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Rinnai Glo Ray Heater REH-20FA Pilot will not stay lit

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SOURCE: heater goes off with the

Probably the oxygen sensor faulty or lack of ventilation - this is a safety device to prevent carbon monoxide posioning - needs expert attention!

Posted on Jan 17, 2009

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2 Answers

The heater will shut down after about ten seconds.


Graham there are a couple of things that could be causing what you described.

The Oxygen Depletion Sensor (ODS) which is part of the pilot assembly could be clogged with dust, lint or pet hair. When this happens, the ODS reads the oxygen level as unsafe for operation. Using canned compressed air with a straw nozzle (like you clean your computer with) to blow out the ODS and the pilot tip should solve the problem.

Also, if the air louvers of the cabinet of the heater may also be clogged. Keeping them clean is important.

The Thermocouple, which keeps the pilot lit, may have failed. In which case it will need to replaced.

I hope this helps you to further troubleshoot & solve the problem. Thanks for choosing FixYa.

Sep 09, 2011 | Rinnai RHFE-1004FA 38,400 BTU Energy Saver...

1 Answer

How do you light the rinnai glo-ray heater


Without pushing in the knob, turn knob to "IGN" position, THEN press and hold in knob while in that position, repeatedly press "Ignitor" button. (If it's the first time you've lit it, it may take up to 5 minutes of doing this to get the gas line supply full enough to light the pilot.) After the pilot is lit, continue to hold in "IGN" button for 10 seconds, then release, then you should be good to go.

Nov 22, 2010 | Rinnai Heaters

1 Answer

I have a Rinnai model REH-18T-P that will not stay lite. The thermo couple looks to have a co monitor or other type wire on the thermo couple to connects back into the unit. Where do I find this thermo...


You probably don' need to start with the thermocouple. If the pilot is burning with a yellow tip and is curled away from the thermocouple. What you have is a dirty pilot. The heater thinks you have a low oxygen level because of lint or bug in the mixing chamber. With the pilot off, take a drinking straw and blow backwards thru the pilot opening. Then try again.

Nov 16, 2010 | Rinnai Desa Vent-Free Infrared Gas Heater:...

1 Answer

Dyna-glo parts


thermocouples you can buy from any heating spares oulet or national energy a hone well is most common for useing as a replacement

Feb 03, 2009 | Dyna-Glo D-E36 Infra-Red Wall Mounted...

1 Answer

Heater goes off with the pilotlight had it for 3 years work great rinnai glo-ray reh-23dft-n


Probably the oxygen sensor faulty or lack of ventilation - this is a safety device to prevent carbon monoxide posioning - needs expert attention!

Jan 17, 2009 | Rinnai Vent Free Gas Heater/: 6,000 BTU...

1 Answer

Pilot goes out after heating cycle


Check regulator on the unit.
Check pilot unit on the heater
use soapy water to check for leaks if see bubbles turn off main gas supply valve.
always turn off gas supply before any checks or repairs are made
when all else failes call your local gas provider to check heater and gas supply

Nov 22, 2008 | Rinnai Desa Vent-Free Infrared Gas Heater:...

3 Answers

Glo-Warm Wall Gas Wall-heater parts...


We had a problem keeping the pilot light to stay on, and this site recommended that it could possibly be the thermocoupler that was causing our problems also. We ordered the thermocouple, put it on,hooked it back up and it worked great! Thank you so much.
ordered thermocouple from www.masterparts.net

Nov 19, 2007 | Rinnai Desa Vent-Free Infrared Gas Heater:...

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