Bosch Maxx 6 not draining
Heeeelllp!!!
I am usually handy with keeping our washing machines going but this one is giving me nightmares.
The serial number is wab28161gb/13
So, the washer would not drain. I removed the filter and found it blocked with a coin, hair bobbles and fluff. Removing the debris didn't work so I replaced the pump.
The fault remained so delving deeper I discovered that the transistor that feeds the pump had blown. New board fitted...still faulty.
I have checked the rubber sump with the ball in it...all clear. The drain hose & u bend...all clear. Supply the pump directly with 240v (via the loom from the board)...pumps out fine...so that tells me that the wiring loom and pump are okay but the new board isn't supplying power to the pump. It'll even do a wash cycle before permanently showing 1 minute remaining and the washing symbol.
Am loath to say the new board is faulty though...am I missing something? Are there any other components that influence the board to switch the pump on?
Solution Summary
AI-generated from this discussion
This thread was marked as solved. Here's a summary of the problem and the fix, generated from the discussion below.
Bosch Maxx 6 WAB28161GB/13 would not drain and stayed on 1 minute
- The problem
- Bosch Maxx 6 WAB28161GB/13 would not drain. The filter was found blocked with a coin, hair bobbles and fluff, but clearing it did not restore draining. The machine could complete a wash cycle but then remained on 1 minute with the washing symbol, and the pump was not being powered by the control board.
- Likely cause
- The discussion suggests the PCB was probably not the root cause because a replacement board behaved the same as the original. The strongest supported diagnosis was a fault elsewhere in the drain control circuit, with checks advised on continuity from the PCB to the pump, PCB plug connections, and the pressure system. An open-circuit heater was mentioned only as a common cause of being stuck on the last minute, not as a confirmed cause here.
- What fixed it
- Debris was removed from the filter, the drain pump was replaced, and a new PCB was fitted, but the fault remained. Recommended checks were continuity between the pump live connector and the PCB connector, all PCB plug connections, and the pressure system. The exact repair was not confirmed because the appliance was replaced instead of repaired.
- Checks to try
- Filter checked and cleared of coin, hair bobbles and fluff
- Rubber sump with ball checked and found clear
- Drain hose and U-bend checked and found clear
- Pump run directly on 240V via the loom and pumped out fine
- Recommended: continuity check between pump live connector and PCB connector
- Recommended: check all PCB plug connections
- Recommended: check pressure system
- Parts or tools mentioned
- Drain pump
- PCB/control board
Safety: Further diagnosis should be carried out by a suitably qualified appliance engineer.
2 Answers
Sorry Isla. I always moderate posts within the hour, but sometimes when I do it on my mobile phone is says it’s done it but later I find out it hasn’t.
If the new PCB is behaving exactly like the old one, with the same fault, it would be very unlikely to be faulty and more likely that the fault wasn’t on the PCB.
A washing machine stuck on last minute is often an open circuit heating element but wouldn’t expect that to interfere with the pump. Especially if the pump still doesn’t run in a spin only cycle.
Have you got continuity between the live connector to the pump and the PCB connector? Have you checked all the connections on the PCB plugs?
The pressure system is involved in the pumping as it tells the PCB when there is water inside and when there is not. Check on my main Whitegoodshelp site for several articles on the pressure system for a better understanding.
Need Professional Help or Spare Parts?
Hiya Andy,
I replaced the washing machine in the end. Without spare parts to hand, fault finding by swapping parts took too long. Have had a good run of Bosch machines but drew a line with this one as it wasn't a good purchase in hindsight so have took a chance with an Indesit. Was over £100 cheaper than the basic Bosch with a 2 year guarantee so will see how it goes
Kind regards,
isla
Your Answer
Sign in to share your expertise and post an answer.
Related Questions
Bosch Avantixx Washing Machine Not Draining
1 answer • 4 replies
How does one remove front panel to gain access to the drain pump of a Bosch VarioPerfect Serie | 4 model WAN24001GB/19 ?
1 answer • 15 replies
WAU28T51GB/01 won't drain
1 answer • 23 replies
Bosch VP4 hangs on 1 minute on wash cycles, but can drain fine otherwise
1 answer • 1 reply
I can't find an emergency drain pipe on a Bosch Maxx 6!!
1 answer • 2 replies
Bosch WM drains ok, begins to spin but stops
1 answer • 10 replies
Bosch Washing Machine Drain Problem
1 answer • 1 reply
Bosch Not Draining
1 answer • 32 replies
Bosch Logixx 8 drainage/waste hose replacement
1 answer • 3 replies
Bosch won't drain on programmes
1 answer • 1 reply