Gledhill Pulsacoil 3 Repairs Are What We Do.
If the you require our services, please call 0800 046 1241. Below is more information Gledhill Pulsacoil 3 repairs.
Pulsacoil FAQ’s – Further information about all Pulsacoils
Pulsacoil Repair – Overall information on our service
Pulsacoil 3 – Information on Gledhill Pulsacoil 3
Pulsacoil 3 Manual – Official Gledhill Pulsacoil 3 manual
Pulsacoil 3 Repair – Tips on Gledhill Pulsacoil 3 repairs
Gledhill Pulsacoil 3 Spares
Pulsacoil BP – Information on replacement system for Gledhill Pulsacoil 3
Infomation On Gledhill Pulsacoil 3 Repairs
Gledhill PulsaCoil 3 systems are thermal stores. Unlike 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.
The Gledhill PulsaCoil 3 transfers heat into the tap water using a pump and an external ‘plate heat exchanger’. A plate heat exchanger is a block of very thin stainless steel plates arranged so that cold mains water can flow through one set of spaces between the plates, and hot water from the thermal store core can flow through an alternate spaces. Heat transfers through the plates and heats the cold mains water on it’s way to the hot tap.
We highly recommend you do not use anyone who is not experienced in carrying out Gledhill Pulsacoil 3 repairs.
So before you get your Gledhill Pulsacoil 3 repairs carried out, read this page and request our mini guide.
How does the Gledhill PulsaCoil 3 work?
An immersion heater heats the water inside the Gledhill Pulsacoil 3 thermal store. A flow switch detects when a hot tap has been turned on and tells the circuit board, which runs the pump. The pump circulates stored hot water through the plate heat exchanger, heating it, and the circuit board modulates the pump speed to maintain output temperature using two thermistor temperature sensors. The output temperature to the hot taps is regulated by a thermostatic blender valve on the outlet of the domestic heat exchanger which adds in some cold water if necessary. The blender valve output temperature can adjusted by the user.
Gledhill PulsaCoil 3 faults:
Gledhill Pulsacoil 3 Repairs Info #1) Depleted water.
Gledhill PulsaCoil 3 has a top-up cistern attached to the top. This may or may not have a float valve connected to the mains water supply to fill it. (When there is NO mains connection, there is usually provision for manual filling by the user by means of a tap on the wall nearby.) Water is continually lost from the thermal store through evaporation and/or leaks, and when there is no float valve to top it up, the user needs to do it manually from time to time. Low water level in the cistern at the top will prevent the Gledhill PulsaCoil 3 from working because there is a float switch in the cistern that turns the unit off when the depth of water in it falls to about three inches or less. The power supply to the immersion heaters is turned off and the green “Water Level” indicator light on the front panel will have gone out, and the unit will fail to heat (the LED indicator may become faulty, in this case you can visually inspect the system). The answer is to check the water level in the top-up cistern and top it up to the waterline embossed into the wall of the cistern.
We would recommend you request our self check Pulsacoil mini guide by completing our web form on the side bar. You may not need a Gledhill Pulsacoil 3 engineer to carry out your Gledhill Pulsacoil 3 repairs if this step is followed correctly.
Gledhill Pulsacoil 3 Repairs Info #2) Thermistor failure.
The heat sensors in a Gledhill Pulsacoil 3 system can become unreliable with age. This usually presents as unpredictable hot water performance or unstable hot water temperature. The thermal store inside the Gledhill Pulsacoil 3 will be hot, but the pump will not run fast enough (or may not run at all when the hot water tap is opened. The circuit board may be reporting thermistor failure via it’s red LED. One flash per second indicates flow thermistor failure, seven flashes per second indicates the pumped return thermistor has failed. Two flashes per second means the circuit board thinks both thermistors are good, but this is not always true in my experience, and changing both apparently good thermistors on a unit behaving inconsistently can often cure the problem. Also the Gledhill Pulsacoil 3 take between 25-45 seconds to stabilise with hot water flow. If you experience this, do not call an engineer out to carry out your Gledhill Pulsacoil 3 repairs as this is how the system normally functions.
In some cases the sensors inside the Gledhill Pulsacoil 3 system may not have failed. They may be covered in dust or calcium, reducing the detecting ability.
Gledhill Pulsacoil 3 Repairs Info #3) Circuit board failure.
No flashes on the circuit board LED means circuit board failure, usually. If there is 230v across the live and neutral terminals on the board yet no LED flashing, then board failure is virtually certain. Also if the LED is permanently on, this could also mean the PCB board has failed.
Gledhill Pulsacoil 3 Repairs Info #4) Immersion heater element failure.
The unit fails to heat up. Easily diagnosed by measuring the resistance of the heater element. A good element will read fine, we also recommend that a voltage test be carried across the element to establish leakage.
Gledhill Pulsacoil 3 Repairs Info #5) Immersion heater leaking.
Older ‘Shel’ brand immersion elements fitted inside the Gledhil Pulsacoil 3 system seem to suffer from leaks in the thermostat sensor pocket, this is due to the element itself being incoloy and the pocket being copper. On many occasions we’ve seen water emerging from the copper tube in which the thermostat sensor is housed. This is clearly dangerous as it introduces water into the electrical connection box on the heater element head, and it often results in thermostat failure. Do not use anyone to carry out your Gledhill Pulsacoil 3 Repairs if they claim they can repair the element, the only repair you can do in this situation is replace the element.
Ensure the element you replace is an incoloy element and that the thermostat road provided is the correct one which can reach 73ºC.
Gledhill Pulsacoil 3 Repairs Info #6) Thermostatic blender valve failure.
The thermostatic blender valve is susceptible to contamination by water scale in hard water areas. There is a component inside which breaks and the blender valve delivers just luke-warm water to the taps. A new blender valve cures the problem. Attempts have been made by engineers when carrying out Pulsacoil 3 repairs to clean this which have been unsuccessful, we would recommend just replace them.
Gledhill Pulsacoil 3 Repairs Info #7) Water scale-contaminated plate heat exchanger.
The plate heat exchanger in a Gledhill Pulsacoil 3 is prone in some areas to water scaling. This presents as maximum water temperature becoming progressively lower, and in the final stages of scaling, the flow rate from the taps reducing too. The fix is to either fit a new plate heat exchanger, or to de-scale the existing heat exchanger using conventional de-scaling techniques. This needs to be done correctly by the person doing your Pulsacoil 3 repairs, also it can take longer to do and the labour rate could exceed the price of a new plated heat exchanger.
Gledhill Pulsacoil 3 Repairs Info #8) External Economy 7 time clock failure.
Gledhill PulsaCoil 3 systems are usually connected to an Economy Seven tariff electricity supply. When there is no separate off-peak power supply to the unit an Economy Seven timer will have been fitted. These seem to fail after a few years and no longer deliver power to the immersion heaters, even when the indicator lights on the timer say power is being delivered.
Before calling any engineer to carry out your Pulsacoil 3 repairs, request our self check Pulsacoil mini guide which has help many tenants, landlords and estate agents.
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