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Our fridge seems to be misbehaving after 8 years trouble-free operation…
Fridge temp display was showing 2degC this morning. Unusual as it only usually gets this low when the super-cool button has been pressed. Last time super-cool had been used was yesterday afternoon. Thought nothing of it at the time, but made a mental note…
This afternoon the display was showing 8degC; instead of the usual 5 or 6degC, and no sign of the fridge coming to life. Waited a while, but no pump activity and temp reached 9degC.
Pressed the super-cool button, the pump started and pulled temp down to 2degC as normal
Pressed super-cool button again to de-activate
Now turned temp dial fully clockwise (position 4) and fridge currently seems to be holding 6degC
The dial had previously (since new) been set at 3.5 to hold temp at around 5 to 6degC (instead of at position 2.5 as suggested in the user manual). Thought it unusual at the time to require dial to be turned nearly full clockwise, but the fridge has held temp consistently over the years…
Do the current witnessed fluctuations suggest temp probe or pcb as likely culprit?
Any Liebherrr service support in Darlington, Co. Durham?
Any help gratefully received
Thanks
Dave
Re: Liebherrr KlPe 1740 fridge out of control
Hi dave, can you get me the service number? It’s on the white rating plate on the left hand side, at the bottom.
Re: Liebherrr KlPe 1740 fridge out of control
Service number is 9951120-02
This morning temp is showing 5degC, this being what I would have expected having turned the dial more clockwise.
Any thoughts as to the strange behaviour? Dodgy temp probe? Loose connection?
Dave
Re: Liebherrr KlPe 1740 fridge out of control
Fridge displaying 2decC again this morning (but not feeling particularly cold in there). Supercool had been used last night, but that cancelled itself at 11pm.
I briefly switched supercool on then off again and now the display has jumped to 5degC
Fridge pump has kicked-in and it appears that temp now being controlled
Is this suggestive of thermostat/temp probe issue rather than pcb?
Dave
Re: Liebherrr KlPe 1740 fridge out of control
In last few minutes (subsequent to previous post) temp went up to 8degC. Switched power off/on to see if that might reset something. After the power reset, the display shows 0 and F alternating. What does this mean?
After a further few moments display showing 9degC. Hoping pump kicks in before we go out…
If not, will have to activate supercool to get temp down
Pump hasn’t kicked in. Pressed supercool and indicator illuminated, but no pump activity. Switched power off/on, alternating 0 and F again then 9 degC. Supercool pressed and working this time.
Help !!!
Dave
Re: Liebherrr KlPe 1740 fridge out of control
hi dave, sorry for not replying earlier.
your fridge is controlled by a thermostat, which has failed. activating supercool just bypasses the thermostat and puts a live down to the compressor to make it run, to achieve 2c. this will switch itself off after a while, which is why the unit reverts back to 8 or 9c.
F0 indicates this too.
you need a new thermostat, part number 6151028.cheers.
Re: Liebherrr KlPe 1740 fridge out of control
Thanks for your response and confirmation of the root cause.
Checked availability of 6151028 and showing as 15 to 26 days!!
A local plumber has quoted £68 call-out and another £25 per 15mins in attendance. Does this sound reasonable?
Is thermostat replacement easy to DIY or does it require special tools/skills?
Thanks and regards (and Happy New Year!!)
Dave
Re: Liebherrr KlPe 1740 fridge out of control
Hi Dave
A plumber is for water and not electricity. Find an refrigeration engineer or domestic appliance engineer.
Bryan
Re: Liebherrr KlPe 1740 fridge out of control
a local plumber??
dear me.
with all due respect it’s not exactly a plumbers job.
to change the thermostat on this model is not the most challenging of jobs, but I still wouldn’t trust it to a plumber, more to someone who is used to dealing with these appliances on a regular basis.
where are you based?
where have you looked for the part?
happy new year to you too!Re: Liebherrr KlPe 1740 fridge out of control
Sorry, it was local refrigeration specialist quoting those prices (Lewis Electrical Services, Darlington). Don’t know why I said plumber!! Too much alcohol last few days!!
Looked for the part on here (i.e. uk whitegoods). Not spoken direct with Liebherr (they reopen tomorrow)
Could this be done DIY? Does the display panel just pop off? Does the probe just slide into position or is it tricky to get it to feed into its required position?
Thanks again
Dave
Re: Liebherrr KlPe 1740 fridge out of control
Not sure what the other guys think but that sounds expensive to me.
Re: Liebherrr KlPe 1740 fridge out of control
two small panels either side of the display panel come off, revealing two t15 torx screws holding the facia on.
unscrewing these will allow the facia to be puller forwards, revealing the thermostat and its connections.
the thermostat capillary tube locates into a plastic sleeve that runs along the top of the fridge and down inside, terminating at the foot of the evaporator plate.
you’ll have to replace the connections, like for like and then push the capillary tube firmly down the sleeving until it comes to rest at the bottom of the evaporator. replace all as you found it and then job done.
obviously make sure that the power is off. if you’re not confident with this work then call someone out. it should take 10 mins max, but please don’t call a plumber!!Re: Liebherrr KlPe 1740 fridge out of control
No, use of a plumber was never my intention – just blurted it out subconsciously!!
Thanks for those instructions. Does capillary tube normally slide through sleeve easily or can it get stuck enroute? I guess the bend between horizontal and vertical is the likely problem area…
Where would you recommend I obtain thermostat for shortest lead time?
Many thanks
Dave
Re: Liebherrr KlPe 1740 fridge out of control
normally capillary tube just pushes straight through.
id email this site tomorrow to see if that delivery time can be improved on at all.
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