66 • MN-35949 • Rev 04 • 06/16 • Combitherm® CT PROformance™ Series • Technical Service Manual
Troubleshooting
PROformance, Electric: No Convection Heat
Is the convection
fan motor spinning?
Yes
No
See "Convection Motor is
Not Spinning".
Is the N6 oven temperature
probe below set point?
No
The convection element contactors
will not be energized until the N6
probe is below set point.
Yes
Are the K41 and
K44 convection element
contactors closed?
No
Is there line voltage being
supplied to terminals 2-4-6 on the
K41/K44 contactors?
Yes
Is there line voltage across
terminals 1-3-5 on the
K41/K44 contactors?
Repair the wiring between
contactors and elements.
Yes
Is there voltage across
element loops at the
convention elements?
Replace faulty contactor(s).
Are all element loops
drawing current?
Replace faulty element
assembly.
No
Yes
No
Repair wiring issue
between pain terminal
blocks 1-1, 6-1, 11-1 and
K41/K44 contactors
No
Yes
No
Check for voltage across the coil
of the K41 and K42 convection
element contactors. If voltage is
present, replace faulty contactor(s).
If voltage is not present, determine
which leg is missing and correct.
A1 is L1 and it is supplied
to the K41 contactor from
the Control Board (CB)
terminal X02 pin 1.
A1 is L1 and it is supplied
to the K44 contactor from
the CB terminal X02 pin 2.
A2 is L2 and it is supplied to
K45 from the N7 high limit
terminal 11 and then jumped
over to A2 on the K44. Reset
High Limit if tripped.
Содержание COMBITHERM CT PROFORMANCE 10-10E
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