Chiller Alarm Diagnosis
Chiller Error Codes
If your chiller shows a code or alarm on the display, this guide tells you what it means and what to do first. Find your code below, try the quick action, and follow the link for full troubleshooting where available. Most genuine faults shut the unit
Chiller Water Flow Alarm (E2)
If your chiller shows E2 or “Water flow malfunction”, it isn’t detecting enough water moving through it. It has shut down to protect the pump. This is the most common alarm, and it’s almost always a quick fix. Quick checks (in this order). Did E2 sta
Chiller Power Alarm (C1)
If your chiller shows C1 followed by a version number (such as U1.4) and then switches off, it isn’t a fault. It’s a normal message that tells you the chiller’s power was cut, for example, by being switched off at the wall, unplugged or due to a powe
Chiller Isn't Cooling
If your chiller is running but the water isn’t getting colder, or it’s taking longer than expected, work through these checks in order. Most of the time, the chiller needs better conditions to cool efficiently, not a repair. First, give it timeChille
Chiller Is Noisy
Every chiller makes some noise while it runs. The compressor hums and the fans whir as they move heat away. This guide helps you tell normal running sound from a noise worth flagging to us. What normal sounds like. A steady hum or whir at around thes
Chiller Is Leaking
Most chiller leaks come from a seal or fitting that needs re-seating, and you can usually fix it in a few minutes. Where is the water coming from?If water is coming from inside the chiller casing (front left or right), switch it off, unplug it and ke
Chiller Sensor Fault
A sensor fault means one of the sensors that monitors temperature or pressure inside your chiller has stopped reading correctly. The chiller switches off to protect itself. It’s a hardware message, not something caused by how you’ve used it. What you
Chiller Isn’t Heating
Some Vital+ chillers can warm your water as well as cool it, which is great for contrast therapy or cooler months. If the water isn’t warming up, the cause is almost always the mode setting, not a fault. To switch modes:. To set your temperature:. On
Chiller Keeps Restarting or Cycling
Ultra X2 and Acrylic: flicking between C1 and a version number (e.g. U1.5)C1 on its own just means the power was cut (see Chiller Power Alarm (C1)). If the display keeps flicking between C1 and the version number, the chiller is losing power as it tr
Tuya App Won't Connect
If your chiller won't pair with the Tuya Smart app, you're not alone. Wi-Fi pairing is fiddly, and it's almost always one of a handful of causes. Work through the checks below in order; the first one fixes it most of the time. The number one cause: 5
Priming Your Chiller
The chiller’s pump must be full of water before it starts. If it runs dry, even briefly, it can trigger the E2/Low Water Flow Alarm, make a grinding or whining noise, or fail to pump at all. Repeated dry starts can damage the pump, and damage caused
Replacing a Blown Fuse
If your chiller won't power on, keeps cutting out, or has intermittent startup issues, a common cause is a blown fuse. The good news is it's quick to check and easy to replace at home, and no technician is required. A short video walkthrough of the s
Unusual Smell from Your Chiller
Most chiller smells are harmless, but one kind needs you to act straight away. Here’s how to tell them apart. Chillers with integrated ozone filtration release small amounts of ozone into the water to help keep it clean. You may notice a light, fresh