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Author Topic: LG dishwasher heater not heating.  (Read 11033 times)

Offline ian_ian11

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LG dishwasher heater not heating.
« on: January 03, 2011, 03:59:58 PM »

Hello all. I have an LG LDS4821ST dishwasher that won't get the water up to its correct temperature, therefore not cleaning the dishes properly.

I have checked the heater, it has continuity, and I am getting the correct voltage to it as well. All the thermostats are in working order as well. I thought it was the board after checking everything else and I replaced that only to have it continue to not heat properly.

Any ideas?
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Offline PARTech

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Re: LG dishwasher heater not heating.
« Reply #1 on: January 03, 2011, 04:19:33 PM »
Post the model number and we can be of more help. :)  If you (turn the power off first) take the front panel off of the door. The black sound damper material on the inside of the door holds the wires and the constant opening and closing can break the wires.  From what you have described this could be your problem, but the model number would help.
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Offline ian_ian11

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Re: LG dishwasher heater not heating.
« Reply #2 on: January 03, 2011, 04:59:48 PM »
Sorry! Totally meant to leave the model! LDS4821ST is the model number.
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Offline PARTech

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Re: LG dishwasher heater not heating.
« Reply #3 on: January 03, 2011, 06:16:19 PM »
I take it from your post there are no error codes?  Do you have the part number of the board you replaced, there are two boards available for this machine.  But only if you are getting the HE error code and your inlet water temp is very hot or very cold... 
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Offline ian_ian11

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Re: LG dishwasher heater not heating.
« Reply #4 on: January 05, 2011, 11:42:24 AM »
Alright, I'm back again, this time I have the part number of the board I replaced. It was EBR33469404, the main board.
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Offline ian_ian11

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Re: LG dishwasher heater not heating.
« Reply #5 on: January 05, 2011, 02:43:00 PM »
I just checked the wires as well for a break in one of them, and there is no break. Everything is clean.

I am certainly confuzzled on this one! :P
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Offline PARTech

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Re: LG dishwasher heater not heating.
« Reply #6 on: January 06, 2011, 09:56:25 AM »
You got the new board.  Is the water coming into the machine excessivly hot or cold (below 50 F or above 160 F)?
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Offline marcusmrd

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Re: LG dishwasher heater not heating.
« Reply #7 on: November 03, 2014, 10:34:05 AM »
This thread is totally useless because the reason why there is not hot water is because there is no element to heat up the water.
It relies on the hot water tanks' water temperature to even dissolve the soap but as the reduced amount of water gets in the cold aluminum interior and cold dishes, the water, guess what... gets COLD!!!
A stupid system that is supposed to reduce power needs for the machine (Energy Star garbage) but you'll have to clean it twice for a decent result!
Two advices : DO NOT BUY EnergyStar products, and stay away from aluminum interior machines.
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Offline domain

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Re: LG dishwasher heater not heating.
« Reply #8 on: November 06, 2014, 06:02:03 PM »
Quote from: marcusmrd on November 03, 2014, 10:34:05 AM
This thread is totally useless because the reason why there is not hot water is because there is no element to heat up the water.
It relies on the hot water tanks' water temperature to even dissolve the soap but as the reduced amount of water gets in the cold aluminum interior and cold dishes, the water, guess what... gets COLD!!!
A stupid system that is supposed to reduce power needs for the machine (Energy Star garbage) but you'll have to clean it twice for a decent result!
Two advices : DO NOT BUY EnergyStar products, and stay away from aluminum interior machines.

Every lg I've seen uses an element and I can assure you the tubs are not aluminum. Go home silly.  :P
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