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Hybrid Timer Control Troubleshooting
41. Unit Will Not Heat – Electric OPL (continued)
Please see following 2 pages for wiring diagram information.
Is there voltage to the
L1, L2 and L3
terminals of HC1?
Correct wiring
between HC1 and
line voltage.
Do all elements
produce heat?
Check elements for
shorts or opens.
Check wires
between contactors
and elements.
Is there voltage across
L3 & L1, L1 & L2 and
L2 & L3?
Check for
proper operation of
contactors, replace
them if necessary.
Is there voltage to the
L1, L2 and L3
terminals of HC2?
YES
NO
Correct wiring
between HC2 and
line voltage.
(11)
(12)
YES
NO
(13)(14)(15)
NO
YES
NO
YES
Unit is operational
Note: Please make
the oppropriate
adjustments if your
unit is single phase.
TMB2053S
(15)
(16)
Replace airflow
switch
Is the airflow switch
working properly?
NO
YES
Содержание YT025E
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