Often blamed on sediment in the tank, the 4 flashes is one of the most common problems with the Honeywell gas valve. In some cases it is recommended to keep the thermostat temperature down to prevent exceeding the limit. 5 - Replace Gas Valve This indicates a sensor failure and the gas control valve must be replaced.
The immersion well for sensing water temperature has matched NTC thermistor sensors. These sensors provide the fail-safe mechanism through which the WT8840 can provide both accurate water temperature control as well as water temperature limit (Temperature Cut-Out [TCO]) function. SPECIFICATIONS IMPORTANT WT8840 controls provide direct replacement only.
(2) 2 product ratings - Honeywell 415-47845-05 ICON Natural Gas Pilot Assembly 18" 233-47845-05 - 2 PK
The valves are available in different materials and with pressure and temperature ratings to suit user-specific applications. With Honeywell’s control valve solutions, users benefit from safe, efficient and cost-effective final control capability in a variety of industrial and commercial applications.
The system kept coming back with 4 flashes. Based on the "Status Light Code," it means "Temperature Exceeded." It made sense as we had a heat wave recently. So I figured the system should reset itself once the over temperature condition goes away. I kept resetting the system without much success to get the gas burner to turn on again.
Used on gas fired standing pilot appliances with 30 mV thermocouple. These Honeywell gas controls include a manual gas valve, safety shutoff, single millivoltage automatic operator, and pressure regulator, pilot gas filter and flow adjustment, pressure tapping, and thermocouple connector. V800 is used on 24V systems.
Honeywell SmartValve Gas Valve, Natural Gas/LP, Standard Opening, 3/4" x 3/4", for Intermittent Hot Surface Ignition Systems SV9601M4571 In-Stock $559 84 ADD TO CART
The WT8840 series is the Water Heater Control for trade use to replace WV8840 valves used in AOSmith and Bradford White Water Heaters. It is designed for use in Standing Pilot applications using an immersion well for water temperature sensing.