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F4 ionisation problems - Water Heaters

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Geospring ge hot water heat geh50deedxx. Had f4 code fan failure replaced fan still does not work. What other component(s) could be bad

Call GE
Available manuals and GE contact info on following link:

Heat pumps are generally not DIY repair like ordinary electric water heater


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Apr 04, 2015 | Water Water Heaters

1 Answer

I have an AQ125B-NG not producing hot water..

Maybe the problem is bad faucet cartridge.
Test for crossover:

Tankless are really made to be thrown away when problems start.
It's like replacing parts on your computer ... for real, when the hard drive crashes and new one is installed, then rarely are problems repaired satisfactorily.
Repair any brand tankless, any problem, permanently, same day, for $385

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Mar 09, 2013 | Water Heaters

1 Answer

Had to replace main board and power supply, now have a heat pump error. HPF code F4.Unit is 2 years old.

Type, brand, model number of water heater is not known.
If you have GE heat pump water heater, the parts are covered after first year for defects in workmanship. Otherwise the expensive water heater is not covered if it stops working.
The risk of failure is perfect reason to avoid expensive water heaters, because all costs are energy, and these units cannot guarantee longevity, even with correct and regular maintenance.
If your new laptop computer needs a motherboard, that's red flag that the computer machine will never work correctly again. Same is true for water heaters, or any expensive digitally-controlled appliance.
Same is true for tankless water heaters and hybrid water heaters and condensing water heaters and complicated solar water heater systems.
Call the manufacturer and see what they say.
Check voltage to unit. Make sure the unit is grounded.
Post question with exact mode and brand name on professional water heater forum.

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Aug 13, 2012 | General Electric Ge Appliances GEH50DNSRSA...

1 Answer

I have a reliant 606 electric water heater and I noticed that i wasn't getting any hot water. I shut the water off and look to see if i could see any problems. I cut the water on and notice that wate...

Problem is not clear:
Sounds like you have two different problems, but overheated water heater can cause both problems:

Before calling service technician, open following links for full do-it-yourself troubleshoot.
ADD A COMMENT for more details after looking at information below.
1) No hot water could be bad thermostat, or bad element, or circuit breaker is tripped.
Open following link to troubleshoot electrical problem with electric water heater:

2) Leaking water heater.
Open following link to identify problem with illustrations and troubleshoot leaking water heater:
Look carefully at illustrations on page:
If drain valve is leaking, then put a garden hose cap on it.
If TP overflow pipe is leaking, do NOT cap that pipe


1 Answer

We have about two feet of water inside the tank area where the salt is. How do we get the water out?

The problem is that the unit is not creating a suction and taking out the brine water. Usually with this model the problem is the rotor and rotor disc seal. It can also be that the nozzle and venturi is clogged. You will need a service call to fix this problem. You can bail it out with a pan, but the problem will return until the service problem is fixed.

May 01, 2011 | General Electric GE SmartWater Household...

1 Answer

Having a problem only in the winter the hot water stops we have been solving the problem by running the bathroom hot water faucet while taking a shower. When running the dishwasher or washing machine, or...

It is a are intake problem what happens is you get frost cristal bildup in the airintake you could take the front cover off dering the winter and you wont have the problem.

Jan 20, 2011 | Noritz 6.9 Gallon Residential Tankless...

1 Answer

I get a ec code and have to reset it.

EC is no ionisation and is usually the result of a gas pipe or gas supply pressure problem. The other problem is the installer never adjusted the CO2 levels. If the yellow paint on the two screws inside the cabinet is still intact, the plumber did not do his job. Make sure this is done with calibrated CO2 analyzer that was calibrated within the last 6 months.

Jan 22, 2010 | Bosch AquaStar Indoor Natural Gas Tankless...

1 Answer

My Rinnai tankless water heater cycles up and down when we turn on the hot water. The water gets hot and then cold, hot and then cold. What is the problem?

You need to first make sure is the tankless who do the “up and down”! . If the problem manifest on more then one faucet then the problem is the unit. Have a thermometer (we use a infrared gun wich we train on Hot water pipe !) and see if actually the unit is the culprit.
If the problem is only on one shower It is possible also to be a “antyscalding valve” If the trigger valve on your shower is being adjusted too low then it trigger a splash of cold water now and then on regulate intervals. Try to adjust the temperature lower at the unit (say 110F ) and see if the problem change. If it does, then the problem is for sure in the faucet. If it does not change , then you have a problem with the water flow sensor . It is simply getting stuck. Bad bearing or even a piece of Teflon tape. I believe you will need a certified technician for that so no issues with your warranty will appear.

Dec 29, 2009 | Rinnai Water Heaters

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