Question about Hobart Lx30h Commercial Dishwasher

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I have a hobart dishwasher lx30h thats showing code e7

It is dumping to much sanitizer the plastic pipe that is like a tee had a leak so i had to some brass pipes and fittings and make my own tee it was not sanitizing before now that i replaced the pipe its sanitizing to much

Posted by Anonymous on

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  • 43 Answers

Chemical pump malfunction or chemical run out.

Posted on Oct 18, 2016

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6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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  • 68 Answers

SOURCE: Hobart SR24C-4 Dishwasher can't drain completely

If this is a new occurance, and not "since it was installed", it may be the drain impellor. Little fins on top of the impellor sometimes get worn off. It is under the lower wash arm in the pump housing. The only trick to taking the pump apart is not loosing any of the shims.

Go to page 12.
http://www.hobartlink.com/extranet/extranetmanualsandcatalogs.nsf/860F7951C087BD7F85256D36004978EA/$File/F43078.pdf

Also, (and most likely if the unit looses water during the wash cycle), any obstruction to the drain valve can cause it to not drain proper. The drain valve uses a little flapper valve to drain the unit. It has a rubber stopper that needs to properly close. The drain valve is at the front of the unit with a red coil and white plastic body. It needs to be closely inspected. (page 22)

If this is a problem since it has been installed, it is likely due to the running of the external drain line. (Too high)

Posted on May 10, 2008

bigg t
  • 640 Answers

SOURCE: Need to hook up the small pipes for sanitazing agent

The other pipe is for detergent.Any other questions let me know i'm a hobart tech.

Posted on Apr 12, 2009

  • 109 Answers

SOURCE: I have a three year old Hobart. I am not sure

Look on the top edge of the door to find the data plate. It sounds like an SR24, if the leds are on the left of two temp gauges. If your sanitizer pump has a tired silicone tube that is flattened from use, it will not draw chemical. if you have an air bubble in the sense board at the back, it will think you have run out. If you have changed the type of chemical or diluted it, the board will need recalibrating to suit. Put some sanitizer in a small vessel with the pickup tube and monitor the amount delivered. Usually one is looking for 50 ppm solution of bleach and rinse water.( test with litmus paper) If you have an SR24H with a booster, you don't need bleach sanitizer and holding the sanitizer button will turn the sense off.

Posted on Aug 08, 2009

  • 109 Answers

SOURCE: Hobart 24 in. LXIC fails sanitizer tests.

I thought it was designed for domestic bleach at 5.25%, and looking for a solution of 50 ppm of sanitizer and rinse water. Either the elbow is blocked, or the silicone tube in the pump has collapsed. Use rubber gloves and face protection when working on chemical tubing.

Posted on Aug 13, 2009

Testimonial: "It was a collapsed tube. Thank you for your helpful insight. If you read all my comments added on July 11 you will see your answer verified."

  • 109 Answers

SOURCE: Hobart dishwasher model LX30H; displays wrench and E4.

Water is not to top sensor in alotted time.
Top sensor is in right rear corner, and is the upper of the two. Check the connector to the probe on the outside at the back. (sometimes gets wet fro vacuum breaker leaking when dirty or low flow pressure. Machine needs 20 psi flow rate

Posted on Aug 14, 2009

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1 Answer

Hobart lx30h leaking from bottom


This is a testing for the post on this web site, not a solution.

Mar 27, 2014 | Hobart Lx30h Commercial Dishwasher

1 Answer

What type of detergent is used for a lx30c hobart undercounter dishwasher


What type of detergent is not necessarily important - anything intented for use in commercial dishwashers should be sufficient. A restaurant supply store should have something suitable for you.
Also, in case you don't already know, the LX30C is the non-booster-heater version of the LX30 (LX30H has a booster heater). Without a booster heater, you'll need to use chemical sanitizer. The LX30C should, hopefully, have a sanitizer pump installed to inject chemical sanitizer into the rinsewater stream. Most of these dishwashers also have a detergent pump to inject detergent into the wash tank and rinse aid pump for chemical rinse aid.
If present, these pumps are located in the bottom of the machine. Remove the lower front panel (2 screws) and look for the small, black plastic assemblies with 2 hoses connected to each.

Mar 13, 2012 | Hobart 24 in. LXIC-5 Built-in Dishwasher

1 Answer

Hobart lx30h rinse additive is running all the


The main cause is the "anti flood" device at the bottom of the washer that detects a water leak "hose leak" etc. This device made up of a polystireen float and micro switch is a safety device and when activated puts the washer in pump out mode only. You need to look at the base of the washer and see if water leak has caused this. Rectify the cause "normaly hose or clamp" and this should clear the

Mar 21, 2010 | Hobart 29 in. AM15-1 Free-Standing...

1 Answer

Hobart dishwasher model LX30H displays -5 on


by the way you're describing the problem, i would have to say there is something wrong with your control board. part#473173 can be bought @ any hobart office in your area. dont forget to vote

Feb 07, 2010 | Hobart 24 in. LXIH-3 Built-in Dishwasher

1 Answer

Lx30h P2 ERROR CODE? WON'T DRAIN COMPLETELY - HELP


the p2 err. is on open or shorted rinse thermistor which is located on the back of the mach next to the vac. brkr. as for draining ck the drain valve for debris, and the end of the drain hose where it connects to the building drain

Dec 25, 2009 | Hobart 24 in. LXIH-3 Built-in Dishwasher

1 Answer

Hobart dishwasher model LX30H; displays wrench and E4.


Water is not to top sensor in alotted time.
Top sensor is in right rear corner, and is the upper of the two. Check the connector to the probe on the outside at the back. (sometimes gets wet fro vacuum breaker leaking when dirty or low flow pressure. Machine needs 20 psi flow rate

Dec 11, 2008 | Hobart 24 in. LXIH-3 Built-in Dishwasher

1 Answer

Hobart LX30H washing to hot.


what temp is it washing at. washing should not be the problem. This machine is designed to rinse at 180 degrees + to sanitize dishes. The machine could be converted to a chemical sanitize, it would use bleach in the rinse water instead of 180 degree water to sanitize.

Sep 04, 2008 | Hobart 24 in. LXIH-3 Built-in Dishwasher

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