What causes a vokera Linea 28 error code 04?

Its a temperature sensor that has gone wrong…. a teeny little thing. It’s usually the flow switch as you say. The pump runs for about 30s and if the microswitch hasn’t made you get error 04. Could be muck, sticking, or a worn diaphragm.

When does a vokera boiler have a fault code?

When your Vokera boiler has a problem, it will lock out and display a relevant fault code. This fault code is designed to give a Gas Safe engineer an indication of the problem. In the case of the A01 fault code, there has been an ignition problem.

How old is the vokera Linea 28 boiler?

I have a Vokera Linea 28 boiler installed by a Corgi engineer in 1999 and regularly serviced. There has been an ongoing problem since it was about 18 months old which is becoming steadily worse and more frequent. Several attempts to rectify on numerous occasions by 3 different Corgi engineers have all been unsuccessful.

Why is my Linea boiler showing code 04?

Basically the boiler locks out showing code 04. This tends to occur when the heating system is cold and we try to turn on the heating or run hot water. In the winter it can occur daily. Over the past year or so it is becoming increasingly difficult to reset.

What does vokera Linea fault code 40 / 41 mean?

Vokera Linea fault code 40/41 (Vokera Compact code A04) The Fault: The codes above mean your boiler’s pressure levels are low. Sometimes this can happen if there’s a leak, or if an air bubble has found its way into the system. The Fix: Locate the filling loop underneath your boiler and top up the pressure to 1 – 1.5 bar.

What’s the pressure on a vokera Linea 28?

Over the years, various Corgi engineers (some from a company recommended by Vokera) have been unable to eradicate the problem despite “recharging the expansion tank, cleaning the fan venturis, replacing the pump flow stuffing box, the selector knob and the dhw heat exchanger”. The pressure guage reads about 1.8 when cold and up to 2.4 when hot.