10 Troubleshooting
10.1 Procedures for fault conditions
CAUTION
Damage resulting from incorrect servicing
The combustion plant could be damaged.
▶
Do not carry out more than 2 lockout resets successively.
▶
Faults must be rectified by qualified personnel.
Irregularities of the boiler operation are detected and indicated by a flashing display.
A distinction is made between warnings and faults.
Warnings
A warning is indicated with a
W
and a number in the display. The signal will extinguish
automatically as soon as the cause of the warning has been eliminated. The boiler
does not lock out during a warning.
▶
Read the warning code.
▶
Rectify the cause of the warning with the aid of the table in chapter 10.3.1.
▶
If a warning appears more than once, the system should be checked by qualified
personnel.
Faults
A fault is indicated with an
F
and a number in the display. If a fault occurs, the systems
goes to lockout.
▶
Read the fault code.
▶
Rectify the cause of the fault using the table in chapter 10.3.2.
▶
Reset the fault using the reset button and wait for a few seconds.
✓
The system is reset.
If the fault cannot be reset using the [reset] button, briefly switch off power supply
using switch S1.
Installation and operating instruction
Gas condensing boiler WTC-GB 90-A
10 Troubleshooting
83266502 • 1/2010-08 • La
72-95
