78 • MN-35949 • Rev 04 • 06/16 • Combitherm® CT PROformance™ Series • Technical Service Manual
Troubleshooting
Classic, Boiler-Free: Appliance Dead — No Display or Operation
Is power connected to the
appliance?
Is there correct voltage at the
power source (outlet)?
Yes
Is there correct voltage at
the main terminal block
(L1/2/3)?
Reair or replace the faulty
cord, plug, or wiring.
Is there voltage at the F1
fuse block?
Is there continuity through
the terminal module 8A fuse?
No
Yes
Is there voltage across L/N
at the power supply?
Is there 12 VDC output
from the power supply?
Inspect and repair the wiring between
terminal block 33-3 and the power supply
terminal L, and between the terminal block
27-1 and the power supply terminal N.
No
Yes
No
Yes
No
Yes
No
Yes
Inspect and/or reset the
circuit breaker.
No
Replace the faulty power
supply.
No
Yes
Is there 12 VDC across
Control Board (CB)
terminal X07 pins 1-4?
Repair the wiring between
the power supply and the
CB terminal X07.
No
Is the 12 VDC across
Interface Board (IB)
terminal X01 pins 1-4?
Yes
Repair the wiring between the
CB X07 and the IB X01.
No
Yes
Inspect, test, repair, or replace
the following connections and
component as needed.
Repair the wiring.
Replace the fuse and test.
Is the ethernet
connected between the IB
(X05) and the CB (X15)?
Yes
Is the IB on/off board
input X06?
Repair the IB on/off input
X07.
No
Connect the ethernet cable
between the IB X05 and the
CB X15.
No
Install power to the
appliance, turn on main
circuit breaker or plug in
the appliance.
Yes
The appliance is working.
Содержание COMBITHERM CT PROFORMANCE 10-10E
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