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post #1 of 22 (permalink) Old 15-08-2019, 13:09 Thread Starter
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Help, no display...

On either the Thetford fridge (can't turn it on) or the Truma display for setting van temp, water heater, fridge energy supply...

Lights are working, and water pump.

Help, going off this weekend.

Jean
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post #2 of 22 (permalink) Old 15-08-2019, 13:42
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The first and obvious thing to check are the fuses Jean, don't just go by looking pull them out and test them.

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post #3 of 22 (permalink) Old 15-08-2019, 18:06
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If you don't have a multimeter, this is a handy tool to carry in your motorhome.


https://www.ebay.co.uk/itm/Car-Boat-...YAAOSwHPpcuvu-

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post #4 of 22 (permalink) Old 15-08-2019, 19:08 Thread Starter
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I've found the fuses (which is a start!).

Looked at the 2 yellow 20As to the left of the battery in/out switch. Both look good. Are these the fuses to query?

I do have multimeter, as photo, but never remember how to use. I'll look up online but if anyone can give me crash instructions, that would be good.
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Jean
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post #5 of 22 (permalink) Old 15-08-2019, 19:10 Thread Starter
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Oops, I just looked up at the display and it's working, as is the display on the fridge! The fuse must've worked it's way loose n I've reseated it.

Happy days!

Thanks for the input Drew!
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Jean
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post #6 of 22 (permalink) Old 15-08-2019, 19:20
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Over the years Jean I have discovered that fuses can look good but if fact they have blown, hence the reason I always advise people to physically check them with a meter or whatever.

I still use an old audible tester that I made when I was at school.
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post #7 of 22 (permalink) Old 15-08-2019, 19:35
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Staying local or hitting the sunshine Jean ?

Terry

I'm a Euro Unionist, Testiculi ad Brexitam

Brexit: the incapable in pursuit of the unobtainable to satisfy the delusional. (Edwin Hayward)

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post #8 of 22 (permalink) Old 15-08-2019, 19:58
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Looks like the two 20 amp fuses on the left of your photo will control the fridge and heater.
To check whether the fuses are OK or not, pull them out and then, on the tester fit the black lead into the socket marked COM, red lead into the one to the right of it marked V Ὠ,, set the dial scale to one of the settings to the left of the 6 o clock position for simple continuity testing use the highest scale, then using the probes touch one probe to each of the legs of fuse if OK the scale will register a value, if they have failed then the display should not change.

You ought to try to find the cause of the failure, which is likely to be more involved.

.

John

Last edited by eurajohn; 15-08-2019 at 20:07.
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post #9 of 22 (permalink) Old 15-08-2019, 21:12 Thread Starter
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Originally Posted by dghr272 View Post
Staying local or hitting the sunshine Jean ?

Terry
Just local Terry (Gosford Forest Park with one of the clubs) so likely to be grey n wet! Taking my granddaughter so she'll brighten things.
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Originally Posted by eurajohn View Post
Looks like the two 20 amp fuses on the left of your photo will control the fridge and heater.
To check whether the fuses are OK or not, pull them out and then, on the tester fit the black lead into the socket marked COM, red lead into the one to the right of it marked V Ὠ,, set the dial scale to one of the settings to the left of the 6 o clock position for simple continuity testing use the highest scale, then using the probes touch one probe to each of the legs of fuse if OK the scale will register a value, if they have failed then the display should not change.
Thanks for the comprehensive instructions John. Will give that a try tomorrow - if only for practice.
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Originally Posted by eurajohn View Post
You ought to try to find the cause of the failure, which is likely to be more involved.
You don't think it had just worked loose? I didn't change the fuse, just took it out n replaced it.

Jean
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post #10 of 22 (permalink) Old 16-08-2019, 00:14
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Quote:
Originally Posted by jiwawa View Post
I've found the fuses (which is a start!).

Looked at the 2 yellow 20As to the left of the battery in/out switch. Both look good. Are these the fuses to query?

I do have multimeter, as photo, but never remember how to use. I'll look up online but if anyone can give me crash instructions, that would be good.
No need for a multimeter to test fuses , I always keep this little cheap tester handy .
https://www.ebay.co.uk/itm/MAGIC-MUL...EAAMXQDnpTYLBA
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