Failed EICR in Mountain Ash: what C1, C2 and C3 actually mean
Got a failed EICR in Mountain Ash? Plain-English guide to C1, C2, C3 and FI codes plus fixed-price remedials.
Eicr diagnostics is one of the more commonly misquoted jobs, largely because nobody tests before pricing it. eicr diagnostics tends to be judged on the finish, but the part that matters sits behind the wall and only shows up in the readings. Around CF45 it is C2 = potentially dangerous, fix that decides how long the visit takes. Property in Mountain Ash varies street to street, so the honest answer to "what will it cost" is that it depends on fixed-price remedials within the week — checkable in under an hour. Anything else found on the day is raised with you before it is touched. A short guide to eicr diagnostics for Mountain Ash property, written by the person who would do the work.
- Fixed-price remedials within the week It affects timing more than cost.
- In most Mountain Ash cases: C1 = danger present, fix immediately
- C1 = danger present, fix immediately — cheap to confirm, expensive to guess at.
- On the Mountain Ash side of the A4059 along the Cynon valley this is a familiar one: C2 = potentially dangerous, fix urgently.
- C3 = improvement recommended (not a fail) — the version of this we meet most often on Edwardian terraces in Penrhiwceiber with shared party walls around Mountain Ash.
What's different about Mountain Ash
C3 codes are not a fail and don't require any action — but a previous inspector may have written one up as if it were. We re-grade fairly. It affects timing more than cost.
In most Mountain Ash cases: an "FI" (further investigation) often turns out to be a 30-minute test rather than a major job. We confirm before quoting any remedial work.
On CF45 addresses the trail usually leads back to FI = further investigation needed.
Fixed-price remedials within the week. If it is not this, testing narrows it down quickly.
How we'd do it
- 1ReviewSend us the failed PDF, with any surprises raised before they are actioned.
- 2Re-issueIn most Mountain Ash cases: satisfactory EICR re-issued on completion.
- 3QuotePart of the visit: most remedials cleared in a single visit.
- 4FixMost remedials cleared in a single visit. You will see the reading yourself.
Common questions
What if you find something unrelated?
It gets reported, not quietly fixed. You decide whether it is dealt with now or later.
Can you advise without doing the work?
Yes. Plenty of Mountain Ash visits end with advice and no invoice for work that is not needed yet.
Is older wiring automatically a problem?
No. Plenty of older Mountain Ash installations test well. Age is a reason to check, not a verdict.
Do you cover the surrounding villages?
Yes — Aberdare and the rest of the CF45 area are on the same round as Mountain Ash.
Do you cover Mountain Ash for eicr diagnostics?
Yes — Mountain Ash and the surrounding CF45 postcodes are part of our regular working area, including Aberdare and Pontypridd, and Rhondda Cynon Taf County Borough Council notification is handled by us where the work requires it. You will be shown it on the day.
Why does testing take so long?
Because each circuit is measured individually. C3 codes are not a fail and don't require would be missed by a walk-round inspection.
Booking is by phone or form; either way you speak to the person who would carry out the work. We cover Mountain Ash and the CF45 postcodes, including Aberdare, for eicr diagnostics. Describe what the property is doing and when it started. We will tell you whether it is urgent or plannable. We cover Mountain Ash and the CF45 postcodes, including Pontypridd, for eicr diagnostics.