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PulsaCoil Stainless Common Faults

PulsaCoil Stainless Common Faults

The Pulsacoil Stainless from Gledhill is the third generation of Pulsacoils with a stainless steel internal tank; the first generation also went by the confusing name of “Pulsacoil Stainless.” The thermal store water containers inside of any model without the word “stainless” is manufactured from copper, which is much more prone to pinhole leaks.

The new “Pulsacoil Stainless” model looks entirely different from the old “Pulsacoil Stainless.” All of the susceptible components (pump, circuit board, and heat exchanger) on the old one are nicely contained and protected inside a rectangular steel container on the old one. Although it has a big plastic cover, the new Pulsacoil Stainless is a round cylinder with a pump, circuit board, and heat exchanger attached to the outside. In my opinion, this makes it more vulnerable to damage and impact. It resembles the Pulsacoil Stainless ECO topographically, but it has a flow restrictor after the mains water entry strainer and a check valve in the return pipe from the plate heat exchanger. To possibly cut down on manufacturing costs, every component is set up differently.

PulsaCoil Stainless Common Faults

As this is a brand-new model that was only released in January 2020, if you already have one, it should still be covered by warranty. But after carefully reviewing the instructions and studying the diagrams and part lists, these are the faults and breakdowns we believe they will experience:

PulsaCoil Stainless Immersion Element
Although they rarely truly break and stop heating, the immersion heater elements in the majority of earlier Pulsacoil versions leak. The overheat protection thermostat trips or blows fuses as a result of the thermostat pocket corroding through and allowing water to leak into the wiring connections and occasionally into the thermostat itself.
PulsaCoil Stainless Failed Thermostats
The immersion element thermostats malfunction in a number of different ways. They can be damaged by water ingress when the pocket encasing it leaks, the integrated overheat protection built-in can occasionally randomly trip, needing resetting, or the overheating thermostat can trip when the unit has overheated. They can also lose their calibration and turn OFF at too low or too high a temperature.
PulsaCoil Stainless Scaled Heat Exchanger
The amount of water (flow rate) from the taps decreases until it is just a trickle while simultaneously emerging cool. This occurs when scale builds up inside the plate exchanger. Chemical methods can be used to get rid of the scale, but they take time and cost money. The most cost-effective solution is to install a new heat exchanger.

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