If the unit doesn’t come on and still codes, then you need to take the gas valve apart. ... status light now showed 5 flashes followed by 3 sec pause meaning water temp sensor failure. Basically the Honeywell Electronic Gas Water Heater Controllers are crap (so far). And that’s what I did, I figured I have nothing to lose as I would need to replace it if it didn’t work. Before you get into how to test the temperature sensor, try power cycling the unit. Locate the hot surface igniter and look for a spark or glow there. 4.5 out of 5 stars 890. Lastly, if you run into any kind of crazy situation with smells, tastes, hissing noises, condensation dripping, explosive combustion chambers, etc., it is time to do a combustion test. Reset gas control valve. View our resources. I first saw the LED flashed 7 times, which means “Gas Controller Valve Failure.” Doesn’t sound good. - Duration: 1:26. It is designed for use in standing pilot applications using an immersion well for water temperature sensing. When this happens, the gas valve closes, extinguishes the pilot light and your water heater stops heating water. Aquastats. He has 22 years of experience in the plumbing and HVAC trades, and has a bachelor’s in business and economics from Thiel College. Zero - Controls off, pilot out normal operation would be one flash. Don’t think that if it says 82 degrees that 80 degrees is close enough. Igniters and Sensors. Hard lockout to be cleared when the power is manually cycled, the control dial is rotated through the HOT setting 7 times within 30 seconds and the resistance of Try first! Red LED flashes at device C. Push notification is sent to your mobile device D. Email notification is sent to the email address connected to your Honeywell Home app The pin probes are meant to test pins on the small plastic connectors because regular-sized probes will only damage the pins when you force them into the small holes. Start a live chat Our customer care specialists are available to chat with you live and help you address any problems you have. What’s going on? Two - Thermopylae voltage low four flashes mean high temp shutdown, five flashes means temp sensor failure, seven flashes gas control or valve failure, eight flashes means flame sense error.Ours is flashing four times for high temperature shutdown. See “Lighting the Pilot / … Wow, so many people had the same problem dating back to 2013. Sign up now. 60 minutes: No go. Set the thermostat or the device's controller slightly above the current room temperature. The Honeywell gas valve went into “High Temperature Shutdown” mode. Clean everything. High temperature shutdown. Honeywell is one such label present in almost every household on the American continent. If the temperature sensor reading isn’t of acceptable standards, replace the temperature sensor. 5 – Replace Gas Valve This indicates a sensor failure and the gas control valve must be replaced. So far I have covered initial troubleshooting steps, specifics on diagnosing whether something is a water tank problem or a gas control issue, and the testing of thermocouples, piezos and pilot light issues. Clean the burner, the burner assembly, the orifices, the burner ports, the air shutter (if it has one), feed line, venturi (if it has one), pilot assembly, etc. Do what you need to do to disassemble the valve but leave the sensor plugged into the back plate. Page 8: Combustion Chamber With Tco Switch • The water heater and/or pipes is located in the center of the switch, Scalding Risk are located in an area with high directly between the terminals. Should the water temperature get too high, the main burner and pilot will shut off automatically. Trade Water Heater Controls APPLICATION The WT8840 Water Heater Control is designed for use in Standing Pilot applications using an immersion well for water temperature sensing. SOLA Displays - Residential. 1. Based on the “Status Light Code,” it means “Temperature Exceeded.” It made sense as we had a heat wave recently. Features Use the T775-SENS-OAT to measure outside air temperature. In this final article, I’ll cover temperature sensors, erratic combustion and thermal switches. Often blamed on sediment in the tank, the 4 flashes is one of the most common problems with the Honeywell gas valve. It’s composed of serveral thermocouples connected in series to create roughly 350 mV of energy. 1-16 of over 2,000 results for "water heater sensor" Skip to main search results ... American Water Heaters 6911131 Water Heater Gas Valve and Temperature Control Assembly Genuine Original Equipment Manufacturer (OEM) Part. Water Heater Controls. Then I took a sheet of aluminum foil (an electricity conducting material) and touch all the various solder joints (silver-looking blobs) especially the big capacitors, which are the energy storage devices. So I figured the system should reset itself once the over temperature condition goes away. Behind that is … It is designed for use in Standing Pilot applications using an immersion well for water temperature sensing. This switch trips and opens when the water heater burner gets too hot. WT8840. Viva DIY! My first thought was that the water heater pilot light went out, based on my past experience. Remove both wires from the thermal switch, set your meter to ohms, and put one of the leads on one of the connection points and the other lead on the other connection point. The WT8840 series is the Water Heater Control for trade use to replace WV8840 valves used in AOSmith and Bradford White Water Heaters. Check the wiring. It uses a “thermopile” technology that converts thermal energy into electrical energy. The sensors have the ability to record and log your humidity and temperature of the area you are monitoring. Join your colleagues who already get great content delivered right to their inbox. This leak sensor is great for stopping water or flood damage from water heaters, sump pumps, washing machines, dishwashers, sinks or toilets. That sounded easy. Don’t forget to set the temperature. My Honeywell Water HeaterGas Valve Control is giving the 5 Flash Code "Sensor Failure". Honeywell WT8840A1000 - WT8840 Water Heater Gas Valve Control, NG - 1" Spud, 4" W.C. - WATER HEATER GAS VALVE, STANDING PILOT WITH PIEZO, SETPOINT 55-155F, SPUD LENGTH = 1", BRACKET= OFFSET, REGULATOR SETTING= 4" W.C., GAS TYPE=NATURAL GAS The WT8840 series is the Water Heater Control for trade use to replace WV8840 valves used in AO Smith and Bradford White Water Heaters. Still no go. The Gas valve is doing 5 flashes., which means temperature sensor. Check that the temperature controls in the system are set to appropriate levels. Filter. This system will shut off the water heater if the Water heaters covered by this handbook water temperature becomes excessive. Fan and Limit Controls. Integrated Gas Appliance Controls. I first tried resetting the module by turning it to off and re-start the pilot light by turning the dial to “Pilot”, holding down “Pilot” and push the spark igniter. ... Honeywell Home RWD21 Water Leak Alarm. Anthony Pacilla is a registered master plumber for McVehil Plumbing in Washington, Pennsylvania. The recommended fix is to disconnect everything from the module for an hour and let the power dissipated to “flush” out the memory. 104 items. Now drain 1 gallon of water from the bottom of the tank as quickly as you can and get an accurate temperature reading. by the flammable vapor sensor. The problem is that the microcontroller inside the unit remembers the last “over-temp condition” and would not forget it. Immediately, the burner turns on and we have a lift off! Now drain 1 gallon of water from the bottom of the tank as quickly as you can and get an accurate temperature reading. We get luke warm water, intermittently. If you don't want to bring your iPad into the bathroom, we can send you a magazine subscription for free! If you use the hot water (which I now have to turn a little hotter than normal to get my desired temp), then it eventually goes away and flashes normal operation "1". Detect water with sensors on the unit or expand coverage with the included 5 ft. water sensing cable. Test System by Increasing the Temperature. ST9420C indicates that Heating and/or Hot Water are ON. There are two types of burners — steel and cast iron. ... Sensor & Thermistor Parts Valve ... on track. Five flashes every three seconds indicates an internal sensor failure. the meaning of this is temperature sensor i mean code 5 mean temperature sensor failure since yesterday the water is not consistent,but this morning when i increase to high temp,it come to normal operation. Most newer water heaters use Honeywell gas valves. I kept resetting the system without much success to get the gas burner to turn on again. Honeywell water heater thermostat valve. Leaks and frozen pipes can cause serious damage to your home. The unit could overheat for a few reasons, most of which have to do with incomplete combustion. If you have a Honeywell gas valve on your water heater, and you find you have no hot water, this may be the answer to your problem and the easy fix. You just need to turn on the thermostat to the heat position. Drain about 4 to 5 gallons of water out of the drain valve at the bottom of the water heater and throw it out. The author provides some more troubleshooting and repair tips in the final installment of this four-part series. diameter probe sensor. !” Not good. Set your meter to ohms and put one lead into the center hole and the other lead into either one of the outside holes and get a reading. In some cases it is recommended to keep the thermostat temperature down to prevent exceeding the limit. Magnetic Sensors Hall-effect or anisotropic magnetoresistive (AMR) sensor ICs in digital or linear outputs for angle, position & speed sensing; value-added packages. 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