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Model # SMS63E12GB/01
FD # 9004 00035* Machine will display E24 after a few minutes.
* No water enters the machine. * At the start of the program the empty pump runs as normal.
* Circulation pumps runs, attempting wash with no water
* Inlet valve is fine but never energised.Initially, I attempted to start a program with the reed switch disconnected and the machine filled.
Replaced reed switch and E24 still present.
It’s as if the machine already thinks it is full.
Any ideas please, thanks.
Re: Bosch dishwasher E24
As you probably know E24 refers to a drain pump issue. But it could also mean the drain valve is partially open or worse still the actual heat pump is running slow.
Have you actually changed the drain pump out of interest?
Re: Bosch dishwasher E24
Also try opening the door 3 or 4 times every 15 seconds upon starting & see if it eventually behaves itself.
Re: Bosch dishwasher E24
Martin wrote:As you probably know E24 refers to a drain pump issue. But it could also mean the drain valve is partially open or worse still the actual heat pump is running slow.
Have you actually changed the drain pump out of interest?
No, I haven’t changed the empty pump as it appears to work perfectly.
On first visit, out of curiosity, I attempted to run a program with the reed flow meter (RFM) disconnected. The machine started filling! I cancelled that program and the machine emptied perfectly. I connected the RFM, attempted the program, and got E24 again!
The RFM meter was a perfect circuit: 0.00 Ohms. Which means its faulty.
Just prior to displaying the E24 fault (this is about 5 minutes into the quick wash cycle, after the empty pump has finished) it briefly runs the heat pump. I can hear that unmistakable sound of it gurgling. There is never any attempt to fill.
Going to return Monday.
Re: Bosch dishwasher E24
When you start a cycle, these dishwashers will drain first, then you will hear the heatpump run up momentarily. Then you will hear a burst of water then stop. After about 20 seconds it will fill and progress through the wash.
From the start:-
The drain pump ramps up to speed and is monitored by module. Then the heatpump ramps up the same. The burst of water is to test the flow rate through the flowmeter. If all OK it will wash as normal.
E24 is normally blockage / kinked outlet hose / drain pump slow (or failing) then heatpump slow (or failing) in that general order. Most of the E24’s I have had have been heatpump failing unfortunately.Hope that helps,
Steve.
Re: Bosch dishwasher E24
Indeed, opening the door whilst the module is checking the heat pump is enough to cure the E24.
So, upon starting program. Empty pump has ramped up, then Brief silence followed by heat pump ramping up. Interrupting the door whilst the heat pump is working cures the fault.
Can I suspect that as Interrupting the program whilst the module is checking the heatpump means the heat pump is at fault? That’s what my logic dictates…
Cheers for all the help all.
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