Bradford White UDH-75T-50FR-3N - Manual (Page 11)

IGNITER, ELECTRODE TESTING AND REPLACEMENT
With the pilot not in operation (no pilot flame) you can check the igniter and electrode circuit by viewing pilot
thru the sight glass located on the inner door and observing the spark action.
Step 1. Remove outer jacket door.
Step 2. Repeatedly depress the igniter while viewing the pilot thru the sight glass. If a spark is
present, the circuit is OK. If there is no spark, proceed to step 3.
Step 3. Remove white wire from igniter and install a jumper wire in its place. Hold the other end of the
jumper by the wire insulation or using an insulated tool, next to an unpainted surface such as the
feedline and depress the igniter. If there is a spark, the igniter is OK, the pilot is not functioning and
must be replaced, see SERVICE PROCEDURE III for pilot replacement. If no spark is present the
igniter is not functioning and must be replaced. See SERVICE PROCEDURE V for gas control
disassembly/reassembly.
Repeatedly
Depress Piezo
Igniter
SERVICE PROCEDURE IV
Igniter, Electrode Testing
and Replacement
11
View spark
Action through
Sight glass
Insulated jumper
wire
Feedline
The Bradford White
11