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Zwc28 1mf2k31 poor flame

9 yr old and runs on propane, only reaches 40 degrees temperature unless on slow trickle on tap. Then can eventually make 60. Flame seems too weak. Have just changed external regulator without any improvement. Have tested temperature mainly at sink near boiler. Effects upstairs in the bathroom even worse. Seems to have got worse over last 2 years. Spanish technician says there is nothing wrong with it!

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  • Water Heaters Master
  • 2,514 Answers

Check in coming water flow . Check water flow at heater maybe blocked inside reduced flow .

Posted on Aug 01, 2017

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6 Suggested Answers

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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  • 17 Answers

SOURCE: Ariston Combi euro boiler SX20 MFFICE 970903039 GC No 4711602

have you tried to put some cleaner into the system it siounds like you may have a circulation problem

Posted on Nov 27, 2008

  • 68 Answers

SOURCE: boiler keeps losing pressure when the heatings off

Hi Leehardcast,

Yes the problems are related. The system is low on water. So now instead of water you have air in radiators which is easily compressed when it heats up. Then pressure loss when it cools down.

Add some water to your system until you have 15lb pressure and bleed out upstairs radiators at the same time.

Please rate this response and Good luck, Phil

Posted on Jan 14, 2009

  • 9 Answers

SOURCE: Halstead boiler reluctant to stay on

next time it turns off let it cool and clean with a cotton swab with rubbing alcohol after brushing.

Posted on Sep 08, 2009

mrhotandcold
  • 248 Answers

SOURCE: Vaillant ecoMAX 828/2boiler goes on & off when running hot water!

water must be set at 3lts a min ,check diaphragm valve move when hot tap is on, check microswitch ,best of luck

Posted on Oct 12, 2009

  • 78 Answers

SOURCE: Model 22V40F1 40-gals unit. Pilot lights up OK but won't stay lit

change the thermcouple

Posted on Feb 17, 2010

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1 Answer

Digital control keep flushing error3


boiler not getting up to temperature fast enough. If it is an electric boiler, there is a problem with the heating element. If it is oil o rgas fired, you do not have a flame or the boiler temperature is not reaching 180 degrees F.

Mar 19, 2015 | Amtrol Water Heaters

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Water only stays hot for about 5 min or


Gas or electric?
Electric water heater ... then test for crossover, check for water leak, replace thermostats, test elements
Gas water heater ... test for crossover, check for water leak
http://waterheatertimer.org/Crossover.html

http://waterheatertimer.org/How-to-replace-thermostat-on-electric-water-heater.html


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water leak: turn off all taps and put ear against pipe and listen for water leak... check if water meter advances when all water taps are off.

Gene

Oct 09, 2014 | Water Heaters

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Why does the flame shut off before a hot to warm temperature can be achieved


I would question the Thermo couple. It pretty much runs the whole show. Inexpensive quick fix. It's the small tubing that is connected to the gas valve. The other end is a bulb that sits over the pilot flame.. Remove the old and match it up at the hardware store. Install new coupler ensuring bulb is directly over the pilot flame Common iten. The thermocoupler alks to the gas valve. If the pilot flame extinguishes (goes out) the bulb cools and shuts down the gas valve so the pilot gas feed doesn't permit raw gas to accumulate, avoiding the need emergency Services. . You will not get the heater to fire until the bulb is good and hot. The red push button ,when depressed will allow the pilot flame to be lit. Hold it down until the heater fires, indicating the T-coupler has reached its operating temp.Good Luck-Ned

Sep 10, 2014 | Bosch AquaStar Indoor Natural Gas Tankless...

1 Answer

I have a vaillant eco pro 28 combi boiler. no constant hot water unless tap is on really low.


Oh some of these there was a small black heatexchanger just for hot water they some times block up . or it could be a blockage in the water section where it flows in .I know Valliant have a very good tech line and fitters who do house calls .

Mar 02, 2017 | Water Heaters

1 Answer

GCV 40 100 Burner and pilot shuts off when heating up


Get more fresh air to the unit.
Clean the air intake/ flame trap/ flame arrestor located on bottom of tank.
http://waterheatertimer.org/images/Flame-trap-inspection-325.jpg

Post question on pro water heater forum.
http://www.thetankatwaterheaterrescue.com/forums/forum3/

Add a comment with type of gas control valve, for possible troubleshoot.
Copy following link to read service manual by type of gas control valve:
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#intellivent

Aug 17, 2012 | A.O. Smith GCV-40 Promax Residential Water...

1 Answer

Replaced both elements and tstats now there is 240 at both elements at once and only the top one is heating the bottom is coldreplaced bottom sgain thinking maybe bad from factory but still cold will i...


Electric water heaters never power BOTH the upper and lower elements at the same time.

If the water in the tank is cold, either the top OR bottom element will be powered through the upper thermostat (t-stat), never both at the same time. The upper t-stat will send power to the upper element until the temperature of the water in the top of the tank reaches the set point of the t-stat say 140 degrees. When the water temperature in the top of the tank reaches 140 degrees, the t-stat is "satisfied" and disconnects the power from the top element and sends it to the lower t-stat.

IF the temperature of the water in the lower half of the tank is lower than the set point of the lower t-stat, the t-stat closes to send power to the lower element. The lower element REMAINS powered by the t-stat until EITHER the water in the lower part of the tank reaches the set point temperature of the lower t-stat again, say 140 degrees; OR the temperature of the water in the upper part of the tank drops, at which point the upper t-stat "calls" and switches the power away from the lower t-stat and sends it to the upper heating element instead. When the top t-stat is satisfied, it switches power back to the lower t-stat. The process will continue back and forth for as long as needed to bring the temperature of the water in both halves of the tank to 140 degrees.

You must wait until the top of the tank is heated - before the lower element will be powered to heat the water.

I hope this helps you understand how the switching happens in these water heaters. Good luck! Please rate my reply. Thank you.

Mar 24, 2011 | Rheem 40 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

My Reliance 606 40 gallon water heater only heats up enough hot water to fill a bathtub. We've drained it, the pilot light is fine, it heats up the water really hot, but it just doesn't seem to be able to...


How big is your bathtub? Is your water heater set on the hottest setting? What is the temperature of the hot water at the tap?

Keep in mind that hot water can cause severe burns. Children and those with diminished mental capacity can be seriously harmed by hot water.

The "40 Gallon" rating on the water heater is usually the amount of hot water the unit can produce in one hour. So the tank, and the amount of immediately available hot water, might be smaller than 40 gallons.

My bathtub is 2 feet wide by 1 foot deep and 4 feet long. This is 8 cubic feet or almost 60 gallons. So a 40 gallons of water at 120 degrees, mixed with 20 gallons of cold water (60 degrees), fills the tub with 100 degree water. My January cold water is 42 degrees, so it will take 40 gallons at 129 degrees to fill the tub. If the tub is cold to start it will take even hotter water.

So the water heater might be just fine.

Possible solutions:
1. turn the temperature up on your water heater- or the temperature control could be malfunctioning and not getting the water hot enough.
2. insulate your hot water pipes so that the water loses less heat on the way to the tub.
3. bigger water heater.
4. smaller bathtub, or less full bathtub.


Jan 04, 2010 | RELIANCE ELECTRIC WATER HEATER

2 Answers

PILOT LIGHTING BUT CANNOT TURN ON WITOUT IT GOING OUT


change the gas valve, if the thermocoupling works and the piliot stays lit then it has to be the gas valve check to make sure the screen is clear also,, you said it's propane, check to make sure it is all the way turned on, and has the right pressure it might have a bad regulator on it, but will let other things in the house run good luck

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Heil heater starts/stops before reaching temp


is installed in a vertical up flow or horizontal position , if in horz position you could have a bad or miss positioned roll out switch this is a thermal switch positioned toward the burner edge that if the flame rolls out of burner area trips and then resets as it cools allowing the furnace to re-start until it reaches temperature , something to check .

Dec 08, 2008 | Water Heaters

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Pilot lights (not always) but gas will not flow into burner


First Clean the ignitor assembly and make sure the flame is reaching the flame sensor strongly.

You may need to replace the flame sensor.

Sep 19, 2008 | Bosch 1600H-LP Liquid Propane AquaStar...

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