--- product_id: 8390229 title: "599388 24 Hour Programmable Timer for UP Circulator Pumps" brand: "grundfos" price: "€ 220.43" currency: EUR in_stock: true reviews_count: 8 category: "Grundfos" url: https://www.desertcart.at/products/8390229-599388-24-hour-programmable-timer-for-up-circulator-pumps store_origin: AT region: Austria --- # 115-120V AC power 15-min switching intervals -4°F to 175°F ambient range 599388 24 Hour Programmable Timer for UP Circulator Pumps **Brand:** grundfos **Price:** € 220.43 **Availability:** ✅ In Stock ## Summary > ⏰ Power your pump with precision and never miss a beat! ## Quick Answers - **What is this?** 599388 24 Hour Programmable Timer for UP Circulator Pumps by grundfos - **How much does it cost?** € 220.43 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/8390229-599388-24-hour-programmable-timer-for-up-circulator-pumps) ## Best For - grundfos enthusiasts ## Why This Product - Trusted grundfos brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact & Lightweight:** At just 4.7 ounces, it fits seamlessly into any setup without bulk. - • **Flexible Switch Modes:** Choose Timer, ON Override, or OFF Override to suit your workflow. - • **Precision 24-Hour Control:** Program your pump with 15-minute accuracy for ultimate efficiency. - • **Wide Temperature Tolerance:** Operates flawlessly from freezing cold to scorching heat (-4°F to 175°F). - • **Robust 16-Amp Contact Rating:** Handles high loads effortlessly, ensuring reliable pump operation. ## Overview The Grundfos 599388 is a 24-hour programmable timer designed for UP circulator pumps, delivering precise 15-minute interval control, a durable 16-amp contact rating, and reliable operation across a broad temperature range (-4°F to 175°F). Compact and versatile, it offers multiple switch modes including Timer, ON Override, and OFF Override, making it an essential upgrade for efficient pump management. ## Description Product Description Grundfos 599388 24 Hour Programmable Timer for UP Circulator Pumps From the Manufacturer Grundfos 599388 Timer is designed only for use with specified Grundfos Series UP circulators installed in indoor hot water service systems. Applicable Series UP models include all single speed UP 10-15, 1-phase, 115-Volt, 60-hertz pumps with date codes of 0528 and higher.The Grundfos Timer control is designed to turn the circulator on and off at preset times, allowing the user to select operation of the circulator during high use periods of the day. Review: Great timer - Easy to follow instructions, works great, solved the cold water sandwich in the tankless water heater. Programmable in 15 minute intervals. Review: Easy to install - This was easy to install, just keep in mind that it is only a switch. It fits exactly on the box after you remove the cover. The instructions were easy to follow and it works just fine. ## Features - Supply Voltage: 115-120V AC, 60-hertz - Contact Rating: 16-amp - Ambient Temperature: -4F to 175F - Shortest Switching Interval: 15 minute increment - Switch Modes:"Timer", "ON" Override, "OFF" Override ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | Grundfos | | Part Number | 599388 | | Item Weight | 4.7 ounces | | Package Dimensions | 10.87 x 7.32 x 3.7 inches | | Item model number | 599388 | | Is Discontinued By Manufacturer | No | | Color | --- | | Power Source | Battery Powered | | Item Package Quantity | 1 | | Included Components | 599388 | | Batteries Included? | No | | Batteries Required? | No | ## Images ![599388 24 Hour Programmable Timer for UP Circulator Pumps - Image 1](https://m.media-amazon.com/images/I/714QyNVv0hL.jpg) ## Questions & Answers **Q: How to program Grundfos 599388 timer?** A: Once the Timer has been installed, the programming is as follow: With a finger-nail push the little blue pecks toward the outside for the time you want the pump to be ON. The Timer select switch should be in the "Timer" position (center) for the Timer to be in control. We have the timer set for ON from 05:00am to 10:00am and 04:00pm to 08:00pm, and also On for 15min every hour in the afternoon, to have warm water ready. **Q: Will this timer work with the grundfos up15-18b5 (59896114)?** A: Yes this should work. I use it with a UP15-42F and it works fine so it should work with your model. **Q: Can I just use an ordinary timer switch at the outlet instead of this?** A: Yes. It's not quite as clean of an installation, but you could do as you suggest. Also, consider adding the thermostat option as well as the timer. There is no reason to continue running the pump if the water in the pipes is already hot and stable. The timer and temp sensor are a good combination. **Q: Will this work with up15-10 b5? i'm not sure what the phrase "works with date codes of 0528 and higher" means. my unit says pc: 0451. thanks** A: If your pump has the plastic cast body electrical entry the 599388 should work. If you have the sheet metal type mount cover you'll need a 505474, I think you'll have to get a cord. I just can't remember the date code deal. You'll see the difference........ ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great timer *by G***R on March 15, 2017* Easy to follow instructions, works great, solved the cold water sandwich in the tankless water heater. Programmable in 15 minute intervals. ### ⭐⭐⭐⭐⭐ Easy to install *by J***D on May 18, 2022* This was easy to install, just keep in mind that it is only a switch. It fits exactly on the box after you remove the cover. The instructions were easy to follow and it works just fine. ### ⭐⭐⭐⭐⭐ works perfect *by F***K on August 22, 2024* works perfect! ## Frequently Bought Together - Grundfos 599388 - Grundfos UP15-18B5 (59896114) Pump, 1/2" Sweat End Open System Circulator, 1/25 HP 115V - Bronze - Grundfos 595656 Aquastat Control, Black --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.at/products/8390229-599388-24-hour-programmable-timer-for-up-circulator-pumps](https://www.desertcart.at/products/8390229-599388-24-hour-programmable-timer-for-up-circulator-pumps) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-06-05*