I did try light pilot and it started. The mechanism required to relight your pilot light depends on how new or old your unit is. What?! and waited some more for the light to go out. *If higher than 35mv check connections and switch. And after 5-7 seconds gas valve Honeywell shutdown – with […] If ventilation is restricted, the water heater will not function properly. Even if you have very limited experience working with gas and electric, you can test your thermopile in just a few minutes with the right tools. My Honeywell Thermostat Says Wait: What to do Next? Making use of the thermoelectric effect a voltage is generated by this temperature gradient. Every make and model may be slightly different. For 1 week. Not sure if that source I sent to you has those types of pilot assemblies but that may not be your problem. Check thermopile specs for proper voltage. Improper millivolts will also cause the appliance to shut down in the middle of operation. Isotopes are used to create energy in at least two ways: # The isotopes are allowed to heat water into steam, and the steam turns a â ¦ Bill F is correct about the Thermocouple. Gas control valve Honeywell blinked with 2 lights and means low voltage thermopile. Here’s how you can resolve it. How a Thermopile Pyranometer Works We didn’t want to replace the Thermopile. The product fit perfectly and screw snuggly into place. I checked the thermopile voltage and it was initially showing about 90mv. Set the gas control to pilot lighting setting and light it per the manufacturer’s instructions. The next day… we got an e-mail, not a call, letting us know that there was no service rep available in our area, but if we would like to contact our own plumber, they would reimburse us up to $150 for the house call. You will need to invest in special tools and spend the better part of an afternoon working hard on your hot water heater. ( Log Out /  Man--- I pulled out a LOT of wall switches that has high milivolt losses through them! Ok, so that’s less than 1%. ( Log Out /  So then I hopped on the Lowe’s website, and searched for gas water heaters. Be sure to check your manufacturer’s instruction manual to verify this specification before moving ahead with a thermopile replacement. This 36 in. Now pilot either won't light or lights for a minute and then after turning temperature control to hot, there is a loud pop of … You can enter the serial number for your Rheem product to see if it's registered. ( Log Out /  Pioneer manufactures, sells and services a broad range of specialty electrical transmission, distribution and on-site power generation equipment for applications in the utility, industrial, commercial and backup power markets. A pilot light can go out. Hey there! Show More. View all posts by noravista. That would take days to receive a replacement…. What to Do If the Ceiling Fan Stopped Working but the Light Still Works, How to Disconnect a Gas Stove the Easy Way, The Ceiling Fan Is Clicking: Here’s What to Do. Voltage drop across the switch terminals Burner on: 35 mv or less. Disconnect the leads from the generator and test with a voltmeter. I bought this thermopile to repair a wall furnace which would not stay lit. If this still doesn’t solve your problem, you may want to consult a professional. I took the pilot/thermopile assembly out and cleaned the thermopile, then put the thermopile over a butane flame to simulate the pilot and measured about 200 millivolts. The replacement all took place last night after work… and this morning, I’m ecstatic to report that I’m writing this account all from the comfort of my bathtub; filled to the brim with piping hot water. The next day, Sam got a hold of a Rheem service tech. Enter your email address to follow me and receive notifications of new posts by email. Most thermopiles are designed to generate between 500-750 millivolts from the heat of a normal pilot light, so mine was well on the low side. The Rheem PROTECH Pilot/Thermopile Assembly Replacement Kit contains everything that you need to replace the Pilot/Thermopile Assembly on your Rheem water heater with the Vesta liquid propane gas valve. Cause: Low voltage to the gas valve. If you don’t feel confident in dealing with your own gas lines, please call in a professional to help. So the valve control circuit should be able to deal with input voltage range 1 - 1.5 V. Not sure that your can achieve this goal with a single MOSFET circuit; there are many power MOSFETs with low resistance at Vgs > 2.5 V, but it may be hard to find a power MOSFET with low resistance at Vgs = 1 V. Remedy: The original Thermopile that comes with most gas fireplace will fail in the first 3-5 years. The thermopile is the compilation of several thermocouples together. 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