Whirlpool Energy Smart Water heater - light is solid green then every now and then blink a couple of times then go solid again.What does this mean?

Convert to regular water heater, and install timer?
http://waterheatertimer.org/How-to-convert-energy-smart-water-heater-to-ordinary-water-heater.html

Depends if you have new or old style energy smart.
Generally this can mean the control board is bad.

Link below has contact information for Craftmaster and Whirlpool and some troubleshoot resources:
http://waterheatertimer.org/Whirlpool-Energy-Smart-electric.html

Repairs are funneled through the manufacturer who profits by selling non-generic parts not available from local hardware store... with purpose to end DIY repairs, make more money for manufacturer, and build up network of brand-loyal repair service companies who can sign you up with a repair package ... under the banner of saving you $1 a month in energy cost.
Look at label located on side of water heater to find manufacturer and serial number.

If water heater is within 6-9 year warranty period, then parts are covered, but labor is not.
Manufacturer can send parts and/or refer you to local technician.

Gene

Water Heater Timers Save Money

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Call whirlpool / they will ask for serial number
http://waterheatertimer.org/Whirlpool-Energy-Smart-electric.html#part

Gene

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

You have energy-smart electric water heater?
Control box might be bad.
Copy following link for troubleshoot manual, and whirlpool phone number for replacement parts etc:
http://waterheatertimer.org/Whirlpool-Energy-Smart-electric.html

Gene

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

1) Bad thermostat or thermistor depending on model.
Whirlpool/Craftmaster/American energy smart has control box on top, and you can order parts from Whirlpool.

2) Copy following links to help identify product.
http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html
http://waterheatertimer.org/Whirlpool-Energy-Smart-electric.html

3) Add a comment with more detailed information:
You have electric water heater.
Unknown brand, possibly energy-smart.
Unknown control box.
Cut off? Do you mean 'reset' is tripped?

4) Whirlpool energy smart requires 10 gauge wire and 30 amp breaker.
Control panel may not function with undersized electric supply.
Control panel has blinking-light errors ... if no error code then maybe the control box is bad.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

1) Copy following links for whirlpool energy smart resources:
http://waterheatertimer.org/pdf/Energy-Smart-troubleshooting-guide.pdf
http://waterheatertimer.org/Whirlpool-Energy-Smart-electric.html

2) Control box is probably bad.
There are 2 types of control boxes for older-style energy smart water heaters.
You will need model number and serial number from label on side of tank to order from Whirlpool.

3) This older-type energy smart water heater is probably discontinued by AO-Smith, American, State, Craftmaster, Reliance water heater group that makes Whirlpool and Kenmore water heaters.
New generation energy smart offers interface with home automation and/or non-existent smart grid.
Older energy smart only offered potential interface with non-existent smart grid.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Water heater is not identified.
Add a comment with information that appears on label on side of tank for possible help.
You might be talking about Whirlpool energy smart electric.
The error diagnostic lights flash a code: the code decipher is printed on the diagnostic control box on top of heater.
Call Whirlpool: you need model number and serial number from label located on side of tank.
1-877-817-6750

Open following links for energy-smart resources and typical manual:
http://waterheatertimer.org/Whirlpool-Energy-Smart-electric.html
http://waterheatertimer.org/pdf/Whirlpool-energy-smart-electric-manual.pdf

The evidence points to a control malfunction.
Call Whirlpool for assistance: 1-877-817-6750
You will need your model number and serial number located on label on side of tank.
Serial number is required because models change as the technology evolves.

Open following link to read product details about the Energy Smart, and download typical manual.
http://waterheatertimer.org/Whirlpool-Energy-Smart-electric.html

Note: Energy Smart water heater requires 10 gauge wire and 30 amp breaker.

Typical energy smart manual shows: 1 flash is start-up error, which indicates 'Power ON with no water in tank.'
This is not possible because at least the upper element would burn out, if not both elements.
If upper element burns out, this water heater will not make any hot water, since it is wired for ordinary non-simultaneous operation.
There cannot be air inside the tank since your hot water faucet is not spewing air.
http://waterheatertimer.org/How-it-works.html

Also be aware that model numbers change.
Read following account of fellow who replaced control board on his 4-year-old energy smart, and how he discovered wires are reversed on newer control boards. Be sure to ask Whirlpool about this possibility, in the event they say control board is faulty and send you new board:
http://www.fixya.com/support/t8263226-our_water_heater_doing

DO YOU HAVE A MANUAL FOR AN 80 GALLON
ENERGY SMART ELECTRIC WATER HEATER?
THE MODEL # IS EE3Z80HD055V
I HOOKED EVERYTHING UP, THE GREEN LIGHT IS ON BUT I DONT HAVE HOT WATER YET.