20 Most Recent Navien CH-240-ASME-LP, Combi Condensing Commercial LP Water Heater/Boiler 91 - Page 8 Questions & Answers

Search online for "appliance parts" and choose a website for that. You will be asked the model number of the heater and then a list of available parts will come up for you to choose from. I order from RepairClinic.com or APDepot.com and they both often have a video of how to make a repair as well.

it has something to do with ignition ,gas supply, ignitor

Unless you are licensed to work on or repair boilers call a professional. You will spend more in time and money trying to fix it, and finding a supply house that will sell you boiler parts. You could seriously injure yourself or someone else, boilers run very hot and are rated a pounds steam which is dependent upon boiler pressure.

you need to google this or phone the makers

You will not win arguing with the gas company, just install vent in accordance with code, and

It sounds like the tank is leaking. Without the information as to where the leak is the only answer I can suggest is to replace it.

Just google Rheem and you can contact them on there site

You replaced the gas control valve thermostat, and still getting same error, then full troubleshoot walk through is needed top-to bottom using the service manual: http://waterheatertimer.org/pdf/Bradford-white-programmable-water-heater-manual.pdf

you can check the serial number on there wed site and ask if its still under warranty

Check pilot is clean and strong Also check sensor is clean and connections are clean and tight .

Gas water heaters have thermal reset button located on front, electric heater located on upper thermostat .... http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html#parts http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html

It is a burner lockout. Have you checked your oil level?

You might want to do it over mabey you didnt do it right

Check elements

Should be under warranty. Call factory service

I have opened the thermostat to see if there is a battery and now doesn't turn on when the temperature is lower but it says to my baxi to stop after 5-10 minutes. What can I do to solve this problem ?

Check youtube there are videos showing a full replacement install. If you can do plumbing this can be a DYI job. Or you also can save some money by buying the boiler and removing the old and hiring a plumber to the install. Some plumbers wont do that, so check first. https://www.homeadvisor.com/cost/heating-and-cooling/install-a-boiler/

Have you removed the front panel? They should be wires mark ZR & ZC. .

lower incoming water pressure

You asked once, you have the answer.