Hoover DYN9166P

[gizmo]

Hi

I am looking at a faulty Hoover DYN9166P for a friend. It came with their house so history isn't known. It was stored in very damp conditions and has not worked properly since being put back into service.

It fills, washes OK but when it pumps out, it pumps for ages then times out and gives error 03 which relates to pump not working - but the pump works fine. It is obviously not detecting that the pressure switch has reset back to empty. The pressure switch is resetting though. (the low level switch in the pressure switch is going back to open circuit.)

I have been through the self diagnostic procedure and it does the same - hangs on the pump out, till it times out and give E03.

I suspect a main board fault - it isn't detecting that the pressure switch has reset. Does anyone repair these boards?

Any other suggestions?

I have tried a pressure switch from a Whirlpool front loader (same brand and design of pressure switch) but no change in behaviour.

Also, if anyone owns one of these machines, is it normal for it to fill in short bursts? When filling, it takes in water in short bursts of 5 seconds or so, then pauses, then another burst of fill. Does this also suggest a bad main board?

Frustrating because it almost works properly...

thanks.

 

[iej]

Clean the tube that connects to the pressure switch by blowing air down it.
You might be best to use a keyboard cleaning spray.

Disconnect it from the sensor and blow it back into the drum. If it's very badly blocked with detergent residue or mould you might need a new tube.

 

[gizmo]

I've already done that, it didn't help.

(that trick worked for my Asko many years ago.)

thanks lej

chris.

 

[reversomatic]

Hoover/Candy E03 error.

Hi Gizmo, this is a common fault on Hoover/Candy washers and is usualy caused by an earth fault on the heating element. An easy test without the aid of an insulation tester I.E. Megger, is to isolate machine from mains supply then disconect the 2 heater wires,insulate the bare ends and then run a wash. If runs O.K. then replace heater.The heater only needs a slight earth fault for this to happen.The reason for this is that the main board only gets a tub full signal from the water level switch there is no tub empty signal the logic being that if the tub isnt full it must be empty thus if there is an earth fault on the heater the board gets an earth/neutral supply so recognises tub still being full.Hope this helps.
Regards Nige.

 

[gizmo]

wow that makes a lot of sense.

I will try insulating the heater connections tomorrow.

Thanks

Chris.

 

[haxisfan]

Hi Gizmo

As suggested I can confirm it's the heater or the NTC probe... these usually come together as a spare part but sometimes you can just get the NTC probe for a fiver. Good luck ;-)

 

[gizmo]

yes, it's the heater.

I disconnected the heater by unplugging the heater connection to the main board.

It works! (but no heater...)

now I will ask its owners if they want it repaired or, if they wash in cold water, do I just leave the heater disconnected?

Most people here in Australia wash in cold water.

NOT ME!!!

Thanks Reversomatic. Thanks Haxisfan.

I really appreciate your advice which has proven perfect.

 

[gizmo]

What a silly design!

The pressure switch does have a terminal to provide a positive signal that drum is empty. That terminal isn't used in the Candy / Hoover machines. I tried another pressure switch from a Whirlpool, it was an almost identical pressure switch and the extra terminal IS used in the Whirlpool. This silly design must have saved Candy 1 cent per washer???

Heater elements do become slightly leaky over time, some earth leakage is NORMAL. The machine is connected to a RCD (earth leakage breaker) and it doesn't trip so the leakage must be small...

Chris.

 

[haxisfan]

Hello again

Hi Gizmo... I'm glad you solved that... I hope the owners decide to replace the heater... cold washing might be ok when done sporadically... but it might not be advisable for continuous use in a modern front loader. I'm not sure why Hoover/Candy does not use that terminal in the pressure switch... maybe they just adopt a different method... really and truly the right error code for this situation should be E16, but it's preceded by E03 somehow making things rather confusing! In their defense though I can say that I've been using their appliances for many many years and they've all been fantastic examples of reliability... only recently I had my first issue with my Dynamic but that was completely my fault as I accidentally blew it up... well... long story but it's all sorted now... and it wasn't just a matter of replacing a thermostat!

 

[haxisfan]

And me again...

Just realised the reason why Hoover/Candy machines don't rely on a direct link from the pressure switch to trigger the tub refill... this is perhaps due to the fact that the PCB needs to allow some time for the water to be absorbed by the clothes in order to calculate the type of fabric and the size of the load. E.g. if the pressure switch triggered a refill as soon as the water level dropped, the calculation of the load size would be less precise because whether there is a half load, a 3/4 load or a full load, the water is bound to be absorbed and would trigger multiple refills resulting in the machine assuming it's dealing with a full load. When the pressure switch gives the signal of 'tub full' and consequently 'tub empty', the PCB will not allow the machine to take any more water until it's ready for it

 

[gizmo]

don't look now but there's another fault...

When the machine finishes a cycle it shows END with a picture of a lock - to show the door is still locked.

It sticks at that point - the door releases after a minute or two, but the lock symbol remains on the screen and it doesn't respond to pressing start/pause or selecting any other cycle. It is stuck at that point.
Holding down pause button does nothing.

I have found I can reset by:
1. turn off power on front panel. (Regular 1/0 button)
2. press day/night button below display and keep holding it in.
3. press on/off button again. Keep holding day/night button.

Display begins flashing everything - every symbol lights up. Now release day/night button.

END display is now gone, machine can be set to a new cycle.