Question about Hobart Lx30h Commercial Dishwasher

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I purchased a used Hobart LX30 (silly me). The temp reaches 160, but there is no READY light, or error message. I pressed WASH, but nothing happens. Any advice? FYI - new 30 amp breaker installed.

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6 Suggested Answers

6ya6ya
  • 2 Answers

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 lx30 : rinse cycle

The rinse water in a LX30 is driven by water pressure. A solenoid valve, bottom front - gold body, opens up and allows the water to flow.

If you are referring to the rinse agent pump, there must be NO leaks in the tubing or the hose that runs through the pump. And if the unit has lost its prime, using your hand to "seal" it, and forcing water from the faucet into the line can prime it.

Good luck - Mike

Posted on May 13, 2008

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kermit854
  • 38 Answers

SOURCE: hobart lx30 E3 error

Error Code E3 relates to a problem with the fill. Specifically that the water level has not been recognized at the middle water sensor. This can be caused by a problem with the drain system as you describe, or by low water pressure to the machine (should be 15-25psi flow), or bad wire connection to this middle sensor.
Check for proper water pressure first (should be a gauge on the machine) during the fill. Then check / repair drain as needed. These will probably eliminate the problem

Posted on Aug 19, 2008

  • 109 Answers

SOURCE: E-2 Error on LX30 Hobart Dishwasher

E-2 error is a fill problem. Water did not reach the lower probe within the time out. (innitial fill only
1- Is the bottom probe clean?
2- No fill water (check valve, hose,fill screen in end of hose, and fill source.)
3- low water pressure, should be 20 PSI flow.
4- Fuse 1FU blown.
5- Check wiring to fill valve.
6- Check relay board function.

Posted on Aug 08, 2009

  • 10 Answers

SOURCE: Hobart sr24h dishwasher won't get up to temp.

the water level is low (should cover the bottom of the tank about a 1/4")and the pump is starving - therefor probably not washing very well.

three things to check

1. check braided fill hose for kinks (you will have to pull the machine out if under a counter). run the machine while pulled out if possible to ensure its not kinking when you push it in.

2. pressure reducing valve-prv (if installed) on the incomming water line before the braided hose (probably under a sink). turn the screw on top clockwise to increse pressure.
TURN THE BREAKER OFF TO DO THE FOLLOWING!!
3. flow regulator (if installed) - installed under the bottom pannel at the end of the braided fill hose (about 2" long and silver). turn off water. you can simply remove it, drill out the centre or just remove the rubber peice inside.

inrease the temp by adjusting the thermostat on the right side under the bottom pannel in front of the booster.(dail is hard to see and breaker must be turned off)

remember - the machine must be turned on for several minuets to truly get up to temp.

Posted on Aug 21, 2009

  • 6 Answers

SOURCE: Hobart LX30

Hopefully you took the suggestion to run the correct 50 amp 208-240 service to the unit.

Converting the unit to an LX30C has a couple of pitfalls. The LX30C is connected directly to the incoming water supply, which should run 120-140 degrees. By reprogramming the unit as an LX30C, the booster would be disabled, which would mean the incoming water would flow through the de-energized booster and be cooling off while it sits in there between cycles and when the unit is shut down.

The incoming fill plumbing (5/8" heater hose) would have to reconnected from the fill solenoid valve directly to the vacuum breaker on the rear of the unit to bypass the booster heater.

On the 208-240 volt LX18/30/40's, the pump motor, booster heater, and sump heater run on 208-240. To convert it to 120 volts you would have to replace the sump heater and reconfigure the motor wiring in the motor junction box.

By the time this is all done, you've downgraded a great machine, confused the next service guy, and have to deal with nasty chlorine and all of it's headaches.

I

Posted on Sep 12, 2009

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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

2 Answers

P1 error code on LX30 Hobart


This is a bad sump temperature probe. The unit will function, but will not heat nor display the wash water temperature.

This is a very easy fix. Order Hobart part number 328994 from your nearest Hobart parts dept.

Turn off and drain the unit. Kill the power to the unit at the circuit breaker. Remove the lower front cover. Locate the screw-in temperature probe at the front of the sump. Unplug the sensor from the wiring harness, remove with a 7/16" open end wrench. Screw in the new probe, using teflon tape of the threads, snuggly. It does not need to be super tight. Plug it into the harness, reinstall the front cover, turn the breaker back on, and start up the unit.

TURN THE BREAKER OFF AS EVEN WITH THE UNIT "OFF" THERE WILL BE 120 VOLTS PRESENT AT THE SUMP HEATER (yellow wires) DUE TO ONLY ONE LEG OF POWER BEING SWITCHED OFF!

Sep 04, 2009 | Hobart 24 in. LXIH-3 Built-in Dishwasher

3 Answers

Leaks water from bottom of door. Error code E7 ?


I found this and it also may have to do with the door seals...how old is the unit...if door seals get old and stiff..(not soft and pliable) they sometimes leak...after usage the heat and moisture may cause them to swell and or become soft thereby sealing better...but this is what I found in the user manual.

Machine displays "E7" on LX30 model or "CLEAN PROBE" on LX40 model.
1. Clean water sensors inside tank.
It suggests contacting Hobart if this fails but I also found this problem is associated with fill issues...as in an E4 error...this what you do in that case....

Machine won't fill or won't fill high enough(LX18, LX30 display shows "E0," "E2," "E3," or "E4")

1.Low water pressure — check for clogged hose strainer; check that site water pressure meets minimum flow pressures.
2.Make sure probes are clean.
3.No water pressure — main water supply valves may not be working.
4.Drain valve open - turn machine off to drain machine, then on. Repeat twice (this assists in clearing any drain valve obstructions). Wait for machine to reach READY mode and press WASH. Slowly open door several seconds later and note water level. Close door; 30 seconds later, open door slowly and check that water level is the same as it was. If not, repeat the
OFF-ON procedure.
5. Delime machine.

Good Luck and I hope this helps...let me know if it doesn't and i am sure I can get to the bottom of it...thanks for rating my effort...the Fang.

May 19, 2009 | Hobart 24 in. LXIH-3 Built-in Dishwasher

1 Answer

E4 error after attempting to fill and get to temp


This is what I found for the E4 code...hope this helps...and thanks for rating my effort...The Fang.


Machine won't fill or won't fill high enough(LX18, LX30 display shows "E0," "E2," "E3," or "E4")

1.Low water pressure — check for clogged hose strainer; check that site water pressure meets minimum flow pressures.
2.Make sure probes are clean.
3.No water pressure — main water supply valves may not be working.
4.Drain valve open - turn machine off to drain machine, then on. Repeat twice (this assists in clearing any drain valve obstructions). Wait for machine to reach READY mode and press WASH. Slowly open door several seconds later and note water level. Close door; 30 seconds later, open door slowly and check that water level is the same as it was. If not, repeat the
OFF-ON procedure.
5. Delime machine.

Apr 28, 2009 | Hobart 24 in. LXIH-3 Built-in Dishwasher

2 Answers

Hobart LX15H indicates E4 and will not fill.


This is what I found in the manual...and on a couple of other sites....

Machine won't fill or won't fill high enough(LX18, LX30 display shows "E0," "E2," "E3," or "E4")

1.Low water pressure — check for clogged hose strainer; check that site water pressure meets minimum flow pressures.
2.Make sure probes are clean.
3.No water pressure — main water supply valves may not be working.
4.Drain valve open - turn machine off to drain machine, then on. Repeat twice (this assists in clearing any drain valve obstructions). Wait for machine to reach READY mode and press WASH. Slowly open door several seconds later and note water level. Close door; 30 seconds later, open door slowly and check that water level is the same as it was. If not, repeat the
OFF-ON procedure.
5. Delime machine.

If this doesn't help let me know and I will get to the bottom of it....good luck and thanks for rating my effort...The Fang.

Apr 27, 2009 | Hobart 24 in. LXIH-3 Built-in Dishwasher

1 Answer

E-2 Error on LX30 Hobart Dishwasher


E-2 error is a fill problem. Water did not reach the lower probe within the time out. (innitial fill only
1- Is the bottom probe clean?
2- No fill water (check valve, hose,fill screen in end of hose, and fill source.)
3- low water pressure, should be 20 PSI flow.
4- Fuse 1FU blown.
5- Check wiring to fill valve.
6- Check relay board function.

Feb 15, 2009 | Hobart 24 in. LXIH-3 Built-in Dishwasher

1 Answer

Detergent error


I'm a hobart tech---been away for awhile.What is the model lxih,lx30?Let me know if you still have a problem with it.

Jan 02, 2009 | Hobart 24 in. LXIC-5 Built-in Dishwasher

3 Answers

Hobart LX 30 P2 Error and unit overflowing!


Hi drogers77,

I'm not a Hobart technician, but here what I founded in my manual for the LX30 error message:

LX18 / LX30 display shows E0, E2, E3 or E4

1. Low water pressure - check for clogged hose strainer; check that site water pressure meets minimum flow pressures.

2. Make sure probes are clean

3. No water pressure - main water supply valves may not be working

4. Drain valve open - turn machine OFF to drain machine, then ON. Repeat twice (this assists in clearing any drain valve obstructions). Wait for machine to reach READY mode and press WASH. Slowly open door several seconds later and note water level. Close door; 30 seconds later, open door slowly and check that water level is the same as it was. If not, repeat the OFF-ON procedure. If problem persists, call your local Hobart Service Office.

5. Delime machine.

Hope it will help you.

pepsicrazy

Dec 27, 2008 | Hobart 24 in. LXIH-3 Built-in Dishwasher

1 Answer

Tank temp


check to see if your element is scaled up or your element may be damaged

Nov 21, 2008 | Hobart AM15T Dishwasher

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