Cotherm Resource Blog
Interesting articles offering help and insight into past, current and future plumber and heating issues.
Cotherm at your side since 1948
As a leading global company within the heating, ventilation & air conditioning (HVAC) industry, we have the experience, the presence and the resources to make a difference, and that is exactly what we are doing.
Discover the top 10 causes of immersion heater failure in hard water areas, including limescale, element overheating, and poor installation, with expert prevention advice. Cotherm (UK)
Learn how limescale forms in hot water cylinders, how it damages immersion elements, & discover expert tips to prevent damage, improve efficiency, & save energy.
A blog on how to safely test if a hot water cylinders immersion element is faulty or working correctly.
There is also helpful tips on what else could be faulty such as the rod thermostat. Cotherm (UK) Ltd.
No hot water from your hot water cylinder?
This article explains how to correctly test if a plug in Cotherm TSR immersion rod thermostat or a plug in Cotherm TSE immersion rod thermostat is faulty or working.
On a Cotherm thermostat, the terminals are marked A and B to denote the electrical live input and output, respectively, for a simple switch circuit. Specifically, A is the Live (Brown) connection that receives power, and B is the Neutral (Blue) connection that the thermostat switches.
Also... if you are interested in some quirky facts that somehow connect back to thermostats and immersion heaters.
Contact Us
"An orchestra relies on a conductor to prevent chaos. The immersion element provides the energy; the thermostat conducts it, cueing heat exactly when required."
A Success Story
