Question about Hobart AM15T Dishwasher

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When are AM-14 tank heaters energized?

Just finished electrical installation for AM-14 for a customer, who purchased the dishwasher at an auction. It didn't come with a booster heater or gas heater. I've downloaded the operating instructions, but haven't found an answer to this question: the tank heaters are energized during the wash cycle (and maybe during the rinse cycle too--didn't check) but at no other time. Is this the normal operation? It would seem that if this is correct, then there wouldn't be much of an opportunity to raise the water temperature since the cycles are so short.
I would have expected the tank heaters to be energized as long as the tank water level was correct and the water temperature was below the setting. I'd be grateful for any thoughts, and thanks!...........Lee

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When the float lifts in the wash tank, and the power is on, there is a few seconds delay before 2 con energises the wash tank heater. I is not dependant of the cycle, or if the door is open or not. If you open the control box door, you can monitor the wash heat led and 2 con. If you want to adjust the set point, the old boards have a heat sink in the middle, hold the yellow button near the top and adjust the trim poy on the board while observing the display. There should be a schematic attached to the waterproof barrier in the control box.

Posted on Aug 14, 2009

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Lee,goto your other post and i posted some solutions.Bigg T

Posted on Mar 02, 2009

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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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1 Answer

My dishwasher is always hot like it has just finished a cycle however has not been turned on to wash. What could be causing this?


Is the heating element in the bottom warm/hot to touch. If it is you possibly have a stuck heater relay on your control board. I would remove power via the breaker or fuse, leave off for about 10 minutes, re energize and see if the situation has corrected if it has not you may need a new control.

Dec 06, 2016 | Dishwashers

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Dishwasher not finishing cycle


A10 4 + 6 Heating circuit Heating element, connections, module,
relay, pressure switch

A10 Open circuit in heating circuit.
• Check the circuit of the heating element (26 ohms).
• Check for an open circuit heater cut-out.
• Check pressure switch open circuit (connections 11-14).
• Check wiring and connections between module card, pressure switch and heater.
• If all above is OK, replace module card.

Sep 18, 2014 | Hotpoint 24 in. FDW60 Free-standing...

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My family is moving in...how do i increase hot water availability?


large water heater, turn p the themo stat to a higher setting ( watch for burns with young childern and older folks)

or the best install a tempering valve. this valve mixs hot water with cold water before it goes into the building.

Again if you have young ones or old people they can burn faster than any other group.the best is a larger heater for the DIY person.

Thanks Tom

Sep 13, 2011 | Rheem Water Heaters

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Rheem water heater model #82V661 serial # RH0106D11663 leaking water at lower panel. Water is coming from above wiring and control panel. Is this fixable or need to be replaced? Mfg date is 01/2006


You have 240volt electric water heater
Check both elements for leaking.
Check top of tank for leaking pipes.

If water heater is leaking from side of tank, then tank is rusted out and could rupture.
This tank must be replaced.
http://waterheatertimer.org/Water-at-bottom-of-water-heater.html

My friend welded his tank to get more life out of tank, but he assumed the risk.

Hot water heaters are under pressure from heated water which expands.
If tank ruptures, water will flood out of tank and water will run until shut-off is turned OFF.
This causes major damage inside home.

Protect yourself first, and then let's talk more.
1) Turn off water at shut off located on cold water line above tank.
2) Turn off power to water heater:
Gas heater, rotate valve to 'pilot' so pilot is lit but burner does not turn ON.
Electric heater, turn off circuit breaker.
3) Open tub spout on hot side and let run a bit to relieve pressure.
4) Now your property is safe.

You can limp along with failed heater if leak is slow.
Turn heater ON when you need hot water.
Typical Gas heater makes 41 gallons hot water per hour.
Typical Electric heater makes 21 gallons hot water.
Shower uses 5-9 gallons hot water, bath uses 12-14 gallons hot water.
http://waterheatertimer.org/images/Water-heater-reference-guide-2.jpg

If you are going to install heater yourself:
Look at label on side of old tank to identify size and particulars.
I buy ordinary heaters from Lowes and Home Depot and always buy scratch-n-dent models when possible, because superficial damage to outer tank does not lower lifespan of heaters I have installed.
Buy same size heater if it worked fine before.
Buy new flexible water connectors.
Set water heater in drip pan.
Offer 10% less than price shown. Make them deal with you. Shop Ace hardware, Lowes, Home Depot. Kick the tires since you have a bit of time.

I know you have electric heater, but many folks read these answers, so I include info on gas too.
#1 rule) tankless heaters are a rich-man's toy, because tankless will never pay you back, and will become major money pit if you encounter 1 repair. Electric tankless heaters require larger electric service box. Gas tankless require larger gas line (larger gas line, more gas consumption, bigger bill unless you cut consumption)
2) How to install gas heater:
http://waterheatertimer.org/How-to-replace-gas-water-heater.html
3) How to install electric heater:
Read link above because many of same steps apply to electric.
The difference with electric, is turn off power, disconnect wires, and reconnect wires exactly like before. Set electric heater directly on insulated surface like dense blue styrafoam. Cut styrafoam in circle so it fits inside dip pan. Wrap entire electric heater with insulation blanket, except don't cover TP valve.
4) Connect bare copper jumper wire between hot and cold pipes to prevent stray current corrosion which will shorten life of tank. Make sure cold water line is grounded.

Also read:
http://waterheatertimer.org/9-ways-to-save-with-water-heater.html

Add a comment for more free assistance.
Also take advantage of fixya phone service.
For a price, fixya expert speaks to you via phone about any do-it-yourself problem.

Jan 07, 2011 | Rheem Water Heaters

2 Answers

Seems as though there is a whole in the tank causing wter to spew out, The whole is yhe top of the tank and appears to be very small, can this be patched or soldered?


If water heater has a hole, then water heater is rusted out and must be replaced.
http://waterheatertimer.org/Water-at-bottom-of-water-heater.html

Immediate problem is ruptured tank.
Water heaters are under pressure, and rusted water heaters rupture and water runs until water is shut off.
This causes major damage inside home.

Protect yourself first, and then let's talk more.
1) Turn off water at shut off located on cold water line above tank.
2) Turn off power to water heater:
Gas heater, rotate valve to 'pilot' so pilot is lit but burner does not turn ON.
Electric heater, turn off circuit breaker.
3) Open tub spout on hot side and let run a bit to relieve pressure.
4) Now your property is safe.

You can limp along with failed heater if leak is slow.
Turn heater ON when you need hot water.
Typical Gas heater makes 41 gallons hot water per hour.
Typical Electric heater makes 21 gallons hot water.
Shower uses 5-9 gallons hot water, bath uses 12-14 gallons hot water.

If you are going to install heater yourself:
Look at label on side of old tank to identify size and particulars.
I buy ordinary heaters from Lowes and Home Depot and always look at scratch-n-dent models.
Buy same size heater if it worked fine before.
Buy new flexible water connectors.
Set water heater in drip pan.
Offer 10% less than price shown.

#1 rule) tankless heaters are a rich-man's toy, because tankless will never pay you back, and will become major money pit with 1 repair.
2) How to install gas heater:
http://waterheatertimer.org/How-to-replace-gas-water-heater.html
3) How to install electric heater:
Read link above because many of same steps apply to electric.
The difference with electric, is turn off power, disconnect wires, and reconnect wires exactly like before. Set electric heater directly on insulated surface like dense blue styrafoam. Cut styrafoam in a circle so it fits inside dip pan.

Also read:
http://waterheatertimer.org/9-ways-to-save-with-water-heater.html

Add a comment for more free assistance.
Also take advantage of fixya phone service.
For a price, fixya expert speaks to you via phone about any do-it-yourself problem.

Jan 01, 2011 | Water Heaters

2 Answers

Hobart AM-14 water temperature not maintained


Hobart AM-14 will wash and rinse in manual, but not in automatic

Oct 01, 2009 | Hobart AM14-253 Free-standing Dishwasher

1 Answer

AM14 tank heaters--when are they energized?


How hot is the wash temp?It should be 150-165 degrees.The model is an am14 not an am15?I'm hobart tech and repair these units weekly.Let ne know.

Feb 26, 2009 | Hobart AM14-253 Free-standing Dishwasher

1 Answer

Verifying breaker rating of AM-14


Commercial dishwashers don't take it for granted that the hot water is hot enough to sanitize. And, they know restaurants need to turn dishes.

So there is enough heat to make sure warm water heats up quickly to sanitizing temperatures.

Jan 29, 2009 | Hobart AM14-253 Free-standing Dishwasher

1 Answer

20 lb tanks


Yes you can use a 20lb tank to run the heater. I purchased a adaptor hose it hand screws into heater & screws onto tank works fine. Bought the adaptor hose at HD.

Custom Contractor

Jan 01, 2009 | Dyna-Glo Double Tag-a-long Heater

2 Answers

On-Demand Water Heater


An on-demand, or tankless, water heater is a system for heating water as it passes through the pipes, usually very near the point of use. Traditional tank water heaters bring the water to approximately 140 degrees Fahrenheit (60 C), in order to ensure the water supply lasts long after the heater turns off. Since this is obviously far too hot to be pumped out of a shower of faucet, cold water is added to the mix in the pipes. Coupled with the loss of thermal energy over time, the average tank heater has an efficiency of approximately 80%. On-demand water heaters have a number of advantages over their tank-using counterparts. While tanks often degrade over time and begin leaking, the apparatus used in an on-demand water heater is much less susceptible to the burdens of age, and will often outlive the house they're installed in. The amount of energy used is a fraction of that used in a tank water heater, due to increased efficiency and a much smaller window during which a heating source is in use. While tank hot water heaters can, and often do, run out of hot water after a number of showers, on-demand heaters provide a never-ending supply of hot water, ensuring that warm water is always available when needed. A tankless water heater can cost between $500 and $1500, and they most commonly use either electric or natural gas energy to heat the water. Most mid-sized households report an energy savings of approximately 25-45% for a gas or propane heater, and up to 50% with an electric heater, over using traditional tank heaters. Water is usually set to a maximum temperature of 120 degrees Fahrenheit (49 C), though many heaters allow for custom setting of the maximum temperature via remote control. Outflow rates range from 8-14 gallons (30-53 litres) per minute. Installation for most tankless water heaters is incredibly easy, involving simple plumbing. In the case of electric heaters, all that is required for a fuel source is to plug the heater into an outlet and begin heating your water. Some modern on-demand water heaters can incorporate a solar preheating system. This system uses a traditional solar heating system and tank to bring the water nearer to the desired temperature, saving substantial energy use in the final on-demand heating. A solar preheating system costs between $500 and $800.

Aug 27, 2008 | Stiebel Eltron CK20E Electric Tankless...

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