Alliance Laundry Systems CA050L - Control Has No Display - QT and RQ Control Suffixes

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Hybrid Timer Control Troubleshooting
63.Control Has No Display – QT and RQ Control Suffixes
Is there voltage
supplied to the unit?
Is there voltage to the
input side of the
primary fuse(s)?
Is there voltage to the
output side of the
primary fuse(s)?
Is there voltage
across the primary side
of the transformer?
Is there voltage across
2 & 3 of transformer
secondary?
Is there volt age across
terminals H1-3 &
H1-1 on hybrid timer?
Check H6-1 (+) and
H6-2 (-) for +5 VDC.
Connect supply
voltage and run unit.
Correct wiring
between primary
fuse and supply.
Replace primary
fuse.
Correct wiring
between transformer
and primary fuse.
Replace transformer
Correct wiring
between hybrid timer
and transformer
secondary.
Replace hybrid
control assembly.
YES
(1)
(6)
(2)
(3)
(4)
(5)
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
Replace display
assembly.
Gas, steam and electric heat.
Single and three phase supply.
Note: Reference volt
age to
supply neutral.
TMB2000S
TMB2000S