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


Maybe the problem is bad faucet cartridge.
Test for crossover:
http://waterheatertimer.org/Crossover.html

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
http://waterheatertimer.org/How-to-install-gas-water-heater.html

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.
http://www.thetankatwaterheaterrescue.com/forums/forum3/

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:
http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html

2) Leaking water heater.
Open following link to identify problem with illustrations and troubleshoot leaking water heater:
http://waterheatertimer.org/Leaking-water-heater.html
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

Jun 27, 2011 | RELIANCE ELECTRIC WATER HEATER

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

Turned off the hot water to fix a leaking tap. now the tap has no hot or cold water and the hot water tank valve is leaking?


It sounds like two problems.
Problem 1) Clog inside faucet or clog inside pipes at faucet
Remove supply tubes leading to faucet and see if problem is inside pipes or inside faucet.
My bet is clog inside faucet.

If you have galvanized pipe that meets copper pipe, this can be trouble spot.
Article on clogged water pipes at Inspectapedia:
http://www.inspectapedia.com/water/Water_Pipe_Clog_Repair_Guide.htm

Article on clogged pipes:
http://www.waterheaterrescue.com/pages/WHRpages/English/Troubleshooting/Tanklets/backflushing.html

Problem 2) Water heater leak ... you say tank valve is leaking? Is that cold-water shut-off valve? Or tank drain valve? Or TP valve?

If cold water shut-off is leaking, then replace shut off.

If tank drain valve is leaking, then check if plastic valve is cracked. If drain valve is cracked, then replace with a brass valve from Home Depot. If plastic valve breaks off, then use hammer and screwdriver to gently chip out the broken plastic valve. New valve threads need teflon tape to seal pipe. If valve is just dripping, then put garden-hose cap over end of valve and screw down tight.

If TP valve is leaking, then replace with same temperature and pressure rating.
New TP valve threads need teflon tape to seal pipe.

Problem 3) If pressure is low all over house:
Buy pressure gauge at hardware store that screws onto hose connection.

Test pressure on outdoor spigot.
Open faucet and check if pressure drops. This says if problem is inside pipes that enter house.

Test pressure on water heater drain valve.
This says if pressure problem is before -or- after water heater.

If problem is before the water heater, then shut-off valve located on cold water line is suspect.
If problem is after water heater, it could be in hot water outflow pipe on top of water heater, or a nearby elbow.

Remove hot water line leading from water heater and check pressure. This says if problem is where hot water leaves tank.
Read articles above about clogs inside water lines.


Nov 16, 2010 | Rheem Water Heater Pressure Relief Valve

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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