--- title: "U-Line error code Temp Hi 6H+" description: "U-Line error code Temp Hi 6H+: The zone has been ten degrees over its set point for more than six hours. Which machines can actually raise it, where the number" url: "https://ulinemiami.support/error-codes/error-code-temp-hi-6h/" date_modified: "2026-08-30" Appliance type: "Beverage centers, Undercounter refrigerators, Wine coolers" --- # U-Line error code Temp Hi 6H+ ### What Temp Hi 6H+ means, in the maker’s own words The zone has been ten degrees over its set point for more than six hours. This is not a component failure at all: it is the control saying it has been too warm for long enough to matter to what is inside. On a two-zone cabinet the notification carries (L) or (R) to say which zone it came from; the maker’s own note is that single zone models do not use the left or right indicator at all. Unlike the E numbers on the rest of this make, this one is shown to you: the 3000 Series monitors its inputs continuously and puts the notification on the user interface rather than only into a service log. ### Quoted rather than interpreted > (L) (R) Temp Hi 6H+ — Left or right zone temperature +10 degrees over set point for over 6 hours. Verify door is closed and sealing. From ERROR NOTIFICATION table, 3000 Series User Guide, in a User Guide & Service Manual downloaded from U-Line’s own site. Nothing on this page is decoded beyond what that sentence says. ### Where this notification actually lives On your display, which on this make is the exception rather than the rule. The 3000 Series does not use the E numbers at all: it watches its inputs continuously and writes the notification on the user interface in plain words, so there is no hidden log to open and no key to hold. Every other U-Line in this catalog does the opposite — it logs the number in memory and shows you nothing but the door. If you are reading a phrase rather than a number, this is the series you own. ### What to do about it - Verify the door is closed and sealing — the maker’s own first answer, and on a built-under cabinet a door held a finger’s width open by a bottle or a basket is the commonest cause. - If excessive frost is also noted, inspect the door and gasket for proper seal and alignment. Frost plus a warm cabinet is a sealing problem far more often than a refrigeration one. - Inspect the evaporator fan for proper operation. A cabinet that is cooling but not circulating goes warm at the top and normal at the coil, which is exactly this notification. - Only then the sealed system. The service guide puts it third for a reason: two cheaper causes come first. ### Where this goes next The job this usually becomes is [diagnostic visit](/services/diagnostic-visit/), and every one of those pages carries a starting figure and the reasons that move it. If it turns out to be nothing — and on this make a real share of these are modes rather than problems — the visit ends there and you pay the diagnostic and nothing else, or call [(305) 851-2207](tel:+13058512207) and describe what the display is doing before booking anything. **u line temp hi error** names a notification the 3000 Series puts on the display itself, which is what makes it different from every other number this maker logs. 3000 Series only — this series does not use the E numbers What this one means What Temp Hi 6H+ means, in the maker’s own words The zone has been ten degrees over its set point for more than six hours. This is not a component failure at all: it is the control saying it has been too warm for long enough to matter to what is inside. On a two-zone cabinet the notification carries (L) or (R) to say which zone it came from; the maker’s own note is that single zone models do not use the left or right indicator at all. Unlike the E numbers on the rest of this make, this one is shown to you: the 3000 Series monitors its inputs continuously and puts the notification on the user interface rather than only into a service log. Quoted rather than interpreted (L) (R) Temp Hi 6H+ — Left or right zone temperature +10 degrees over set point for over 6 hours. Verify door is closed and sealing. From ERROR NOTIFICATION table, 3000 Series User Guide, in a User Guide & Service Manual downloaded from U-Line’s own site. Nothing on this page is decoded beyond what that sentence says. Where this notification actually lives On your display, which on this make is the exception rather than the rule. The 3000 Series does not use the E numbers at all: it watches its inputs continuously and writes the notification on the user interface in plain words, so there is no hidden log to open and no key to hold. Every other U-Line in this catalog does the opposite — it logs the number in memory and shows you nothing but the door. If you are reading a phrase rather than a number, this is the series you own. What to do about it Verify the door is closed and sealing — the maker’s own first answer, and on a built-under cabinet a door held a finger’s width open by a bottle or a basket is the commonest cause. If excessive frost is also noted, inspect the door and gasket for proper seal and alignment. Frost plus a warm cabinet is a sealing problem far more often than a refrigeration one. Inspect the evaporator fan for proper operation. A cabinet that is cooling but not circulating goes warm at the top and normal at the coil, which is exactly this notification. Only then the sealed system. The service guide puts it third for a reason: two cheaper causes come first. Where this goes next The job this usually becomes is diagnostic visit, and every one of those pages carries a starting figure and the reasons that move it. If it turns out to be nothing — and on this make a real share of these are modes rather than problems — the visit ends there and you pay the diagnostic and nothing else, or call [(305) 851-2207](tel:+13058512207) and describe what the display is doing before booking anything. u line temp hi error names a notification the 3000 Series puts on the display itself, which is what makes it different from every other number this maker logs. --- **[Read full article: U-Line error code Temp Hi 6H+](https://ulinemiami.support/error-codes/error-code-temp-hi-6h/)**