64 • MN-35949 • Rev 04 • 06/16 • Combitherm® CT PROformance™ Series • Technical Service Manual
PROformance, Electric, Boiler-Free: No Steam Production — Steam at 212°F (100°C)
Is the convection fan
motor spinning?
Yes
No
See "Convection Motor is
Not Spinning".
Is the B5 probe below set
point?
No
The appliance will not call for
steam production until the
B5 probe is below set point.
If the B5 probe is reading
incorrectly, test the probe and
replace it if necessary.
Yes
Are the K41 and K44
convection element
contactors being energized?
No
Check for voltage across the coil of
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.
Is there line voltage being
supplied to terminals 2-4-6 on the
K41/K44 contactors?
Yes
Yes
Is there line voltage across
terminals 1-3-5 on the
K41/K44 contactors?
Replace faulty contactor(s)
Yes
Is there voltage across
the element loops at the
convection elements?
Repair the wiring between
contactors and elements.
Are all element loops
drawing current?
Replace the faulty
element assembly.
Yes
Is the Y1 solenoid being
energized?
No
Determine which line is
missing at the solenoid:
Is the solenoid valve
opening?
Replace faulty solenoid.
Is water going through the
flow control valve?
A1 is L1 and it is supplied
to K41 from the CB
terminal X02 pin 1.
A1 is L1 and it is supplied
to K44 from the CB
terminal X02 pin 2.
A2 is L2 and it is supplied
to K45 from the N4 high
limit terminal 11 and then
jumped over to A2 on K44.
A1 is L1 supplied from
Control Board (CB)
terminal X04 pin 3.
A2 is L2 supplied from
Y3, A2 is supplied from
terminal block 27-17.
No
No
Yes
Yes
No
Yes
Inspect, clean, or replace
flow control valve as
necessary.
No
Is water being injected into
the fan wheel inside the
appliance?
Yes
Appliance should begin
producing steam in 2-5
minutes.
Yes
Correct the obstruction
between the flow control
valve and the injection tube.
No
Repair the wiring issue
between the main terminal
blocks 1-1, 6-1, 11-1 and
the K41/K44 contactors.
No
No
Troubleshooting
Содержание COMBITHERM CT PROFORMANCE 10-10E
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