Need a diaphragm for my rinnia water heater reu 56es

The dial on the front panel of the heater. https://rinnaithailand.com/wp-content/uploads/2015/07/gas-water-heater_REU-55RT_and_REU-55RTL20001.pdf

Google the brand and model number for the operating manual and look up the code and it's meaning.

Dave, contact the Rinnai Dealer in your area. As they are the only ones that are trained and authorized to service the heater.

Hi Barry,

Turn off al power... drain the header manifold. Remove the top cover and remove the pressure sensing line from the pressure switch. Clean out the line and the manifold fitting with a piece of wire. Reinstall manifold drain plug. Reconnect rigid pressure sense line to manifold and pressure switch. Make sure the sense line does not leak or it can cause the unit not to heat at all. Leave the power for the heater off and circulate water for a few minues to flush header manifold then Test the unit. If this does not correct the problem... respond with the complete model number and we can continue troubleshooting.

Thanks for choosing FixYa,
Kelly

If water heater is leaking out of a hole, then tank is rusted out and needs to be replaced.
http://waterheatertimer.org/Leaking-water-heater.html

First thing is protect yourself.
Tank could rupture.
Turn off power
-Electric heater: turn off circuit breaker
-Gas heater: turn knob from ON to pilot, so pilot light stays lit.
Open bathtub spout on hot side and release pressure.

Now you're save.
When you need hot water, turn heater on for 1 hour, use hot water, then turn heater off again.

You can limp along like this for a while until heater is replaced.

I buy water heaters at Lowes, Ace, Home Depot, Sears.
Look for scratch and dent.
Look for same size that you have now.
manufactured homes require heater that is made for that application.
Propane and natural gas heaters have different burner.

Always offer 10% less than asking price on any water heater.
You need teflon tape, 10" pipe wrench, new flexible water connectors, and a drip pan, and maybe insulation blanket.

Read how to install gas water heater.
http://waterheatertimer.org/How-to-install-gas-water-heater.html
To install electric water heater, open link above because some things are same for both gas and electric.
Difference with electric is there is no gas line, and you connect wires same way that they came off.

turn it off and call the gas company saying you have a gas leak

Replace valve or if it has the usual diaphragm inside remove valve and replace washer/diaphragm
To prevent water draining from the whole system, turn off the taps on the heating pipes located just below the boiler AND the cold mains inlet

try having a look under the dash where the heater is feel arround in the foot wells for dampness your heater matrix inside you vehicle might be leaking...hope this helps

To test the thermocouple you will need to heat the tip with a lighter and use fluke meter to test the millivoltage being produced by it. To purge the unit of air shut off the gas line valve. Disconnect the connecter on the unit. And turn on the valve just slightly for a few seconds and release a little bit of gas. Be very careful doing this!!! Make sure there are no sources of ignition nearby. A few seconds of bleeding should be enough to clear out any air in the gas line. Then re-connect and tighten connector using two wrenches(one for a backup) then turn thee valve back on and listen/smell for any gas and soap fittings to check for leaks. After the air is clear if this is a manually set pilot then push the ASO button you use to set the pilot. You may need to hold it for a minute to make sure all the air goes thru the pilot. Then light the pilot while holding the ASO button in. You may need to hold this for a minute or two. When you let go it should stay lit. Look for a strong pilot flame that is blue not yellow and is making proper impingment with the thermocouple/pilot generator head assembly. You will not be able to fully test this unit without the water on due to this unit works off of a pressure/flow switch and the burner will not come on if it does not have water flowing. If it is not electric ignition and the pilot is lit manually then you should be able to light the pilot and have it stay on.

water heater is rotten
go to home depot and buy a replacement heater
it might be posible to rent a water heater from the local electric co and they will install it for free and charge you 12-15 per month for the heater saves money and saves cash for install
if it breaks they replace it same for gas heater let them dicker arround wit the heater and pull there hair out somtimes it is beter to rent than to buy also you can get a biger heater if you want they usualy will suply a larger unit at the same price if it will fit in your space