Classic, Gas, Boiler-Free: No Steam Production; Steam At 212°F (100°C) - Alto-Shaam Combitherm CT PROformance Series Service Manual

Troubleshooting
Classic, Gas, Boiler-Free: No Steam Production — Steam at 212°F (100°C)
Is the convection fan motor spinning?
Is the Steam Bypass Temperature Probe B5 below the set
Is the burner igniting?
Is the Filtered Steam Injection Solenoid Y1 being energized?
Is the Y1 solenoid valve opening?
Is water going through the flow control valve?
Is water being injected into the fan wheel inside the
appliance?
The appliance should begin producing steam in 5 minutes.
90 MN-35949
•
Yes
point?
Yes
Yes
Yes
Yes
Yes
Yes
Rev 07 01/20
• • •
No
See "No High Speed Convection Motor Operation".
The appliance will not call for steam production until the
No
B5 probe is below the set point. If the B5 probe is reading
incorrectly, test the probe and replace if necessary.
No
Determine which line is missing at the Y1 solenoid.
• A1 is L1 supplied from Control Board (CB) terminal X04
No
pin 3.
• A2 is L2 supplied from Y3/A2 which is supplied from
terminal block 27-17.
No
No Inspect, clean, replace the flow control valve as necessary.
Remove the obstruction between the flow control valve and
No
Combitherm® CT PROformance™ and CT Classic™ Series Technical Service Manual
See "No Combustion On A Call For Heat".
Replace the faulty solenoid.
the injection tube.