
E20_2
Corrector CM2K 6. circuit
Boiler status:
Pump of 6+ heating circuit work in
intervention mode by heating curve. Boiler work normally.
Possible causes
:
Error on room corrector of 6+ heating circuit (CM2K
regulator), bad corrector connection to the CM2K or room
corrector failure.
E16_3
Boiler status:
Boiler work normally.
Possible causes
:
Interruption in el. connections between
boiler and CM2K (between two CM2K’s), connection on
boiler and CM2K (or two adjecent CM2K’s) or CM2K
module is invalid.
Communication error with
CM2K module (7th and
8th circuit)
E17_3
Sensor CM2K 7. circuit
Boiler status:
Pump of 7+ heating circuit doesn't work.
Boiler work normally.
Possible causes
:
Error on flow temperature sensor of 7+
heating circuit (on regulator CM2K).
E18_3
Corrector CM2K 7. circuit
Boiler status:
Pump of 7+ heating circuit work in
intervention mode by heating curve. Boiler work normally.
Possible causes
:
Error on room corrector of 7+ heating circuit (CM2K
regulator), bad corrector connection to the CM2K or room
corrector failure.
E19_3
Sensor CM2K 8. circuit
Boiler status:
Pump of 8+ heating circuit doesn't work.
Boiler work normally.
Possible causes
:
Error on flow temperature sensor of 8+
heating circuit (on regulator CM2K).
E20_3
Corrector CM2K 8. circuit
Boiler status:
Pump of 8+ heating circuit work in
intervention mode by heating curve. Boiler work normally.
Possible causes
:
Error on room corrector of 8+ heating circuit (CM2K
regulator), bad corrector connection to the CM2K or room
corrector failure.
E28
Communication error with
CMGSM
Boiler status:
Boiler work normally.
Possible causes
:
Interruption in el. connections between
boiler and CMGSM or invalid CMGSM module.
E29
Communication error with
motherboard 2
Boiler status:
Boiler goes to phase „OFF”.
Possible causes
:
Call service man!
Error list
E30
Communication error with
WiFi
Boiler status:
The boiler works normally. The problem
occurs in work of additional equipment internet supervision
(WiFi) if is installed.
Possible causes
:
Check the UTP cable and its
connections with the electric boards.
Technical instructions CONTROL UNIT
BioTec Plus
42