Pulsacoil 2000, 5 secs hot water, 5 secs cold water then in a constant loop?

Hello,

I know there are similar posts here but they havent helped me....

I have recently just moved into my first flat which is exciting ( which has been empty for about a yeai think). I live in Gateshead (NE11, Next to Newcastle-Upon-Tyne), i dont think we have hard water up here..?

When i turn on the hot water i get about 5 seconds of hot water, then it goes cold for about 5 seconds, then hot,cold,hot,cold etc.

All 3 mains boiler switches are on, on the front of the panel the GREEN power LED is ON, the RED fault LED is OFF, however when i take the front panel off, on the circuit board to the top right, there is a RED LED which is flashing, from memory i thinkg its labeld H1?

Even if i use the boost button, i still get the same problem.

Any help would be much appreciated, no way i can affored £260 for an engineer to come out

I have managed to fix it myself.

I rang the gled hill technical support line, and they were almost certain it was the water sensor to the hot tap supply, its the top sensor which has a brass screw into the pipe.

I removed the sensor, and it looked dull and dirty, so i gently cleaned it using an abrasive pad, until it was shiny again, re-attached it and i have hot water again

Steps:
1. Switch power to unit off
2. Switch of water mains (Stop cock)
3. Remove the brass sensor
4. Clean sensor head
5. Re-attach sensor
6. Switch power to unit back on
7. Turn water mains back on

Hope this helps anybody else.

Thank you for sharing that. Please also remember to keep your header tank topped up.