We have a Vokera Vision 30c boiler (5 years old). The boiler was showing error code A04. A vokera engineer came and changed a faulty pressure gauge, but didn't find any other faults.
Since then, the boiler goes off to 0 pressure when switched off for long (example, overnight). However, even if I don't top it off, it still comes on when heating is switched on and heats the radiators. even when the pressure dial shows 0. The Vokera engineer asked me to find leaking radiators. I found one and got it fixed. However, the boiler still goes off to 0 pressure when switched off for long. Once or twice, I have tried re-pressurizing using the filling loop up to 1 bar. It stays at 1 bar if the heatings is frequently on, but goes off to 0 as soon as it is off for long. The heating still works when the pressure dial shows 0.
The copper pipe outside shows no water droplets but the plastic pipe throws out a steady trickle of water.
I am not sure what the problem is as the heating working even when the pressure dial shows 0. I am also scared of re-pressurizing often as I am not sure if the boiler pressure is actually correct (and hence it works even at 0) and me re-pressurizing might lead to problems.
Since then, the boiler goes off to 0 pressure when switched off for long (example, overnight). However, even if I don't top it off, it still comes on when heating is switched on and heats the radiators. even when the pressure dial shows 0. The Vokera engineer asked me to find leaking radiators. I found one and got it fixed. However, the boiler still goes off to 0 pressure when switched off for long. Once or twice, I have tried re-pressurizing using the filling loop up to 1 bar. It stays at 1 bar if the heatings is frequently on, but goes off to 0 as soon as it is off for long. The heating still works when the pressure dial shows 0.
The copper pipe outside shows no water droplets but the plastic pipe throws out a steady trickle of water.
I am not sure what the problem is as the heating working even when the pressure dial shows 0. I am also scared of re-pressurizing often as I am not sure if the boiler pressure is actually correct (and hence it works even at 0) and me re-pressurizing might lead to problems.
