74 • MN-35949 • Rev 04 • 06/16 • Combitherm® CT PROformance™ Series • Technical Service Manual
Troubleshooting
PROformance, Electric with Boiler: No Steam Generator Fill
Are the High Water Level Probe
B1 and Low Water Level Probe
B2 reading empty?
Is the Y1 steam injection
solenoid being energized?
Is the Y1 solenoid
opening?
Make sure the connected water
pressure does not exceed 90 psi
and/or replace the faulty solenoid.
Is the generator filling with
water? (It should take approximately
45 seconds to satisfy the B2
sensing probe.)
Is the B2 water level
probe satisfied? If not, water
should be exiting the steam
exit port inside the appliance
cavity.
Investigate for scale build up
inside the tank, around the
water level probes and/or faulty
water level probe assembly.
No
Yes
Is the B1 water level
probe satisfied? The B1 water level
probe should satisfy approximately
10-15 seconds after B2.
Does the Y1 solenoid
de-energize?
Investigate for scale build up
inside the tank, around the
water level probes and/or faulty
water level probe assembly.
No
Yes
No
Yes
No
Yes
The control will not energize the Y1 fill
solenoid until the water level drops below
the B2 sensing probe. If the tank is known
to be empty, investigate for scale build up
and/or a shorted water level probe.
No
Yes
Determine which side of
the solenoid coil voltage is
missing and correct:
No
Check for an obstruction or leak
between the Y1 solenoid and the steam
generator. Also check if the water
supply is turned off or disconnected, or
check for a plugged filter cartridge.
A1 is L1 supplied from
Control Board (CB)
terminal X04 pin 3.
A2 is L2 supplied from A2
Y3 which is supplied from
terminal block 27-17.
Yes
Investigate the Control
Board (CB).
No
Yes
Does the Y1 solenoid close
and stop the fill cycle?
Ensure the water pressure
meets minimum and maximum
requirements and/or replace the
faulty solenoid valve.
No
The fill cycle is complete.
Yes
Содержание COMBITHERM CT PROFORMANCE 10-10E
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