Service Procedure PDV24-I

Thermostat Circuit Testing

DANGER

120 volt exposure. To avoid personal injury, use caution while performing this procedure.

CAUTION

Be Careful When Making Voltage

Measurements or Jumping Terminals Not to Damage or Deform Connectors or Connector Pins.

Condition: Water Heater Not Operating

Display shows error code “31” (Upper Sensor

Readings Faulty) or error code “32” (Lower Sensor

Readings Faulty)

Unplug or disconnect electrical power to the water heater

Check continuity of wire harness to affected sensor. Measurement of ohmeter should be close to 0 ohms. Replace wire harness if high resistance is measured (over 0.5 ohms) Check wires for intermittent connections, shorts, frayed insulation. Replace if necessary

If wire harness checks out O.K., check sensor resistance detailed in the section for testing sensor resistance. Replace the upper or lower sensor as indicated by error code number.

Turn power on to water heater.

Run water heater through heating cycle and verify proper operation.

Sensor temperature can be viewed when burner shuts off (see

section on viewing the display in “Service Mode”.

Measuring upper sensor resistance through wire harness (disconnected at control board).

Checking continuity of upper sensor wire harness.

Condition: Water Heater Not Operating

Display shows error code “65”

High Water Temperature (over 200 deg. F)

WARNING

Do not reset the display from the hard lockout

state without correcting the cause of the

overheating condition

Turn power “OFF”.

Draw water to cool tank below 120 deg. F

Check lower sensor. Is the sensor fully inserted into the well? Sensor is held in place with a clip fastened to the well (see photo ) Check lower sensor wire making sure it is not damaged or has breaks in the wire insulation. Check upper harness wires to upper sensor, if used (some models).

Removing lower sensor from well. Held in place by a clip fastened to well shoulder.

If sensor clip is damaged

Nreplace clip. Replace lower See next page sensor if damaged.

	Y	Check Sensor Resistance
	Y	(See Sensor Resistance
		(See Sensor Resistance
		Testing, following section)

PDV80T300, PDV100S150, PDV100T360, PDV80S150, D65T625 specifications

Bradford-White Corporation is renowned for its quality water heating solutions, with a diverse range of products designed to meet various residential and commercial needs. Among their stellar offerings are the D80T725, PDV100S200, PDV100S250, PDV80S250, and PDV802200 models, each equipped with advanced technologies and features that set them apart in the market.

The D80T725 is an innovative 80-gallon water heater that employs a powerful 75,000 BTU burner, ensuring rapid water heating for larger households. One of its key features is the Defender Safety System, which provides exceptional protection against potential hazards. The advanced electronic control system enhances efficiency and reliability, making it an ideal choice for energy-conscious consumers. Additionally, the tank's unique insulation helps maintain water temperature longer, reducing energy costs.

Moving to the PDV series, the PDV100S200 and PDV100S250 are dynamic, direct vent gas water heaters with capacities of 100 gallons and impressive BTU inputs. These models utilize a proper venting system that draws air from outside, ensuring that indoor air quality remains uncompromised. Both models feature Bradford-White's patented hydrojet total performance system, improving heat transfer by minimizing sediment buildup. This technology prolongs the lifespan of the unit while maximizing energy efficiency.

The PDV80S250, like its PDV counterparts, also utilizes direct venting technology for enhanced safety and efficiency. With an 80-gallon capacity and a robust 250,000 BTU input, this model is designed for businesses and larger households requiring significant hot water availability. The use of cutting-edge insulation technology in these models reduces standby heat loss, which translates to substantial savings on energy bills.

Lastly, the PDV802200 stands out with similar advanced features but offers a higher capacity of 80 gallons, making it a perfect solution for commercial applications. It strikes a balance between performance and reliability, ensuring consistent hot water delivery even during peak demand. The integration of robust safety features and user-friendly controls make it easy for facility managers to operate and maintain.

In summary, whether you opt for the D80T725 or one of the PDV models, you can expect a blend of performance, efficiency, and advanced technology. Bradford-White's commitment to quality and innovation ensures that each product meets the demands of modern consumers, making them a leading choice in the water heating industry.