Rinnai INFINITY REU-3203W Service Manual page 38

13.Electrical Fuse
14.Transformer
Infinity REU-3203W
a.) Measure voltage between blue and brown
on the connecter J
Normal :AC 207~264V
If normal proceed to b.
Faulty: Check if voltage on the fuse ter-
minal is AC207~264V
b.) Measure voltage between white and white
on the J .
8
Normal: AC207~264V.
Faulty: replace surge protecter unit.
Check for the transformer
a.) Measure the voltage between red and red
on the transmission connector (A
Normal: AC90~110V (12~21 Ω)
If normal proceed to b.
Faulty: Check if the voltage on fuse ter-
minals is AC90~110V.
b.) Measure the voltage of the connector (A)
on the PCB.
Normal: Between Brown and Grey AC
30~50V
Between Yellow and Grey AC
180~220V
If normal, proceed to
Faulty: Replace transformer.
c.)
Measure voltage between Green and
Green of connector (D) on PCB.
Normal: AC 12~18V
If normal, proceed to 4.
Faulty: Replace transformer.
Note) The above transformer voltages are
measured while the appliance is in standby
mode - not while it is operating.
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