Installation and operating instruction
Oil condensing boiler WTC-OB 18-B
10 Troubleshooting
83311002 1/2018-03 La
90-132
10 Troubleshooting
10.1 Procedures for fault conditions
Check prerequisites for operation:
Voltage supply available.
Heating switch is set to On.
Remote control station set correctly.
The appliance electronics detect irregularities from the appliance and displays them
flashing.
The following conditions can occur:
Warning
Fault
Warnings
A warning is indicated with a
W
and a number in the display. The signal will extin-
guish automatically as soon as the cause of the warning has been eliminated. The
system does not lock out during a warning.
Example
If a warning appears more than once, the system should be checked by qualified
personnel.
Read and rectify the warning [ch. 10.3].
Faults
A fault is indicated with an
F
and a number in the display. If a fault occurs, the
systems goes to lockout.
Example
Faults must only be rectified by qualified personnel.