridge in a restaurant, pub, takeaway, cafe, shop or hotel is cheaper to fix today than after an EHO visit tomorrow.