MN-35949
•
Rev 07
•
01/20
•
Combitherm® CT PROformance™ and CT Classic™ Series Technical Service Manual
•
63
Troubleshooting
PROformance, Electric, Boiler-Free: No Steam Production — Steam at 212°F (100°C)
Is the convection fan motor spinning?
No
See “Convection Motor Is Not Spinning”.
Yes
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.
• 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.
Yes
Is there line voltage being supplied to terminals 2-4-6 on the
K41/K44 contactors?
No
Repair the wiring issue between the main terminal blocks 1-1,
6-1, 11-1 and the K41/K44 contactors.
Yes
Is there line voltage across terminals 1-3-5 on the K41/K44
contactors?
No
Replace faulty contactor(s)
Yes
Is there voltage across the element loops at the convection
elements?
No
Repair the wiring between contactors and elements.
Yes
Are all element loops drawing current?
No
Replace the faulty element assembly.
Yes
Is the Y1 solenoid being energized?
No
Determine which line is missing at the solenoid:
• 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.
Yes
Is the solenoid valve opening?
No
Replace faulty solenoid.
Yes
Is water going through the flow control valve?
No
Inspect, clean, or replace flow control valve as necessary.
Yes
Is water being injected into the fan wheel inside the
appliance?
No
Correct the obstruction between the flow control valve and
the injection tube.
Yes
Appliance should begin producing steam in 2-5 minutes.
Содержание COMBITHERM CTP6-10e
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