MN-35949
•
Rev 07
•
01/20
•
Combitherm® CT PROformance™ and CT Classic™ Series Technical Service Manual
•
89
Troubleshooting
PROformance, Gas, 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 Steam Bypass Temperature Probe B5 below the set
point?
No
The appliance will not call for steam production until the
B5 probe is below the set point. If the B5 probe is reading
incorrectly, test the probe and replace if necessary.
Yes
Is the burner igniting?
No
See “No Combustion On A Call For Heat”.
Yes
Is the Filtered Steam Injection Solenoid Y1 being energized?
No
Determine which line is missing at the Y1 solenoid.
• A1 is L1 supplied from the Control Board (CB) terminal X04
pin 3.
• A2 is L2 supplied from Y3/A2 which is supplied from
terminal block 27-17.
Yes
Is the Y1 solenoid valve opening?
No
Replace the faulty solenoid.
Yes
Is water flowing though the flow control valve?
No
Inspect, clean, replace the flow control as necessary.
Yes
Is water being injected into the fan wheel inside the
appliance?
No
Remove the obstruction between the flow control valve and
the injection tube.
Yes
The appliance should begin producing steam in 5 minutes.
Содержание COMBITHERM CTP6-10e
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