Gram Commercial Walk-In Cooler Thermostat Issue in St. Augustine, FL
Temperature inaccurate, cycling abnormally. Bad thermostat or temperature sensor. We fix this on Gram Commercial walk-in coolers across St. Augustine. You get a two-hour arrival window, not a vague 'sometime today'.

Why your Gram Commercial walk-in cooler is thermostat issue
A Gram Commercial walk-in cooler that is thermostat issue tends to show the same signs: temperature inaccurate, cycling abnormally. Bad thermostat or temperature sensor. Nine times out of ten it comes down to failed temperature sensor. Left unaddressed, food or stock can spoil within hours.
Most likely causes
- A bad control board
- Failed temperature sensor
- Stuck thermostat contacts
- A miscalibrated thermostat
- Wiring fault to the sensor
Known Gram Commercial walk-in cooler weak points
- door gasket wear causing temperature rise and condensation
- evaporator icing from failed defrost cycles or worn seals
- condenser fan and compressor faults on reach-in cabinets
- electronic controller and temperature-sensor faults
Quick check — and when it's not DIY
The one self-check that's actually worth your time: compare the reading against a separate thermometer placed in the same spot for an hour. Should that not clear it, a sensor that's confirmed inaccurate has to be replaced and recalibrated against the control board — guessing which part is at fault wastes a parts order.
How we fix it
We start with a full diagnostic on the Gram Commercial walk-in cooler, confirm the real fault, then price it flat. OEM parts are sourced through Hoshizaki/Gram distributors and can have longer lead times as an imported brand; sealed-system refrigerant repairs requires an experienced technician. Most thermostat issue jobs finish same-day, at a flat price, under our warranty.
independent commercial service experienced with Gram Commercial refrigeration, not authorized by the manufacturer
What St. Augustine homeowners say
on the First Coast
“The Gram Commercial walk-in cooler died mid-week and they had it sorted before I'd even rearranged my schedule. The tech explained exactly what went wrong before touching anything.”
“Our Gram Commercial walk-in cooler quit on us and they had a technician out the same afternoon in St. Augustine. No runaround — they told me honestly what it needed and fixed just that.”
“Called about our Gram Commercial walk-in cooler in the morning and it was running again by evening. The diagnostic fee came off the repair total, just like they promised.”
Frequently asked questions
Is there a fee for the diagnostic?
A flat $149 covers the on-site diagnosis and rolls into the repair price. What we quote is what you pay — no add-ons.
How much does a Gram Commercial walk-in cooler that is thermostat issue cost?
Typical costs for a Gram Commercial walk-in cooler that is thermostat issue land between $280–$1,300, parts and labour included. The $149 call-out is applied to the job and the quote is flat — no meter running.
What if the same problem comes back?
Every repair is backed by a 1-year labour warranty and a 6-month parts warranty. If the same issue returns in that window, we come back at no charge.
Do you offer same-day service in St. Augustine?
Yes. We cover St. Augustine daily and offer same-day and emergency service. Booking earlier in the day gives the best chance of an afternoon slot.
Get same-day service in St. Augustine.
Flat-rate pricing, 1 year labour warranty, and fast dispatch.