--- title: "KoolAire clean light flashing: the water trough did not drain" description: "What Clean light flashing means on KoolAire clean light flashing: the water trough did not drains, what to check before booking, and when it is not a failure at…" url: "https://icemachinerepair.center/error-codes/koolaire-clean-light/" --- # KoolAire clean light flashing: the water trough did not drain On a first start, or a start after the head shut itself off, a KoolAire head dumps its trough through the water dump valve to the drain. ## What Clean light flashing actually means. On a first start, or a start after the head shut itself off, a KoolAire head dumps its trough through the water dump valve to the drain. If the water level does not drop, the board flashes the clean light. A dump valve blocked by scale, a kinked or clogged drain line, or a drain without a proper air gap are the likely reasons. Koolaire ice machine display What to do when Clean light flashing shows on the ice machine ### Kind of code Drain and pump Water that should have left the machine is still inside it. A gravity drain clogged with slime or scale, a line run too flat to keep up during a harvest, a drain pump whose float sticks or whose motor has stopped, or an air gap blocked at the floor sink all back water into the bin or across the floor. Checking that the drain outlet in view runs clear is a fair first step; the pump and the line inside the cabinet are a visit. ### Usually leads to Ice machine drain and pump repair Gravity drains, air gaps, drain pumps and their lines, cleared or replaced when meltwater backs up into the bin or reaches the floor. ### Shows up as Ice Machine Error Code or Flashing Light: What It Is Telling You An ice machine error code may show as a number on a small display, a pattern of blinking lights on the control board, a colored light on the front, or a machine that stops with one indicator flashing. ### Make Koolaire KoolAire ice machine service begins with a look at the air filter, the condenser fins and the water trough. ### Source KoolAire K, KP and KT modular ice machines technician's handbook (Part Number 000018624 Rev 00) KoolAire K, KP and KT heads with the toggle-switch control board, at initial start-up or after an automatic shut-off. ## Before you book, in this order. Each step comes from Koolaire's own guidance for Clean light flashing on its ice machines. Follow it to the end: the last card says whether this is a visit. 01 Check the drain line behind the head for kinks, and look at the floor drain it runs to for a backup. 02 Switch the toggle to OFF and see whether water is standing in the trough. 03 If the trough stays full, book a visit to clean or replace the dump valve; do not open the drain fittings under the head yourself. ### Still there? It usually turns into [ice machine drain and pump repair](https://icemachinerepair.center/services/ice-machine-drain-and-pump-repair/). Book with the code and the model number. ### What not to do The flashing clean light does not mean a cleaning is due; the six-month de-scale is kept by the calendar, not by this light. It also is not a water supply problem, which flashes the two service lights. ## What you may notice with it. The ice machine problems Clean light flashing tends to arrive with. Answer these at the ice machine before anyone is booked. [All problems](https://icemachinerepair.center/problems/) Before you call ### [Ice Machine Error Code or Flashing Light: What It Is Telling You](https://icemachinerepair.center/problems/ice-machine-error-code/) [All 7 causes, cheapest first](https://icemachinerepair.center/problems/ice-machine-error-code/) It also comes with - [**Ice Machine Drain Backing Up Into the Bin**](https://icemachinerepair.center/problems/ice-machine-drain-backing-up/) - [**Ice Machine Leaking Water Across the Floor or Under the Bin**](https://icemachinerepair.center/problems/ice-machine-leaking-water/) - [**Cloudy, Soft or Wet Ice From an Ice Machine**](https://icemachinerepair.center/problems/ice-machine-ice-cloudy-or-soft/) Problem ### Ice Machine Error Code or Flashing Light: What It Is Telling You 7 causes, cheapest first Where Clean light flashing usually leads ## Ice machine drain and pump repair. **Drain line clearing, air gap, drain pump, float and check valve · low to moderate.** Book a visit [What the job involves](https://icemachinerepair.center/services/ice-machine-drain-and-pump-repair/) ## Koolaire ice machines. KoolAire ice machine service begins with a look at the air filter, the condenser fins and the water trough. [Koolaire ice machine repair](https://icemachinerepair.center/brands/koolaire/) More Koolaire codes [SL#1](https://icemachinerepair.center/error-codes/koolaire-sl1/) [SL#2](https://icemachinerepair.center/error-codes/koolaire-sl2/) [SL#1 + SL#2](https://icemachinerepair.center/error-codes/koolaire-sl3/) Drain and pump on other makes [Follett DRAIN CLOG](https://icemachinerepair.center/error-codes/follett-drain-clog/) [Ice-O-Matic Error 4](https://icemachinerepair.center/error-codes/ice-o-matic-error-4/) [Marvel Er16](https://icemachinerepair.center/error-codes/marvel-er16/) [Maxx Ice Buzzer alarm](https://icemachinerepair.center/error-codes/maxx-ice-buzzer-alarm/) [True Residential E25](https://icemachinerepair.center/error-codes/true-e25/) [U-Line Er16](https://icemachinerepair.center/error-codes/u-line-er16/) [Viking Er16](https://icemachinerepair.center/error-codes/viking-er16/) [All 11 codes of this kind](https://icemachinerepair.center/error-codes/#family-drain) Koolaire builds this ### Modular ice machine An ice-making head set on top of a separate storage bin or drink dispenser, cooled by air, water or a condenser on the roof, turning out hundreds of pounds of cubes a day. Koolaire builds this ### Undercounter ice machine A self-contained ice machine that makes and stores its own ice under a bar, a service counter or a kitchen island, from commercial units to clear-ice models in large homes. ## In Koolaire's own words > If the water trough fails to drain after the water dump valve has energized/ de-energized, a clean light will flash. [KoolAire K, KP and KT modular ice machines technician's handbook (Part Number 000018624 Rev 00)](https://www.koolaire.com/asset/?id=xdlalu®ions=us&prefLang=en-US&download=yes) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. KoolAire K, KP and KT heads with the toggle-switch control board, at initial start-up or after an automatic shut-off. ## Koolaire Clean light flashing ice machine 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. 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Check the drain line behind the head for kinks, and look at the floor drain it runs to for a backup. If it comes back, it needs a visit. ### My KoolAire clean light flashes right after I turn it on. Does it need a cleaning cycle? Not necessarily. At start-up that flash reports a trough that did not drain. Check the drain line before starting a cleaning cycle. ### Can a drain that backs up make my KoolAire flash the clean light? Yes. If the floor drain or the head's drain line is blocked, the trough cannot empty, and the board reports it this way. ### Is water on the floor linked to a flashing clean light on a KoolAire? It can be, if a blocked drain overflows. Treat water near outlets as urgent: stay clear, switch the breaker off only from a dry panel and close the supply valve. --- **[Read on the site: KoolAire clean light flashing: the water trough did not drain](https://icemachinerepair.center/error-codes/koolaire-clean-light/)** **[Book a visit with IceMachineRepair.center](https://icemachinerepair.center/schedule/)**