--- title: Warning Lights description: Applicable to Chill and Ice Engine Products  Engine and Pump are on, the unit is either at idle state or cooling to target temperature Engine and the pump are off. This is to allow for maintenance tas --- [Skip to content](https://service.brassmonkey.co/knowledge/warning-lights#main-content) English Show submenu for translations ![BrassMonkey_Primary_Logo_Blue-2.png\]](https://service.brassmonkey.co/hs-fs/hubfs/BrassMonkey_Primary_Logo_Blue-2.png?height=40&name=BrassMonkey_Primary_Logo_Blue-2.png) Open main navigation Close main navigation - English Show submenu for translations - - [Go to main site](https://www.brassmonkey.co/) [Go to main site](https://www.brassmonkey.co/) How can we help? - There are no suggestions because the search field is empty. 1. [Knowledge Base](https://service.brassmonkey.co/knowledge?hsLang=en) 2. [COMMERCIAL PRODUCTS](https://service.brassmonkey.co/knowledge/commercial-products?hsLang=en) 3. [General Operation of Commercial Products](https://service.brassmonkey.co/knowledge/commercial-products?hsLang=en#general-operation-of-commercial-products) # Warning Lights ### **Standard Operating Procedures** Applicable to Chill and Ice Engine Products  | LED ON | **Normal Operating** | Engine and Pump are on, the unit is either at idle state or cooling to target temperature | | --- | --- | --- | | LED Flashing *1 flash -1 second gap -1 flash* | **Maintenance Mode** | Engine and the pump are off. This is to allow for maintenance tasks to be completed. The unit will stay in this mode until maintenance mode is re-pressed on the control panel. | | LED Flashing *Quick flash on and off* | **Back Wash Mode** | Engine is off , pump is on. The pump keeps kept on to allow for back washing of filtration | ---   ### **Issue Status ** \**Applicable to chiller engines only. (Pro Chill Plunge and Pro Barrel) * Please contact the support team to confirm what action is required  Brassmonkey.co/support  | LED Flashing *1 flash - 5 Second Gap -1 Flash* | **No Flow ** | Water is unable to flow through the chiller unit | | --- | --- | --- | | LED Flashing *3 flashes - 5 second gap -3 flashes* | **Frost Protection** | The water flowing through bath/barrel is approaching freezing points. Take action to protect your chiller engine. | | LED Flashing *5 flashes -5 second gap -5 flashes* | **Overheat** | Your chiller is overheating. Take action to help cool it down | | LED Flashing *10 flashes -5 second gap -10 flashes* | **Lock Out** | Your chiller has ‘locked - out’ to protect itself |   - [COMMERCIAL PRODUCTS](https://service.brassmonkey.co/knowledge/commercial-products?hsLang=en#main-content) - [Operator Responsibility](https://service.brassmonkey.co/knowledge/commercial-products?hsLang=en#operator-responsibility) - [General Operation of Commercial Products](https://service.brassmonkey.co/knowledge/commercial-products?hsLang=en#general-operation-of-commercial-products) - [Downloadable Resources](https://service.brassmonkey.co/knowledge/commercial-products?hsLang=en#downloadable-resources) - [Product Manuals](https://service.brassmonkey.co/knowledge/commercial-products?hsLang=en#product-manuals) - [Hanna Instruments - Auto Dosing System](https://service.brassmonkey.co/knowledge/commercial-products?hsLang=en#hanna-instruments-auto-dosing-system) - [HOME RANGE](https://service.brassmonkey.co/knowledge/home-range?hsLang=en#main-content) - [The Ice Bath](https://service.brassmonkey.co/knowledge/home-range?hsLang=en#the-ice-bath) - [The Barrel & Chiller](https://service.brassmonkey.co/knowledge/home-range?hsLang=en#the-barrel-chiller) - [PRO RANGE](https://service.brassmonkey.co/knowledge/pro-range?hsLang=en#main-content) - [PRO Range Guidance](https://service.brassmonkey.co/knowledge/pro-range?hsLang=en#pro-range-guidance) - [PRO Plunge](https://service.brassmonkey.co/knowledge/pro-range?hsLang=en#pro-plunge) - [Ice Plunges shipped before March '24](https://service.brassmonkey.co/knowledge/pro-range?hsLang=en#ice-plunges-shipped-before-march-24) - [Downloadable resources](https://service.brassmonkey.co/knowledge/pro-range?hsLang=en#downloadable-resources) - [SPA RANGE](https://service.brassmonkey.co/knowledge/spa-range?hsLang=en#main-content) - [Operator Responsibility](https://service.brassmonkey.co/knowledge/spa-range?hsLang=en#operator-responsibility) - [SPA Range Guidance](https://service.brassmonkey.co/knowledge/spa-range?hsLang=en#spa-range-guidance) - [Resources](https://service.brassmonkey.co/knowledge/spa-range?hsLang=en#resources) - [Brass Monkey App](https://service.brassmonkey.co/knowledge/brass-monkey-app?hsLang=en) - [Apparel](https://service.brassmonkey.co/knowledge/apparel?hsLang=en) [![Chill listening crop-3](https://service.brassmonkey.co/hs-fs/hubfs/BM%20stacked%20black.png?width=100&height=55&name=BM%20stacked%20black.png "Chill listening crop-3")](https://www.brassmonkey.co.uk) Copyright © 2026, Brass Monkey Health Ltd