[bigi]

So, I’ve taken the pump and heater unit out to clean it, and tested the heater element again – this time at the terminals not the heater element itself. One of the thermal fuses has gone again – same as last time, but this time didn’t throw an f08 error, just kept running without heating? Only difference this time is I’ve replaced the heater relays too?

from the service manual, it seems there is an integrated thermal fuse and a thermal protector, the side connected to pin 3 on the control board (dea603 board) appears to be the thermal fuse.

it’s the relays already replaced, its lasted 9
months this time – is there anything else I should consider?

[bigi]

I’ve just done some basic tests – heater element shows approx 27.5R across the terminals with cable disconnected, pump wires are fine between pump and board, motor showing 36R across terminals – does that seem a bit low?

[bigi]

So finally had chance to spend some time with the patient today!
from the service Manual I initiated the self
test mode – it firstly displays the f08 error (which is obviously because of the earlier error), then it starts the test cycle, but stops after about a minute reporting f10 with a flashing orange start button – but I can hear a pump still running until I force it to stop?

[bigi]

Thanks for the explanation, makes more sense now. Although the motor was replaced when I replaced the heater housing last year – after your help I discovered that the housing part number quoted actually referenced a motor/pump part number as well. I bought both and they mate together fine, the pipe out of the heater housing is slightly different positioning, but connects perfectly.

so if the motor has failed this soon I will be surprised (but not too shocked these days….!)

guess the only way to test would be pulling the motor and checking for play?

[bigi]

Wtaf that is stupid! How on earth would that make sense – Motor is circulating water and heater is ok but not heating?! Only possible reason for that I can think of is a failed impeller….but surely that would stop the water flow?

[bigi]

Cheers for the reply again Dave!

I don’t think it’s the motor because I can hear it running and the water is getting distributed by the arms.
I did notice that the water was getting slightly above cold after running for a while, but not hot enough to melt the wax seal on a dishwasher cleaning bottle! I also noticed a two hour clean cycle was stuck on 1:23 for about an hour u til I cancelled it last night, which suggests maybe heater circuit – but when it failed last time I got an error code, this is giving nothing, and I would have suspected a heating timeout fault?

[bigi]

And so the saga continues…..!

I replaced all 3 relays on board and the dishwasher has been great…..up until this week!

The oh complained the dishwasher needed salt because it was leaving white marks on everything – refilled everything but still the same. When I checked it was grease…..so cleaned out dishwasher filters and put a cleaning bottle in on intensive 65’. Opened door and water stone cold!

there are no errors showing up and the cycles are running normally like everything is ok – when the element failed before it gave an error.

is this likely to be a faulty replacement relay or something else worth checking? The control board on this is a pain in the #*@!* to get out….!

[bigi]

Thank you very much for your help Dave, really appreciated! Will order now!

[bigi]

https://ibb.co/xf1LWx4
https://ibb.co/hK3HftT
https://ibb.co/5xGcc4v
https://ibb.co/Y3MFZvH[IMG2=JSON]{“data-align”:”none”,”data-size”:”full”,”src”:”https://ibb.co/qm5P1zq”}[/IMG2]
https://ibb.co/qm5P1zq

hopefully these work now. They are public links

[bigi]

Apologies, the hyperlinks are not working and I can’t edit them now! If you copy and paste the displayed urls they work…

[bigi]

Hi Dave

have attached images below as requested. The c1 notation appears to indicate a ‘special version’ of relay but not what!

https://ibb.co/xf1LWx4
https://ibb.co/hK3HftT
https://ibb.co/5xGcc4v
https://ibb.co/Y3MFZvH[IMG2=JSON]{“data-align”:”none”,”data-size”:”full”,”src”:”https://ibb.co/qm5P1zq”}[/IMG2]
https://ibb.co/qm5P1zq

thanks for your help!

Ian

[bigi]

So I have taken the board out and it uses sanyou relays which I cannot find anywhere except in bulk. I don’t suppose anyone can suggest alternatives here can they? Model of relay is SRD-S-112DM-F-C1

[bigi]

Thanks for the reply Dave. I had to replace the pump/motor when I changed the heater element, so that is new.

any pointers on which relay I need to replace? Can’t find much info online for it

[bigi]

Thanks for the reply and info. However it seems that part has been discontinued – if you order this part you actually get a different part which physically doesn’t fit and is different dimensions. I actually ordered it from three different places, all listing that exact part but the ‘replacement’ version arrived. I did find that oddly a pump part number was listed as the replacement for this part on some
sites, so I ordered that and this is a direct replacement for my original
pump, but smaller dimensions so the new element fits fine.

all has been well for about 8-9 weeks with the washer used every day. Today, it gave an f10 error again – when I checked the element the thermal fuse on the element itself has blown again (same as last time). The suppliers are sending a replacement heater housing again but im wondering if the reason this and the original elements failed is because the relay is sticking on the control board. Im
not averse to replacing a relay if I need to – but if it needs a new control board I may just give up now as it’s not worth the cost!

[bigi]

Thanks for the reply Dave, I have a feeling mine is the obsolete part as that is the number I found.

commercial code is 36827482500. As is say I’m more than happy to swap the motor out as well if needs be, but not sure if the controller will be so happy!

many thanks

Ian

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