My Grant Vortex kept losing its pressure overnight. I called in my regular man, who changed the PRV, which initially improved the situation but, it still lost some pressure overnight.
So I called in a Grant ex spurt, who spent hours here wivvit. Turns out it was a blocked hose leading to the PRV, probably a common fault - to those who know.
Reminded me of myself years ago in the car tuning game - eventually yoos get to a stage where you've seen most common faults many times, so your job becomes much easier. It's called experience I do believe :)
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