21
Errors
Error
Boiler status
DHW sensor error
ERROR E-04
What to do?
Possible causes:
Press „OK” button to confirm error. Contact authorized serviceman. Authorized serviceman can check connection
between mainboard and DHW sensor. Replace DHW sensor. Replace mainboard.
User or authorized serviceman can disable DHW sensor (by this DHW pump is enabled to work always)
USER/SERVICEMAN PIN ->
BOILER INTERVENTION WORK
Interruption on el. connections between mainboard and DHW sensor. Broken DHW sensor.
Broken sensor input on mainboard.
Error
Boiler status
return line sensor error
ERROR E-05
option 1: CAN’T WORK ->
ERR-OFF-stage
option 2: WORKS
Possible causes:
Interruption on el. connections between mainboard and return sensor. Broken return line sensor.
Broken sensor input on mainboard.
Error
Boiler status
flue gas sensor error
ERROR E-02
CAN’T WORK ->
ERR-OFF-stage
What to do?
Possible causes:
Press „OK” button to confirm error. Contact authorized serviceman. Authorized serviceman can check connection
between mainboard and flue gas sensor. Replace flue gas sensor.
User or authorized serviceman can DISABLE flue gas sensor
USER/SERVICEMAN PIN ->
BOILER INTERVENTION WORK
Interruption on el. connections between mainboard and flue gas sensor. Broken flue gas sensor.
Broken sensor input on mainboard.
WORKS (DHW pump can’t works)
On boiler screen error is shown but boiler continues to work normaly. Info screen about this error can be
remove by pressing ESC button but it will appear after few sec. until error is resolved.
Configuration 1:
CAN’T WORK -> ERR-OFF-stage
(return line protection is done by 3-way mixing valve with
actuator (protection valve is ENABLED and return line sensor is automatic enabled
boiler can’t work without this sensor in this configuration
Configuration 2:
WORKS/ERROR is only SHOWN
(return line protection is done by 3-way thermostatic valve and
(protection valve is DISABLED, return line sensor is enabled)
What to do?
Configuration 1 and 2:
Press „OK” button to confirm error. Contact authorized serviceman. Authorized serviceman can check
connection between mainboard and return line sensor. Replace return line sensor.
Configuration 2:
authorized serviceman can disable return flow sensor under installation menu (PIN)
Technical instructions REGULATION
BioTec-C