--- title: "U-Line error code P1" description: "U-Line error code P1: The drain pump circuit is open. The maker qualifies it in the same breath — only if the unit has a drain pump — and most." url: "https://ulinemiami.support/error-codes/error-code-p1/" date_modified: "2026-08-30" Appliance type: "Ice machines, Outdoor refrigeration" --- # U-Line error code P1 ### What P1 means, in the maker’s own words The drain pump circuit is open. The maker qualifies it in the same breath — only if the unit has a drain pump — and most U-Line units do not. That qualifier is the whole diagnosis on a machine that has no pump: the number is on the board’s list and cannot apply to your unit. ### Quoted rather than interpreted > P1: Pump Circuit open (Only if unit has drain pump.) From VIEW ERROR LOG, service-mode 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 number actually lives Not on your display. Every U-Line manual that carries a code table says the same sentence: all errors are logged in memory, and only the door error is displayed and has an audible signal. So unless this is a door, you will not see it — it is in an error log reached by holding a hidden key for ten seconds and scrolling to the log option. That is worth knowing before you spend an evening looking for a number the appliance was never going to show you. ### What to do about it - Establish whether this unit has a drain pump at all. An ice machine installed where there is no gravity drain has one; an undercounter refrigerator almost never does. - If it has one, the pump is what removes melt water, so the symptom that arrives with P1 is water — standing in the bin, on the floor under the unit, or backing up. - Check the drain hose before the pump. The maker warns in the installation section that the hose must not be pulled or bent, and a kinked hose behind a built-in unit looks exactly like a failed pump. - Ask for the error log to be read. On this make the numbers live in the control’s service menu — a hidden key held for ten seconds, then option 14 on the older boards and option 21 on the current ones — and the log scrolls the errors in the order they happened. ### Where this goes next The job this usually becomes is [drain pump and drain repair](/services/drain-pump-and-drain-repair/), 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 ice maker error code p1** is searched five different ways and every one of them is about an ice machine, which is where the drain pump is. Only units fitted with a drain pump What this one means What P1 means, in the maker’s own words The drain pump circuit is open. The maker qualifies it in the same breath — only if the unit has a drain pump — and most U-Line units do not. That qualifier is the whole diagnosis on a machine that has no pump: the number is on the board’s list and cannot apply to your unit. Quoted rather than interpreted P1: Pump Circuit open (Only if unit has drain pump.) From VIEW ERROR LOG, service-mode 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 number actually lives Not on your display. Every U-Line manual that carries a code table says the same sentence: all errors are logged in memory, and only the door error is displayed and has an audible signal. So unless this is a door, you will not see it — it is in an error log reached by holding a hidden key for ten seconds and scrolling to the log option. That is worth knowing before you spend an evening looking for a number the appliance was never going to show you. What to do about it Establish whether this unit has a drain pump at all. An ice machine installed where there is no gravity drain has one; an undercounter refrigerator almost never does. If it has one, the pump is what removes melt water, so the symptom that arrives with P1 is water — standing in the bin, on the floor under the unit, or backing up. Check the drain hose before the pump. The maker warns in the installation section that the hose must not be pulled or bent, and a kinked hose behind a built-in unit looks exactly like a failed pump. Ask for the error log to be read. On this make the numbers live in the control’s service menu — a hidden key held for ten seconds, then option 14 on the older boards and option 21 on the current ones — and the log scrolls the errors in the order they happened. Where this goes next The job this usually becomes is drain pump and drain repair, 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 ice maker error code p1 is searched five different ways and every one of them is about an ice machine, which is where the drain pump is. --- **[Read full article: U-Line error code P1](https://ulinemiami.support/error-codes/error-code-p1/)**