PulsaCoil Specialists

We are accredited PulsaCoil service engineers in Hammersmith, Chiswick and West London

PulsaCoil Repair and Service Engineers

PulsaCoil thermal store - is an ideal solution for properties with an electrical power supply only.

We can remedy the following issues with your PulsaCoil:

• No hot water coming from a tap
• A Thermal store cylinder is cold
• Hot water is intermittent
• No power coming into the unit
• A dashboard displaying a faulty code

PulsaCoil is a thermal store, rather than hot water cylinders.
Like conventional hot water cylinders, a thermal store is a container filled with hot water but here the similarity ends. Once filled, the water in a thermal store never changes. Instead, the heat stored in it is used to heat the tap water using a heat exchanger. This allows the hot tap water to be delivered at full mains pressure, and is one of the primary benefits of installing a thermal store instead of a conventional hot water cylinder.

Listed below are the various models of PulsaCoil range that we service and istall.

There are many original Pulsacoil Thermal Store Units still in use throughout the UK. These units are often referred to as “punch bags” due to the brown lagging that covers the tank resembling a boxer’s punch bag. These particular appliances are now getting on for 20 years old and in many cases they may be nearing the end of their expected lifespan.

If you have an original Pulsacoil and it is not producing any or only very little hot water then it could be likely that there is a fault with the Immersions heaters.

If the temperature fluctuates or the pressure is reduced then it is could be that the blending valve and heat exchangers are clogged with limescale. If the Pulsacoil is older than 15 years then the copper tank itself or the internal tubing may be corroded.

In many cases it would be time to consider replacing the Pulsacoil with a more efficient hot water system.

The Pulsacoil III was the first PulsaCoil product that incorporated a printed circuit board. The PCB controlled the speed of the pump to ensure that the flow through the external plate heat exchanger produced a constant water temperature at the taps.

The store is heated via the bottom Immersion, usually overnight on an economy tariff.

A top Immersion is supplied as back up or as a boost facility that can be operated during the day.

One of the more common causes of failure on the Pulsacoil III is low water level in the expansion tank. This can easily be resolved by topping up the tank via jugs of water for example and ensuring the lid is securely fastened.

The next generation, Pulsacoil 2000, came in a box rather than a tall cylinder but operated in the same way as the Pulsacoil III. In our opinion the 2000 range was a lot more reliable than earlier models although they utilised many of the same parts as the Pulsacoil III.The 2000 also came with a separate overheat thermostat that would operate as soon as the temperature within the store reached 92 degrees. This, however, proved to be erratic in operation. So a modification kit was produced to remove the overheat thermostat and incorporate it within each of the immersion thermostats.Common faults on this model include:

Low water level in the header tank

The overheat cut out has been activated

Burnt out relay

The Pulsacoil 2000 is fitted with two immersion elements, in our experience these would last approximately 7 to 10 years depending on their use and the hardness of the water. Changing the elements is one of the more expensive jobs due to the system having to be fully drained down to allow for this to be carried out.

The A Class moves away from thermostats fitted within the immersion pockets, it now utilises separate sensors located next to the immersions. The A class also comes with a booster button which eliminates the need for external timers. Additional PCB’s are installed with on board diagnostics which should help identify any faults if they occur. This model seems to be over complicated which may cause technical problems in the future.

Early faults reported include the complete burnout of the two switching relays. This problem was identified by PulsaCoil as a manufacturing fault however they do not issue free replacement parts to rectify this problem.

Replacement parts are still available should they be required.

If you smell burning from you’re A Class itself or from the main breaker/trip switch, please switch off the unit and call MK Group to arrange for assistance from a qualified engineer.

The Pulsacoil A Class is fitted with two Immersion elements, in our experience these would last approximately 7 to 10 years depending on their use and the hardness of the water. Changing the elements is one of the more expensive jobs due to the system having to be fully drained down to allow for this to be carried out.

The newest version to the PulsaCoil has gone back to basics, PulsaCoil have removed all electronic circuitry, It now operates in the same way as the original Pulsacoil with only two Immersion elements and a simple mechanical blending valve, Very little that can go wrong here! The store is heated via the bottom Immersion, usually overnight on an economy tariff. A top Immersion is supplied as back up or as a boost facility that can be operated during the day.

One of the more common causes of failure on the Pulsacoil BP is low water level in the expansion tank. This can easily be resolved by topping up the tank with a jug for example and ensuring the lid is securely fastened.

If you have a Pulsacoil BP and it is not producing any or only very little hot water then it could be likely that there is a fault with the Immersions heaters. If the temperature fluctuates or the pressure is reduced then it is could be that the blending valve is clogged with limescale or damaged.