

True HIGH TEMP alert: the freezer has warmed past its alarm limit
True lists HIGH TEMP among the notification alerts on its column display.
Mon–Sat, 8am–8pm
- Temperature and alarms
- Freezer thermostat and temperature control repair
- Source: True Residential
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What HIGH TEMP
actually means.
True lists HIGH TEMP among the notification alerts on its column display. On the undercounter freezers and freezer drawers, True spells out the limit: the alarm activates after one hour in a row at or above 20°F, once the alarms have been switched on.
True Residential freezer display · also shown as High temperature alarm
What to do when HIGH TEMP shows on the freezerKind of codeTemperature and alarms
The freezer measured a cabinet warmer than it should be and said so, sometimes with the highest temperature it reached while nobody was looking. The cause can be as simple as a door left ajar or a long power outage, or as serious as a compressor that stopped. Keep the door or the lid shut and check whether the food is still hard before anything else; the alarm is a warning about the food, not a diagnosis.
Usually leads toFreezer thermostat and temperature control repair
Repairing the dial thermostat or the sensor and control that decide when a freezer cools, so it stops running without end or quitting too early.
Shows up asFreezer Error Code
A freezer error code appears on the display: letters and digits, a flashing temperature, or a warning symbol, sometimes with an alarm and sometimes with the freezer still running.
MakeTrue Residential
True freezers repaired in homes, home bars and outdoor kitchens.
SourceTrue Residential column installation and operation manual, TR-24/30/36 (TEC_TM_009 Rev N)
True freezer columns (TR-24FRZ, TR-30FRZ, TR-36FRZ, with or without ice maker) with the menu display, and True 24-inch undercounter freezers and freezer drawers (TUF-24, TUF-24D). On the undercounter models the door ajar and high temperature alarms are turned on together from the keypad.
Before you book,
in this order.
Each step comes from True Residential's own guidance for HIGH TEMP on its freezers. Follow it to the end: the last card says whether this is a visit.
Check the food by hand and move anything soft to another freezer or a cooler with ice.
Close the door or drawer firmly and make sure the gasket seals; a door ajar alarm often comes first.
If HIGH TEMP returns with the door shut and no warm food loaded, book a visit.
Still there?
It usually turns into freezer thermostat and temperature control repair. Book with the code and the model number.
What not to do
HIGH TEMP is not a sensor or control code; True shows COMMUNICATION ERROR and SERVICE REQUIRED as separate alerts. It also does not mean the food is lost, since 20°F is still below freezing.
What you may
notice with it.
The freezer problems HIGH TEMP tends to arrive with. Answer these at the freezer before anyone is booked.
All problemsWhere HIGH TEMP usually leads
Freezer thermostat and temperature control repair.
True Residential
freezers.
True freezers repaired in homes, home bars and outdoor kitchens.
True Residential freezer repairMore True Residential codes
Temperature and alarms on other makes
Freezer column
A built-in, full-height freezer that stands alone in the cabinetry, often beside a matching fresh-food column, with a stainless or panel-ready door and an electronic control.
Undercounter freezer
A 15- to 24-inch freezer or a pair of freezer drawers built in under a counter, in a kitchen island, a home bar, a basement or a pool house, venting from the front.
In True Residential's own words
The following notification alerts may show on the display if the appliance needs attention.
Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. True freezer columns (TR-24FRZ, TR-30FRZ, TR-36FRZ, with or without ice maker) with the menu display, and True 24-inch undercounter freezers and freezer drawers (TUF-24, TUF-24D). On the undercounter models the door ajar and high temperature alarms are turned on together from the keypad.
True Residential HIGH TEMP freezer repair,
where we come out.
The same visit in every metro below: the code, the model number, and a diagnosis before any part is ordered.
All service areasTampa BayFL · 31 areas
Miami / South FloridaFL · 47 areas
New York MetroNY · 75 areas
HoustonTX · 36 areas
ChicagoIL · 50 areas
Los AngelesCA · 95 areas
San DiegoCA · 31 areas
Questions
about HIGH TEMP.
Can I clear HIGH TEMP myself?
At what temperature does a True undercounter freezer alarm?
Can a True outdoor undercounter freezer show HIGH TEMP in summer heat?
Why didn’t my True freezer warn me it was warm?
Back to your everyday
Still showing HIGH TEMP?
Book with the code or the alarm pattern written exactly as the freezer shows it, the full model number, and whether the food is still frozen hard — when there is a code, that is where the diagnosis starts.