Page 17: Service Procedures SERVICE PROCEDURES Removing the Manifold/ 8. In this final article, I’ll cover temperature sensors, erratic combustion and thermal switches. When you take the burner assembly out, remember that some of the nuts may be reverse thread. Press the "HOT WATER TEMPERATURE" button. Use a maximum torque of 31 ft. lb. Using a YouTube video titled "Water Heater Gas Valve Replacement", I was able to install this unit by myself in … Five flashes every three seconds indicates an internal sensor failure. If the unit doesn’t come on and still codes, then you need to take the gas valve apart. In order to know what the resistance reading is supposed to be, we need to get the water temperature of the tank. If all conditions are good and the water heater … 5 replace gas valve this indicates a sensor failure and the gas control valve must be replaced. Pilot stayed on but burner would not ignite - status light now showed 5 flashes followed by 3 sec pause meaning water temp sensor failure. Make sure the water heater is properly grounded and is operating at 115-120 volts. 3 possible causes and potential solutions . I first saw the LED flashed 7 times, which means “Gas Controller Valve Failure.” Doesn’t sound good. So I removed the PCB (printed circuit board) from its housing by unscrewing the torx screw and snapping the PCB from the housing. Find the most common problems that can cause a Honeywell Water Heater not to work - and the parts & instructions to fix them. The water heater comes with a sophisticated, advanced Honeywell Water Heater thermostat/valve that provides continuous monitoring of the water temperature and turning on and off the gas accordingly – all without battery. Replaced Gas Valve and unit is now fully functional again. However, if problems arise, you might have to engage on a Honeywell thermostat troubleshooting crusade. Write down the resistance reading. I just saved $110 (Walmart’s price) for the module and enduring days of suffering through cold showers and complaints from my family members. Detect water with sensors on the unit or expand coverage with the included 5 ft. water sensing cable. View solutions. If you don't want to bring your iPad into the bathroom, we can send you a magazine subscription for free! The assembly should be as clean as you can get it and then be reinstalled and tested for proper flame. Often blamed on sediment in the tank, the 4 flashes is one of the most common problems with the The WV4460E is mounted on the outside of the water heater tank. Water temp sensor is located on back of this gas valve unit. No hot water! 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. Now drain 1 gallon of water from the bottom of the tank as quickly as you can and get an accurate temperature reading. Original unit had plastic water temp sensor, new one has metal temp sensor. After a minute or so, the LED started blinking once and paused and blinking once again. Gas and electric water heater temperatures are set at the factory, but can be adjusted for your own preferences with only a couple of tools. The author provides some more troubleshooting and repair tips in the final installment of this four-part series. It uses a “thermopile” technology that converts thermal energy into electrical energy. Along with straightforward management software, their products adapt well to your indoor climate demands. The problem is that the microcontroller inside the unit remembers the last “over-temp condition” and would not forget it. Hydrogen gas is extremely flammable and can ignite. The pilot ignites the water heater’s gas burner. This unit (Honeywell WT8840B1000) replaced my old WV8840B1042, which was throwing a "5 flash" code (Temperature sensor failure). So I figured the system should reset itself once the over temperature condition goes away. It is designed for use in standing pilot applications using an immersion well for water temperature sensing. Failure to comply with this could result in substantial property damage, severe personal injury or death. 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. My first thought was that the water heater pilot light went out, based on my past experience. Check dial on combination thermostat/gas valve. These temperature sensors are designed to offer stable and fast linear outputs. Accurate and interchangeable, they have plastic or ceramic, miniaturized or surface mount housings (including printed circuit board termination). Deliberately, maliciously, and probably under the pretense of safety. This switch trips and opens when the water heater burner gets too hot. Test System by Increasing the Temperature. Now that you have the burner in your hand, look for and remove any loose soot buildup, especially in the burner ports. Based on the “Status Light Code,” it means “Temperature Exceeded.” It made sense as we had a heat wave recently. !” Not good. SKU: C7031D2003. ... Sensor & Thermistor Parts Valve & Float Parts. 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. CS8840 pilot assemblies are Temperature Too High Low Water Pressure Water Odor Check both the cold and hot water at a Harmless bacteria normally present Scalding Risk sink to determine if the lower pressure in tap water can multiply in water A water heater can is only on the hot water side. Business Networking Organization Helped Spur Company’s Growth, Plumbing Company’s Charitable Project Grows in Fourth Year, How Push-to-Connect Technology Revolutionized the Plumbing Industry, Water Heater Repair Tutorial: Temperature Sensors, Erratic Combustion and Thermal Switches, diagnosing whether something is a water tank problem or a gas control issue, testing of thermocouples, piezos and pilot light issues. The temperature reading is very critical and detail is of the utmost importance. Then I put it back to its housing and put everything back to its original positions. I always had issues with the temperature, and the water was very hot, just learned to live with it. 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