
24
Warnings
Error
Boiler status
factory setting loaded
WARNING W-01
STANDBY
What to do?
Possible causes:
Set boiler configuration according installation type. Boiler works normal.
Factory setting is loaded.
Warning
Boiler status
power up
WARNING W-00
STANDBY
Possible causes:
What to do?
Nothing. Boiler works normal. Boiler enters PF-C-stage or PF-CS1-stage depending of boiler stage before power
failure occurs (stages without or with S1 sufix). If boiler was in OFF or GLW-OFF stage, after power return boiler
remains in one of this stages with sufix PF.
Information of return of the power supply after power supply failure.
Error
Boiler status
wrong date and time
WARNING W-02
WORKS NORMAL
What to do?
Possible causes:
Boiler work normal. Set date and time (important for time tables). Replace the battery.
Date and time is not set. Battery is empty.
Error
Boiler status
low return temperature
WARNING W-03
WORKS NORMAL
What to do?
Possible causes:
Check possition of the return line sensor. Contact authorized serviceman. Authorized serviceman can check
el. connection between mainboard and actuator, check if 3-way mixing valve and actuator are correct installed,
check working of the actuator, check actuator output on the mainboard.
Return line sensor is not in the correct possition. Return line protection is not installed correctly (3-way mixing
valve or/and actuator). Mixing valve actuator doesn’t work (damaged actuator, el. interruption between mainboard
and actuator, actuator output on the mainboard is damaged.)
5.2. WARNINGS
Technical instructions REGULATION
BioTec-C