Question about Navien CH-240-ASME-NG, Combi Condensing Commercial Gas Water Heater/Boiler 9

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Water pressure valve

Error message 02 and 11

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4 Answers

Water pressure is high and over flow pipe is running


Have you measured the pressure or is it a faulty valve. Are the inlet and outlet valve open. There is a safety valve for thermal relief on top of the tank.

Mar 19, 2015 | Water Water Heaters

1 Answer

Jura z7 error message empty coffee tray when tray s not full


Yo James,

I know nothing of your unit, but I've never let that stop me before??.

Sounds like a sensor is stuck in the "tray full" position and popping an error message based upon what "it" is detecting.

OK, how does the unit know from "full tray" (what ever that means). I'm a big believer in problems being created by dirt, crud and in your case, coffee grounds. Unless the sensor (switch?) itself has failed, I'll bet there is debris fouling the system.

Find the "full tray" (what ever that means ??) sensing mechanism and clean/replace it and I'll bet you will solve the problem.

All the best.

Dec 07, 2014 | Jura Impressa Z7 One-Touch Automatic...

1 Answer

Hi, i have a water heater (Rheem XG50T...) w/ a wifi module. Today, the temp / pressure relief valve drained a little bit and now my water heater does not work as the error A102 does not get clear eve


Error A102 ?
Where does the error code show on your model?
The XG50T appears to have honeywell gas control valve that flashes error code with series of blinks, and not LCD readout.
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#intellivent

If the release of water got electronics wet, then the electronic parts likely will not function.
Release of water from TP valve means temperature of water inside tank exceeded the temperature-pressure rating of TP valve.
This is a safety feature.
Water from TP can indicate thermostat failure, or other less serious issues.
http://waterheatertimer.org/How-to-replace-TP-valve.html

Your water heater appears to have 9 year warranty.
Serial number located on label on side of tank will have numbers- 1st and 2nd digits are week of manufacture, 3rd and 4th digits are year of manufacture,
Call Rheem since they do not post service manuals.
Other companies post service manuals and are much easier for DIYers.

Gene


Water Heater Timers Save Money

Dec 06, 2014 | Rheem 50 Gallon FVR NATGAS Water Heater...

1 Answer

C4 67 error message, what does this mean


bad pc board?
inadequate maintenance?
bad oxygen sensor?
inadequate air supply?
bad venting?
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html#error

Gene

Oct 04, 2014 | Rheem Paloma Tankless Water Heaters...

1 Answer

Bosch GWH2400 ENG has an E2 message


E2 is a cold water inlet temp sensor. Has your unit experienced any freezing conditions? If it senses below 36 degrees or above 90 degrees it will show this error.

If its normal temp, and you still get this error...check your sensor. Its an 8(kohm) sensor. Make sure its not open. If it reads ok and your temp is not an issue, then you probably have a bad control board

Dec 15, 2013 | Bosch AquaStar 2400ES-NG

1 Answer

Ion sensor


What is model number?

Jul 16, 2013 | Bosch Water Heaters

1 Answer

Rheem model 41vrp40n flashes twice and stops working


Error code means that you have electronic gas control valve.

Copy following link to identify gas control valve, read error code meanings for each, and download service manual relevant to each gas control, but not specifically Rheem since rheem does not post service manuals.
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#intellivent

The fact that water heater restarts, means that water heater is getting gas, getting sufficient air for combustion, thermister is ok, gas pressure is good, etc.
The fact that you unplug and replug water heater and it works, shows that you have power vent model.
Since water heater worked correctly before, 2 flashes with Rheem power vent model could mean that pressure switch has failed.

Jul 29, 2012 | Water Heaters

1 Answer

After hot water demand, burner stays lit, blew up Pex supply line


Thermocouple has 2 ends. One end attaches to gas control valve, other end sits inside the pilot flame.
Flame heats thermocouple, causing tiny electrical current that is detected inside the gas control valve and keeps the gas valve open so water heater can turn on when thermostat calls for heating.
If pilot goes out, then no electric current reaches gas control, and all gas to burner and pilot is shut off.

If pex line burst, that implies very high pressure, caused by closed system with check valve that stops expansion, or possible clog in the water line, or high local water pressure, or clogged factory-installed heat traps.
Put pressure gauge like BTG100 on the drain valve to check pressure, should not exceed 80psi, install pressure reducing valve on cold water line, install expansion tank on cold water line. Remove heat traps and install ordinary pex-lined di-electric nipples from hardware store.

If the water was super hot, then overheating could have caused the pipe explosion.
However the gas control thermostat is ECO protected, and if ECO (energy cut off) trips because of high heat detected inside the tank or combustion chamber, the gas control will trip off and no longer work, gas control needs to be replaced. Some newer electronic gas controls can be reset, but that type heater uses a thermopile instead of thermocouple.
Thermopile is basically a group of thermocouples, that product more electric current that is used to power electronics inside the gas control valve, which issues an error code on the gas control, and some day will send a text message each time out-of-range event occurs.

Copy following links for troubleshoot resources, including troubleshoot by type of gas control valve:
http://weaterheatertimer.org/How-to-troubleshoot-gas-water-heater.html
http://waterheatertimer.org/Low-hot-water-pressure.html
http://waterheatertimer.org/pdf/How-to-replace-water-heater-gas-valve.pdf

Jul 12, 2012 | Bosch Aquastar 125B Gas Valve NG - Part...

1 Answer

Rheem Eco Sense PTG2-42PVV error messages


Open following link for rheem tankless resources, including error codes and typical maintenance.
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

May 18, 2012 | Water Heaters

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