Hello guys,
Recently my boiler failed to work and I noticed the pressure was below 0.5 bar on the gauge. After repressure to 1.5 bars, I can see the pressure drop slowly over time, roughly 0.5 bar dropped in 2 days or so.
I checked all the pipes and radiators, no visible leakage seen.
The PRV pipe outside was not discharging any water, this was confirmed by sticking a paper cup on the pipe outside - it stayed dry.
No visible drips on the drain pipe and the PRV in the boiler.
Trying to isolate the problem, I repressured the boiler back to 1.5 bars, then shut the isolation valves on both CH pipes. Still, the pressure went down as before.
Could it be an internal leak? I could not see any damp spots or drips of water around the boiler. Or other problems?
Other information:
I am about to call someone over but I think it is best to ask for your expert advices first
Thanks very much!
Recently my boiler failed to work and I noticed the pressure was below 0.5 bar on the gauge. After repressure to 1.5 bars, I can see the pressure drop slowly over time, roughly 0.5 bar dropped in 2 days or so.
I checked all the pipes and radiators, no visible leakage seen.
The PRV pipe outside was not discharging any water, this was confirmed by sticking a paper cup on the pipe outside - it stayed dry.
No visible drips on the drain pipe and the PRV in the boiler.
Trying to isolate the problem, I repressured the boiler back to 1.5 bars, then shut the isolation valves on both CH pipes. Still, the pressure went down as before.
Could it be an internal leak? I could not see any damp spots or drips of water around the boiler. Or other problems?
Other information:
- I justed moved into this flat (built in 1987), the boiler was installed in 2004 and last serviced in 2009
- I started to use the radiators (4 hours/day) from 19th Oct, the 0.5 bar low pressure problem was first noticed on 24 Oct.
I am about to call someone over but I think it is best to ask for your expert advices first
Thanks very much!
