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Fisher & Paykel GWL10 - stop working  Rate Topic 
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 Posted: Sat Aug 21st, 2010 09:26 pm
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coleg12
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Hello,

We have Fisher & Paykel GWL10US (ser.# DAL585509) washer that stopped to work. There is no lights on panel, but unit is humming and constantly consuming about 40Wt of power when plugging in (measured it though UPM plug-in energy meter). I found service manual that shows parts and assembly, but I really appreciate for electrical diagram as well as any kind of troubleshooting guide. I already checked inlet hose screens and will be pulling out washer this night (that is quite challenging in our tight installation) to look inside.


Thanks in advance for any help,
coleg12
PS: As this is my first post, I hope I didn't break any posting rules

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 Posted: Sun Aug 22nd, 2010 05:33 pm
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appl.tech.29501
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service manual linked PM. wiring diagram section 4



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 Posted: Wed Aug 25th, 2010 07:29 am
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coleg12
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Thanks, appl.tech.29501!

More details on this. That's pump motor that is humming. There is no visual signs of any burning, it's resistance is 25 Ohms as opposite to 36 that service manual suggests. Further on, there is no AC voltage between white and brown wires that goes to the pump's motor, but there is about 290 V AC between ground (green wire) and white and 0V between ground and brown wires. I question now circuit board (426471G). Any chance somebody has electical schema for that circuit board? Will much appreciate it.

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 Posted: Thu Aug 26th, 2010 03:58 am
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appl.tech.29501
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coleg12 wrote: Thanks, appl.tech.29501!

More details on this. That's pump motor that is humming. There is no visual signs of any burning, it's resistance is 25 Ohms as opposite to 36 that service manual suggests. Further on, there is no AC voltage between white and brown wires that goes to the pump's motor, but there is about 290 V AC between ground (green wire) and white and 0V between ground and brown wires. I question now circuit board (426471G). Any chance somebody has electical schema for that circuit board? Will much appreciate it.
 

I'm confused,

Pump is humming..... "no voltage to the pumps motor"

"290" VAC.....that must be a typo?

wont be able to find a schematic for the board.



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 Posted: Thu Aug 26th, 2010 08:06 am
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coleg12
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Did more measuring with another multimeter - it shows completely different numbers; not sure if it's because of possible presence of DC voltage or just bad old multimeter (used if for years with no problems).

Anyhow, with another meter there is still different voltage on white wire/PumpB (115VAC) versus brown/PumbA terminal (50VAC) when measured relative to the ground and with pump  disconnected. Looking at circuit board my suspicion is on bipolar transistor IRG4C10U (8.5 Amps max) that powers PumpB terminal. Somewhat surprisingly, PumpA terminal as well as main motor's MotorA/B/C powered by more powerful IRG4C20F bipolar transistor (22 Amps max) and they all have 50VAC. Not sure if it's by design and  thinking on replacing it now.

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 Posted: Thu Aug 26th, 2010 08:50 am
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Samurai Appliance Repair Man
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The pump might have gotten wet from water dripping on it (leaking seal or hose). If the pump shorts out, it'll take the control board out with it. Be doubly-woubly sure you don't drippage on the pump. Will probably need to change the pump. If no joy, then you'll have to change the control board, too.



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