Question about Heating & Cooling

1 Answer

Heater comes on but when it reaches themp on thermostat wont come on when calling for heat again

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Heating & Co... Master
  • 3,182 Answers

Try cleaning the flame sensor

Posted on Dec 05, 2016


1 Suggested Answer

  • 2 Answers

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

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Dometic thermostat turns off and comes back on by itself Dometic thermostat model 3314080

Most thermostats operate this way.
Instead of dropping the voltage a thermostat opens the circuit when the set temperature is reached, after which it closes again to redo the cycle again. The principle can be based on heat, time or pressure.
The animation, if the GIF runs, shows the basic principle for a thermostat switch in a heater/geyser, but can be modified to operate via a pressure diaphragm as used in ovens and fridge compressor relays. Strip heats/opens then closes.

Dec 24, 2017 | Dometic Heating & Cooling

1 Answer

The heater does not stay on long enough to heat my garage. it will come on for 3 to 5 minutes and shut off. it comes on again in 5 to 10 minutes for 3 to 5 minutes again. the heat is good when it runs....

You could tripping the high temp limit this will be located near the heat exchanger When it shuts how long does the blower motor stay running? Do you have a meter?

Dec 15, 2010 | Fahrenheat FUH5-4 Heater

1 Answer

What is the energy factor for the mod.82V80-2? I have two seperate 30amp circuits, one for the top element and one for the bottom element, if that changes anything.

82V80-2 Energy factor is .86 according to water heater industry self-regulated standards.

Rheem pdf says these water heaters are wired for non-simultaneous operation.
Except special order water heaters.
Non-simultaneous operation uses single 240V circuit as described below.
If your water heater is wired for simultaneous operation, and each element is on a separate circuit, that makes your water heater special order. I would guess the reason is for higher first-hour delivery, which implies rapid heating and would likely affect energy factor.
You might want to get serial number off model and call Rheem for specs on that special order.

Your water heater energy factor may be the same because 'energy efficiency is based on the amount of hot water produced per unit of fuel consumed over a typical day.' This means an aircraft carrier can be considered highly efficient despite overall cost. And naturally the guys making the aircraft carrier are also doing the rating.

Non simultaneous operation means the upper thermostat controls heating functions.
240V goes to upper thermostat first.
When water inside tank is cold, thermostat reads temperature through tank wall.
Upper thermostat turns on upper element until top 2/3 of tank reaches thermostat set point.
Once set point is reached, upper thermostat turns off upper element and sends power to lower thermostat and lower element.
Lower thermostat reads temperature through tank wall, and turns on lower element until bottom 1/3 of tank reaches thermostat set point.
As water cools inside tank, lower thermostat is first to respond since hot water rises.
Lower thermostat turns on lower element until tank again reaches set point.
When hot water faucet is turned on, hot water exits top of tank.
At same time, cold water enters bottom of tank through the dip tube.
The heating cycle repeats.
At all times, the electricity flows through upper thermostat. And upper thermostat is powered by one 240V circuit.

With simultaneous operation, the upper and lower thermostats work in same manner.
Except thermostats are wired separately.
Lower thermostat does not wait for upper part of tank to be heated first.
Lower thermostat turns on whenever lower part of tank cools.
The advantage is more hot water available rapidly when demand is high. This is called first hour recovery.

One method for reducing electric consumption is to set lower thermostat so it only turns on during certain times of day. For example Whirlpool Energy Smart operates in this manner and shaves a few bucks off the bill each month. This says that simultaneous operation is not an energy saver, unless that circuit controlling lower thermostat is set on a timer.

Dec 06, 2010 | Rheem 80 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

Gas Furnace trouble

the thermostat sends a signal to the circuit board. Not knowing anymore than I do about your heater or furnace I would suggest that that is a good place to start. Any limit or safety switch wouldnt coincidentally shut off the heater when it reached the set temp.

Jan 09, 2010 | Heating & Cooling

1 Answer

Burner clicking on and off rapidly when reaching restart temp.

the gas orifices may be plugged try to poke them out with a fine wire . shyt off power and gas before cleaning as you don't want to be burned

Dec 13, 2009 | Heating & Cooling

1 Answer

Gas heater shuts off & won't come back on

sounds like the thermostat replaceing it should help you could try cleaning the old one they can get dust it them

Feb 25, 2009 | Honeywell CT87B ROUND HEATING&COOLING...

1 Answer

Heater prblems

make sure the coolant in radiator is full to level and if thats o.k. you need to replace the thermostat since the engine does not reach operating themp.

Jan 22, 2009 | 2002 Jeep Liberty

1 Answer

Dayton 3E227A Heating Cycle

The sensor for the thermostat is probably going bad or has bad connections. It is (or thinks it is) heating up fast and therefore shuts of the heater.

Dec 30, 2007 | Dayton (3E386) Heater

Not finding what you are looking for?
Heating & Cooling Logo

Related Topics:

30 people viewed this question

Ask a Question

Usually answered in minutes!

Top Heating & Cooling Experts

Paul Carew

Level 3 Expert

3182 Answers

Dan Webster
Dan Webster

Level 3 Expert

8220 Answers

Tim Whalen

Level 3 Expert

3074 Answers

Are you a Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides