Display fridge continuously cooling

[BigTunz]

Hi
I have a display fridge that is continuously cooling beyond the set point of 7C.
It has a Carel easy cool temperature controller.
I have fitted a new NTC probe but has made no difference.
Any ideas?

[install monkey]

relay on controller welded/sticking- when its below sepoint tap it with ur fingers see if the relay drops out

[monkey spanners]

What Monkey said^ Stuck relay, alter the set point to see if the compressor running indication dot on the display cycles to see for sure.

I have once seen burnt wiring causing things not to turn off as the insulation had melted and the copper wire were touching.

[charlie patt]

with easy cools they also have a run time on them if set up could be running on time not temp also some have overun facility or ofset been set up incorrectley i no but it is a carel check to sea if snowflake is lit up on controller if no snowflake and its still cooling as above says i always used to fit just controller but now in last three years we fit relays to take load of controllers

[BigTunz]

Thanks will check the above.
Link that shows parameter settings:
http://www.carel.com/carelcom/web/do.../050004121.pdf

[BigTunz]

Hi - tried the above suggestions.
In the end fitted a new controller and it sorted the problem.
I was holding the controller as I powered up the fridge and felt a distinctive click which I'm presuming is the relay energising on.
Will use this site again.
I bought the controller from Hawco - but they charged me £15 for delivery! Does any body know anywhere cheaper?

[install monkey]

srw do em-dunno how much
sometimes theres a relay on a pcb that switches a higher rated relay

[monkey spanners]

I expect the cost of postage has to to cover the packaging/postage and the persons wages who picks and packs the items.

I had to post a part to a customer, the postage was £5.50 but taking into account the time it took and my normal hourly rate it should have cost them nearly £60.00 for a part i made £4.20 mark up on....
Now Hawco will be much better set up for sending stuff than me but it will have a cost.

[install monkey]

dunno john, bet your origami/ninja training ensures all folds are sharp and crisp and bet ur a dab hand with the bow!

I expect the cost of postage has to to cover the packaging/postage and the persons wages who picks and packs the items.

I had to post a part to a customer, the postage was £5.50 but taking into account the time it took and my normal hourly rate it should have cost them nearly £60.00 for a part i made £4.20 mark up on....
Now Hawco will be much better set up for sending stuff than me but it will have a cost.