Bradford White eF Series Service Manual

Is there continuity
through the normally
closed intake pressure
switch?
(see photo 31)
Y
Replace
intake pressure switch.
(see pg 37)
Switch OK.
Does Blower Energize?
Does purge LED
illuminate on the ignition
module?
Remove hose from intake
pressure switch and
Restart heater.
Does purge LED illuminate?
N
Y
With manometer, take a
reading from the inlet tube
pressure tap. Is reading
negative (-)1.2" W.C.
or more?
(see illustration below)
N
See Vent Safety Switch (page 38)
or
Exhaust Pressure switch (page 27)
or
Blower testing (page 25)
Y
N
Y
N
N
Y
Is intake vent system
obstructed?
Y
N
Call for technical support.
Clear obstruction.
See Exhaust Pressure switch (page 27)
or
Blower testing (page 25)
Page 36
Inlet Tube
pressure tap
Service Procedure EF-XI
Intake Pressure Switch Testing and Replacement
31
Disconnect red wire leads from
pressure switch and check
continuity through switch.
WARNING
120 volt potential exposure. Use caution
making voltage checks to avoid personal injury.
Is there continuity
through the normally
closed intake pressure
switch?
(see photo 31)
Y
Isolate (disconnect) heater from
intake vent system and
Restart heater.
Does purge LED illuminate?
N
Y
N
Page 36

Bradford White eF Series Specifications

General

Type	Tank
Efficiency	High Efficiency
Vent Type	Power Vent
Fuel Type	Natural Gas or Propane
Recovery Rate	Varies by model
Capacity	40-100 gallons
Warranty	6 or 10 Year Limited Tank & Parts Warranty (varies by model)