fault

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  1. littlespark

    Fault finding head scratcher.

    Quick drop in at a house on way home…. Customer couldn’t reset mcb for rfc. Power off at board, outgoing cables disconnected… I was getting 200V between the neutral bar and the earth bar within the CU. With the CU mainswitch on, I am getting a voltage on the disconnected live cables. Have...
  2. R

    UK Inverter over grid voltage fault

    I have a Solis 3.6 KW inverter which works well until it exceeds about 2000W when it shows "over grid voltage" and shuts down. This does not happen if something is switched on in the house which draws a large amount of current such as the immersion heater. I have a voltage meter in the house...
  3. S

    Boiler Fault

    I’m hoping someone can help with this boiler problem. Couple have just moved into a house that has a Grant Vortex combi boiler. The current setup is a two channel programmer, turn the heating on at programmer & it calls for heat at stat that then returns to CH terminal inside boiler. Hot water...
  4. Sven666

    UK Inspection - Basic fault coding questions

    I have to re-sit 2391 photo coding assessment (having passed the rest), and have a couple of simple scenarios I was unsure about last time. (I know I will get different photos this time). I'm curious how everyone asses these: The task is to identify all faults (if any), likely outcome, and code...
  5. wsoppitt

    Rcd fault

    Hello guys and girls , I have a question if I may. Have to go and look at a intermittent fault on rcd , I'm told the circuit holds whilst using light appliances ( TV, etc ) but randomly trips the rcd on heavier loads ( hair dryer ) . The manual operation of the test button also doesn't work...
  6. K

    IEC 61439-1 - Relationship between prospective fault current and diameter of copper wire

    Hi, I am currently reading through the standard IEC 61439-1 - Low-voltage swtichgear and controlgear assemblies - Part 1: General rules, and on Table 14 it is stated the "Relationship between prospective fault current and diameter of copper wire" (see picture attached). I don't understand why...
  7. O

    Strange fault we had yesterday

    I sorted the fault fairly quickly as it happens but only because I'd come across it once before and at the time a few people said it couldn't possibly happen they way I described it, but its happened twice now. Both jobs done by us, full re-wires. The first time was during the 16th edition...
  8. LaidBackNinja

    New light fitting fault

    Morning Needing help regarding Ansell AARDRINA/DD1/SM3. I’ve installed 6 in one room, one being an emergency light fitting. All 5 standard fittings work fine. The green led flashes on the emergency fitting and when switched on the main light flashes on and off twice then stays off. Any advice...
  9. P

    Hotpoint oven fault

    Intermittent fault with a Hotpoint oven .Sometimes comes up to temperature,more often now,it doesn't.Other functions work fine,grill etc.Any thoughts?
  10. P

    Built in oven intermittent fault

    Hi there.We have a Hotpoint electric oven that has started to go wrong.It has a digital display for setting functions,but over the last few months,when we turn the oven on,normally the fan comes on quite strong ,the digital display shows red bars as the heat builds to it required temp.What is...
  11. B

    UK Odd Electrical Fault in bathroom between taps and tiled wall

    Hi there, I’m a new member to the forum and felt like I could do with some additional insight into a fault I came across on a call-out at the weekend. I was called to attend a domestic property where the tenant had mentioned getting a shock when touching a tiled wall and the bath taps. On...
  12. A

    Help needed again pls - Lighting fault tracing

    I need your help please once again in tracing a fault. Am DIY but not clueless. Converting former kitchen into 2 rooms: bathroom and laundry. The room had 24 cheapo ceiling spots, originally tungsten then 240v GU10 LEDs that I am replacing. Circuit spilt into two halves with two gang wall...
  13. ThatCompexDude

    PME fault after moving charger to 3TP board

    Evening all, I have a little conundrum I need to get resolved. I’ve moved an EV charger from a single phase board that was on a 40a breaker and no RCD protection, over to a different 3TP board, on a new 40a Type A RCBO (Single phase) The customer is now reporting that the charger has a PME...
  14. D

    Breaker keeps tripping, potential ground fault?

    Hi all. We have a 120v 20 amp circuit to an accessory dwelling with a run of about 75' of direct bury #12. The breaker keeps tripping even when there is nothing connected to the circuit. What I've done so far: Checked all connections in the circuit(outlets, etc) Then, disconnected the...
  15. C

    Socket Tester Neutral Fault

    Today I was doing an EICR and went around a couple sockets with a Megger MST220 socket tester just to see if there was anything obvious, all three green lights came on saying everything was fine and correct. When I took the faceplate off to do my R1 R2s I got readings of 0.60 on R1 but then...
  16. littlespark

    Fire alarm panel. Don’t recognise fault code

    The big stately home I’ve been working in has an EMS 5096 alarm system with over 100 detectors and 3 (that I know of) panels. All detectors are battery powered and radio back to its closest panel. All panels are also radio linked together. They get the odd fault code which is usually a flat...
  17. buzzlightyear

    What is it on this fault

    This for an apprentice 32 amp mcb /63amp RCD 1) no power to the sockets 2) installation resistance all good. 3) contunuty good. 4) no loses conections. 5) mcb not tripped 6)rcd not tripped. 7) all mains on. What is it.
  18. G

    CDA Wine Cooler fault

    Hi, my CDA FWC303 wine fridge is knackered. The compressor doesn't start and I've traced it to the PTC which I plan to replace and have identified the required spare part. However, the thermal overload protector has a continuity reading of 3.2 ohms between terminals which although still pretty...
  19. littlespark

    Central locking fault

    Anyone know how to bypass central locking on this vehicle? Also, how to start it without a key? Asking for a friend. 🙂😂🤣
  20. J

    Fault finding board for training

    I have recently taken on a lecture role at a local college. Their facilities are in ---- state. My aim to rebuild/build a comprehensive fault finding and testing and inspection rig. I cannot find a schematic anywhere. I have the city and guilds one for the test rig, however, I’m after building a...
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