Bosch Serie 8 WTW87560GB/02 Lukewarm

[whirlpoolsucks]

Thanks [USER=”4209″]electrofix[/USER] and [USER=”49782″]kaibart[/USER] – will take a look next weekend

[whirlpoolsucks]

I took the whole machine apart last weekend and cleaned both the condenser and evaporator. The front of both was completely blocked with a “sheet” of lint.
All back together but the machine still isn’t really drying properly – takes a day or two for each load. There are no error codes when I run the dryer normally.

When I had the machine apart I did a quick check on the pump (resistance) and it seems OK (around 170ohms).

I’ve now had a chance to cycle through each of the programs (1 through 28) in test mode. I have no idea what each test does as I still can’t find anything detailing the modes but P01 – P09 seem to go through their paces without throwing anything up on the display.
P10 gives 10 followed by 979
P11 gives 10 followed by 826
P12, P13, P18 through P28 all stop at 5 with an E-14 and -00

Anyone know what those results mean?

[kaibart]

P2 is compressor test you should have min 350w by the time it stops on it own if you haven’t no repair possible

[whirlpoolsucks]

Do you know how long the test should last? It’s been 14 minutes and still displaying 1. I’ve rerun tests 1-9 and here’s the results.

P01 – 1 displayed: light comes on, drum rotates, light goes out, 2 displayed: humming sound. Test ends – no errors
P02 – 1 displayed: light comes on, short hum (I guess the compressor being energised, light goes out. Test still running?
P03 – 1 displayed: light comes on, sounds like pump running, 2 displayed: pump sound stops, 3 displayed: loud clunk, pump sound starts again, 4 displayed: pump sound stops, 0 displayed: Test ends – no errors
P04 – 1 displayed: light comes on, loud clunk, 2 displayed: test stops – E:14 -00 displayed with rapid beeps. Machine needs to be turned off to continue other tests
P05 – light comes on sound of relay clicking, test ends – no errors
P06 – light comes on sound of relay clicking, test ends – no errors
P07 – 1 displayed: light comes on, sound of something running but not sure what (pump?), 2 displayed: loud clunk, pump? stops, 3 displayed: loud clunk, 4 displayed: pump? starts, 5 displayed: pump? Stops, 6 displayed: test ends – no errors
P08 – all panel lights illuminate, test ends – no errors
P09 – light comes on, display panel blank, light goes off, test ends – no errors

[whirlpoolsucks]

Can’t see how to edit my post to update it. P:02 finished after about 30 minutes but I wasn’t there to see any numbers shown. No errors. So will re-run it and see if I can get a number.

[whirlpoolsucks]

Re-run – after 30 minutes it flashed 0 then the test ended with no errors.

[kaibart]

You are checking if the compressor is working correctly to do this you will need something you can plug I to see how many Watts are getting pulled when the on p2 test forget all the other settings if you have 350w then the compressor is working correctly

[whirlpoolsucks]

Apologies for the delay coming back on this – work got in the way and I wasn’t getting pressure from she who must be obeyed as the weather was nice so I haven’t had a chance to look at it until this afternoon.
From what I can see the compressor isn’t even switching on.
Ran P:02 with the dryer plugged into a power meter plug – best solution I could come up with as I don’t have a clamp meter. For the whole 30 minutes the power never went above 5W.
Took the side panel off to check voltage at capacitor that feeds across the compressor and there’s 0ac. The compressor isn’t running at all.

Did a resistance check on the compressor – not sure on Common, Start and run wires but..
Red/White to Black/White = 13ohms
Red/White to Blue/White = 8ohms
Blue/White to Black/White = 7ohms

Checked the capacitor just using the resistance as my DMM doesn’t read capacitance – and it climbs to infinity as expected. Tracing the power lines back to the board and that line is the line that the relay that melted sits on. So my thoughts are there’s still a power board issue. Does that sound right?

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