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Hello. First, try to reset the control board. There are 2 buttons with arrows underneath. Press and hold them both for several seconds, maybe a little longer--this will perform a reset on the control board. See if that clears up the problem. Also, are there any lights blinking? Dishwashers will flash error codes(in binary format) by blinking certain lights in a pattern(i.e. The "sensing" light will blink 2 or 3 times, then the "cycle complete" light will blink 2-3-4 times--something like that) It could be any combination of lights depending on the component that has failed or has a problem. Components can be the drain pump, main wash motor, float switch(if present), heater circuit, inlet water valve, flood switch(if present), etc...
The dishwasher you're speaking of (provided it is indeed a Gaggenau GM954) is built by Bosch as you may or may not know.
To address your concern regarding the 2H in the display actually needs to be done in two parts. I'll start with the basic info associated with the 2H displayed.
This can be simply indicating the previous cycle exceeded a 2 hour wash cycle, not necessarily an error and can be attributed with too cold water entering the dishwasher (below the recommended 120F), a longer than normal drain time (due to partial blockages, kink etc. hence longer time needed to complete the cycle) or inproper water circulation during the cycle.
Aside from these issues, it (2H) can also mean the unit has a heating error and if left long enough will show another error of "1" in the display, extremely long wash times, etc.
**The first thing I'd suggest before attempting any repair is running an additional cycle while making sure the water inlet is hot (120F optimum) and the unit does indeed drain fine.
**A fair indication of proper draining is to start a cycle and once washing begins (2-3 minutes) activate the "cancel" and the unit should adequately drain in the 2 minute time allowance.
**To identify proper water circulation, place an empty cup in the upright position in the top rack, start a cycle and inspect the cup after 2-3 minutes and it should be full of water.
After trying and posting the results of these thing's we can move forward with potential heating errors, the cause, and how to remedy them. Let me know what you find and I'll continue to assist you in any manner possible going forward. Good luck.
Hi welcome to Fixya. You're right what you're describing is not delay start, but rather a problem with one of the heating component's and most likely the heater relay on the electronic control. The wash cycle has exceeded two hours without a temperature increase of the water and therefore the control "thinks" something is wrong. Whether there is or isn't remains to be seen. Likely if you let the unit operate from that point of displaying "2H" it will run and run for several hours and not heat the water. You can confirm this by pulling out the control and visually inspecting the printed circuit side of the control. Look for a burnt solder on the opposite side of the largest relay ( black or orange retangular box ). That will confirm the heater relay is faulty and the control either needs to be replaced or repaired if you are capable of resoldering the board. Let me know what you find and I'll try and assist you further if you require any. Thanks for visiting "fixya" today and good luck moving forward. macmarkus :)
Do you own an LG LDF6810ST dishwasher? If not, please reply with the manufacturer name, model and serial number.
Are you saying that the display that normally shows the time is displaying an code of 2H? On an LG, that means 2 Hours, (120 minutes) and is not an error code.
On an LG with a symptom like this, I would arrage to replace the main processor card (PCB). You would be getting an error message if the motor (wash or drain) had failed.
2H means 2 hours -- 120 minutes ... the display only has 2 digits so it can not display 120 minutes. When the timer gets done near an hour an one half, it will start to display a countdown somewhere near 90 (minutes)
Yes, the cycles are long on the LG LDFxxxx dishwashers, just like all water and energy conserving dishwashers.
This really is a good dishwasher, recommend you keep the rinse aid dispenser filled up and ALWAYS use a brand name powder (like Electrosol or Cascade.) Also make sure when it was installed, it was properly leveled.
Hope this helps!
The control panel needs to be replaced (indicated by the "2H" error code displayed at the start of the cycle).
BTW - The number 1 displayed at the end of the cycle indicates the cycle has timed out (i.e., it doesn't mean 1 minute remaining). Hence the continued running of the unit. Until you replace the control panel, you'll have to manually cancel the cycle at this point.