Ask A Question
HVAC Questions? Ask an HVAC Expert for Answers ASAP
Water Heater Problems
What is a water heater?
The a domestic water heater is a device for heating and storing water that comes from a municipal supply or underground source to provide hot water to bathrooms, kitchens, pools etc. Water heaters come in a variety of models and use different power sources. Some water heaters only heat water when needed and do not have storage tanks. These are called tankless water heaters. Because of the different types, capacities and complexities involved in different water heaters, troubleshooting questions can arise when a person encounters problems while using a water heater. Below are answers from Experts to some of the commonly asked questions about water heater problems and troubleshooting.
What does the “ROL” error code mean in a Rheem Raypack pool heater and how can it be fixed?
Case Details: The water heater is not working.
The ROL error code means the roll out switch needs attention. This is a manual reset switch that is placed outside the burners, possibly on the left side. There will be a red button on top that needs to be pressed for resetting it. If the error code still appears, check to see if the flame is not rolling out and causing the switch to trip. If this is the case, the burners may have debris buildup and need cleaning. If there is no roll out problem, the switch may be bad and need replacing.
How to troubleshoot a leak at the top of an electric water heater near the water connection to the tank?
If the leak is at the fitting, the fix could be quite simple. Turn off the power and shut off the water supply. Release pressure from the pop off valve. If there is any insulation around the connection, peel it off and then tighten the fitting. Once this is done turn on the water, wait till the water runs out of the pop off valve and then shut it. Turn on the power and the heater and see of the leak has stopped. If it is still continuing, it may be coming from the tank itself in which case you should get a technician to check it.
How to troubleshoot a water heater that produces cold water when the faucet is turned on and returns to 120 degrees F when the faucet is turned off?
Case Details: Make and model - Rheem tankless water heater model ECO-180XN. Error code displayed: P1 when faucet is turned on
This is a fairly common tankless water heater problem. The P1 error indicates inadequate water flow which is not enough to turn the unit on. If you have multiple faucets connected turn them on and see if the water is now hot. If this resolves the problem, check for blocked strainers incoming and also at the sinks. The unit requires 0.66 gallons per minute flow to work and if the flow is less than that it will shut off and give the error code. If there is a regulator, adjusting it to increase the pressure can also help to prevent this problem for recurring.
What could be the problem if the fan on my water heater start, the burner ignite and then both go off after a couple of seconds?
Case Details: It is a State gas water heater with a power vent. The cycle of turning on and off repeats twice more and then it stops trying. When I switch off and turn it on again, the same thing happens.
It sounds as if the flame sensor is the problem – it could be defective, grounded out or dirty. If you are comfortable with going into the chamber you can try cleaning it yourself. Your model probably has a pilot that ignites with an arc from an electrode. The flame sensor is typically in the electrode with the pilot flame. Clean it off with fine sand paper but be careful not to move it out of position. Once it is clean, vacuum out all the debris Check to see if all the electric connections to the sensor are okay. If this does not work, the sensor probably needs replacement but you will likely need to replace the whole burner assembly as you won’t be able to buy just the sensor.
What could be the problem if water heater does not heat the water?
Case Details: Make - Whirlpool. The pilot light comes on but it goes out as soon as I let go of the igniter button.
This could be a thermocouple problem and not a loose connection, if this is the case, the thermocouple will need to be replaced. The cost will depend on the style. If it is one of the older units a simple replacement thermocouple could cost around $10. If it is the new sealed combustion system, you will need a special pilot assembly that could cost in the range of $60. Most hardware stores stock both.
A water heater is essential to the smooth and comfortable running of a home, especially in winter. Because of the electric or gas power source and the fact that you are dealing with hot water, care must be exercised when tackling water heater issues. Always follow the advice given in your owner’s manual when dealing with water heater problems. If the manual does not deal with the problem you are facing, getting Expert advice is the best option.
Recent Water Heater Questions
Yes I thank you, I am replacing my heating system and thermostats
Yes I thank you, I am replacing my heating system and thermostats that I want to use are the Honeywell T8775A. I find a resistor in the box but for my application It says I do not use them . I have a high efficiency boiler and taco SR506 Switching Relay control. the thermostats do not light up and do not turn on the furnace. If I short out the contact of the Taco SR506 Switching Relay and it is cold enough outside for the furnace to read temp below set outside temp. do I need these resisters ?
Unit fires up, produces no hot water and shuts off after 30
unit fires up, produces no hot water and shuts off after 30 or so seconds.
I'm trying to figure out what's going on with the connections
Hi. I'm trying to figure out what's going on with the connections and valves in the dedicated zone to the SuperStor indirect water heater from my oil-fired boiler. My home has a hydronic baseboard heating system that has been filled with cryo-tek for the last 4 years. The home and heating system is 10 years old.
About January 2015 is when I first noticed corrosion and some sort of mineral build-up around the connections and valves just to the SuperStor…there is no sign of corrosion on the boiler's other two zones. There is also a bit of seeping leakage from one connection on top of the SuperStor. We contacted a local plumber who suggested putting off the connection and valve replacement until warmer weather.
The same plumber also suggested replacing the SuperStor along with the corroded connections and valves. I'm wondering if that is overkill, and if the SuperStory absolutely has to be replaced. Also, is it essential that the connections and valves need replacement too, or can they be cleaned up in some way?
I have a couple of photos of the corroded connections and valves if that's useful.
Thanks for your help.
View More HVAC Questions
2 HVAC Technicians are Online Right Now
Ask Your Own HVAC Question
Ask Your Question Now
Ask a HVAC question
Type Your HVAC Question Here...
2 HVAC Technicians are Online Now
In The News
How JustAnswer Works:
Ask an Expert
Get a Professional Answer
Ask Followup Questions
100% Satisfaction Guarantee
Ask a HVAC Technician
Get a Professional Answer. 100% Satisfaction Guaranteed.
2 HVAC Technicians are Online Now
Type Your HVAC Question Here...
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.
Become a Professional
Terms of Service
Privacy & Security
© 2003-2015 JustAnswer LLC