--- title: "Solar Water Heater Not Working? Causes and Fixes | Qyvea Kenya" url: https://qyvea.co.ke/solar-water-heater-not-working-kenya description: "Solar water heater or solar geyser not working: no hot water, lukewarm water, leaks or low pressure? Common causes and fixes, and solar water heater repair." updated: 2026-10-17 --- > Markdown copy of https://qyvea.co.ke/solar-water-heater-not-working-kenya for AI assistants. Prices and stock change; check the live page. 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Causes and Fixes No hot water, lukewarm water, leaks or low pressure: what usually causes it. The fix is usually simpler than the stress of living with the problem. Read on: it takes a few minutes and could save you a lot more than that. **In this guide you will see:** - No water at all: supply tank, valves, air lock. - Lukewarm: shading, broken tubes, scale or heavy use. - Cold on cloudy days: backup element or thermostat. Quick answer Most solar water heater problems come from water supply (an empty tank, closed valve or air lock), heat loss (broken tubes, damaged insulation or shading), scale build-up from hard water, or a failed backup element, thermostat or controller. Leaks usually come from fittings or the relief valve. [Photo: Andre Taissin / Unsplash](https://unsplash.com/photos/LBPU8K7loz8) Why act on it now ## A fault you ignore is a fault that grows. ### If you wait - Working around the fault for another week - A small problem turning into a replacement - Nobody checking the rest of the system ### What you get - The likely cause found fast, with the checks in this guide - A technician who fixes it properly if the checks do not - A system you can rely on again [Jinko Solar 450W Mono](/products/jinko-solar-450w-mono-perc-solar-panel-102 "Jinko Solar 450W Mono PERC Solar Panel")[Must 6kva solar inverter](/products/must-6kva-solar-inverter-28900 "Must 6kva solar inverter")[200Ah 24V LiFePO4 Lithium](/products/200ah-24v-lifepo4-lithium-battery-pack-413 "200Ah 24V LiFePO4 Lithium Battery Pack") [Get my free quote on WhatsApp](https://wa.me/254113301244?text=Hi%20Qyvea%2C%20I%20read%20your%20guide%3A%20Solar%20Water%20Heater%20Not%20Working%3F%20Causes%20and%20Fixes.%20I%20want%20solar%20and%20backup%20power%20sorted.%20Can%20you%20help%3F)Reply usually within 30 minutes. Free site survey in Nairobi and nearby counties. Real products, live prices, in stock now ## Key takeaways - No water at all: supply tank, valves, air lock. - Lukewarm: shading, broken tubes, scale or heavy use. - Cold on cloudy days: backup element or thermostat. - Dripping relief valve: pressure or temperature too high. - Hard water needs periodic descaling. ## Symptom guide | Symptom | Likely cause | | --- | --- | | No hot water at all | Empty supply tank, closed valve, air lock, failed element | | Lukewarm water | Shading, broken tubes, scale, tank too small | | Hot only in the afternoon | Normal for small tanks; check insulation and usage | | Leaks | Fittings, cracked tube seal or relief valve | | Low pressure | Gravity system with low head, blocked filter | ## Repairs **When to call a professional**: Qyvea services and repairs solar water heaters. Call [0113 301 244](tel:+254113301244) or [WhatsApp us](https://wa.me/254113301244?text=Hi%20Qyvea%2C%20I%27d%20like%20a%20quote%20for%20solar%20water%20heater%20repair). ## Frequently asked questions Why is my solar water heater not heating? Check shading, broken tubes and the water supply first, then the backup element and thermostat. How often should a solar water heater be serviced? A yearly check of valves, insulation, tubes and scale keeps it efficient. ## Why customers choose Qyvea **Genuine brands**: Manufacturer warranty on what we sell, so you are not gambling on the box. **One team, start to finish**: The people who advise you also install and support it. **Fast answers**: WhatsApp replies usually within 30 minutes, and delivery within 24 hours in Nairobi. **Easy to buy**: Pay by M-Pesa, bank transfer or card. Free delivery in Nairobi on orders over KES 5,000. **Risk taken off you**: 7-day returns and exchanges on products, and a workmanship warranty on installations. **Customers say so**: Rated 4.6/5 from 57 Google reviews. **Your next step takes one minute:** send us a photo of the place on WhatsApp and we will tell you what it needs. ## Related articles [Solar & Electrical · Technology Explained How Solar Water Heaters Work Collector, tank and circulation: how sunlight becomes hot water in your shower. 2 min read**READ FULL ARTICLE →**](https://qyvea.co.ke/how-solar-water-heaters-work-kenya)[Solar & Electrical · Guide Solar Water Heater Installation From the roof survey to the first hot shower: how a solar water heater is installed. 2 min read**READ FULL ARTICLE →**](https://qyvea.co.ke/solar-water-heater-installation-kenya)[Solar & Electrical · Technology Explained Solar Water Heater Types Flat plate or evacuated tube, pressurised or gravity: which type suits your home or building. 2 min read**READ FULL ARTICLE →**](https://qyvea.co.ke/solar-water-heater-types-kenya) ### Related services [Solar Water Heaters](https://qyvea.co.ke/solar-water-heater-price-in-kenya)[Maintenance & Repair](https://qyvea.co.ke/maintenance) ### Related products [Browse the Qyvea shop](https://qyvea.co.ke/products) ### Related projects [Real Qyvea case studies](https://qyvea.co.ke/projects#case-studies) [← Previous**Solar Water Heater Installation**](https://qyvea.co.ke/solar-water-heater-installation-kenya)[Next →**: Solar Water Heater Types**](https://qyvea.co.ke/solar-water-heater-types-kenya) ## Still experiencing the problem? Qyvea can inspect and diagnose the system on site. Chat with us — 30 min response --- **Qyvea Limited** · Westlands, Nairobi, Kenya (delivery only, no walk-in pickup) · serving all 47 counties Phone/WhatsApp: [+254 113 301 244](https://wa.me/254113301244) · Email: info@qyvea.co.ke · Shop: [qyvea.co.ke/products](https://qyvea.co.ke/products) · Facts: [qyvea.co.ke/qyvea-facts](https://qyvea.co.ke/qyvea-facts)