Service manual

80 70380601
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Hybrid Timer Control Troubleshooting
34.Display Flashes “dr” With Door Closed – OPL Models
Is there voltage between
H1-1 & H1-3 on
the control?
Replace hybrid
control.
Is there powe
r supplied
to the unit?
NO
Is there voltage at input
of primary fuses?
Is there voltage at
output side of the
primary fuses?
Is there voltage
across the
transformer primary?
Plug unit in and run
it.
Correct wiring
between primary
fuse and power
supply.
Replace primary
fuse(s).
Correct wiring
between primary
fuse and
transformer.
Is there voltage across
terminals 2 &
3 of transformer
secondary?
Replace
transformer.
Is there voltage at
the input of the
secondary fuse?
Is there voltage at
output side of
secondary fuse?
Correct wiring
between secondary
fuse and
transformer.
Replace se
condary
fuse.
Correct wiring between
lint panel switch
and hybrid control.
YES
NO
NO
NO
NO
NO
NO
NO YES
YES
YES
YES
YES
YES
YES
(1)
(2)
(3)
(4)
(5)
(6)
(7)
Is there voltage
at COM of
door switch?
Connect wiring
between COM and
output of secondary
fuse.
YES
NO
(8)
With door closed,
is there voltage
to NO of door
switch?
Replace
door switch.
YES
NO
(9)
(10)
(11)
With lint panel
closed, is there
power at NO
connection?
Replace
lint panel switch.
YES
NO
Is there voltage
at COM of the
lint panel
switch?
Connect wiring
between door switch
and COM of lint
panel switch.
YES
NO
TMB2052S
Gas, steam and electric heat.
Single and three phase power supply.