Bradford-White Corp PDV802200, D80T725, D65T625, PDV100S150, PDV100S250, PDV100T360 Troubleshooting

TROUBLESHOOTING

CAUTION

Use Caution Not to Damage Connectors when making Voltage Measurements or Jumping Terminals

Water Heater Fault: Water heater does not operate

Display Error Code: Water heater display does not operate - blank display

Check main power supply to water heater - fuse, circuit breaker, plug receptacle, line cord or wiring to water heater.

Check to make sure switch on top of control panel is in the ON position

Verify Primary and Secondary voltage at the control board.

If there is not 24 volts at Secondary pins on the control board, check transformer. Replace transformer or wire harness.

Checking line voltage to board. Pins to black and white wires.

Voltage at primary pins 1&3 should be 110-120. If not, check Line In pins 1&4.

Check line cord with volt meter. Replace line cord if defective.

Checking primary voltage to

transformer from board. Pins to

black and white wires.

Switch on power.			Checking secondary voltage from
			transformer. Pins to blue and yellow
			wires.
Does water heater display operate?
Does the induced draft blower start		N	Check wire connections of
to operate? Increase thermostat
setting if tank is warm.			board to display. See
			illustration.
	N
See next page

Checking transformer voltage, front terminals are 24 volts, rear terminals are 120 volts.

With the control cover tilted down,

measure the voltage between red and black wire pin connections to display.

Voltage should be 24 volts AC

measured at the back of the Control

Display.

If no voltage at Display, check wire harnesses and voltage at E-com screw terminals on the Control Board.

Replace control display if voltage is present at back of display pin terminals (see photo at left). Replace control board if no voltage is present at E-com terminals (1&3 and 1&2) to the control display.

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