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First, you need to buy yourself pin probes that attach to your multimeter. Install of an AO Smith gas water heater with a Honeywell control valve. View our resources. I left it disconnected for overnight. Integrated Gas Appliance Controls. Clean everything. Replace FVS sensor if >45 KΩ 4. 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. Check for flammable vapors around water heater 2. I googled around and came across this website by Tyler Tork. Aquastats. Honeywell HumidIcon™ combined humidity/temperature sensors & RH absorption-based humidity sensors. One of the most basic skills a plumber should have is repairing a tank-type water heater. Anthony Pacilla is a registered master plumber for McVehil Plumbing in Washington, Pennsylvania. This switch trips and opens when the water heater burner gets too hot. Filter. 1. Before you get into how to test the temperature sensor, try power cycling the unit. Temperature sensors used to provide space temperature sensing, and switch initiation and indication of overrides from remote location. No go. Some typical applications for the 50021579-001 and T775-SENSWT/WR sensors … See “Lighting the Pilot / … - Duration: 1:26. 100dB A buzzer alarm will sound at device B. So I figured the system should reset itself once the over temperature condition goes away. Basically the Honeywell Electronic Gas Water Heater Controllers are crap (so far). However, if problems arise, you might have to engage on a Honeywell thermostat troubleshooting crusade. Join your colleagues who already get great content delivered right to their inbox. Look up the manufacturer’s chart for sensor resistance at various temperatures and figure out what your resistance reading should be. Along with straightforward management software, their products adapt well to your indoor climate demands. 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. My Honeywell Water HeaterGas Valve Control is giving the 5 Flash Code "Sensor Failure". Immediately, the burner turns on and we have a lift off! SOLA Displays - Residential. Sorry got a phone call. Should the water temperature get too high, the main burner and pilot will shut off automatically. 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. Boiler … Behind that is … Comments on this site are submitted by users and are not endorsed by nor do they reflect the views or opinions of COLE Publishing, Inc. 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. You can reset the switch by pushing the red button, but in reality you need to find out why the switch was tripped. Sign up now. 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. See figures. Now drain 1 gallon of water from the bottom of the tank as quickly as you can and get an accurate temperature reading. Honeywell C7046D1008 - 1097 ohm Electronic Temperature Sensor w/ 8" insertion - The T775 temperature sensors are 1097 Ohm sensors for use with the T775 Series 2000 electronic standalone controller in commercial heating and cooling applications. Turn the gas control knob OFF, turn the gas supply valve OFF, and click on "Need More Help" below. The system kept coming back with 4 flashes. The author provides some more troubleshooting and repair tips in the final installment of this four-part series. The assembly should be as clean as you can get it and then be reinstalled and tested for proper flame. Check that the temperature controls in the system are set to appropriate levels. If the temperature sensor reading isn’t of acceptable standards, replace the temperature sensor. 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 recommended fix is to disconnect everything from the module for an hour and let the power dissipated to “flush” out the memory. All models of WT8840 include an integrated NTC temperature sensor and piezo connections. Drain valve at the bottom of the tank as quickly as you can and get an temperature. Be replaced turn off the gas valve cover comes off which means temperature sensor isn! 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