Appendix
0020277263_00 ecoFIT sustain Operating instructions
9
Appendix
A
Status codes
–
Overview
Status codes that are not listed here can be viewed in the installation instructions.
Status code
Meaning
Displays in heating mode
S.00
Heating: No heat demand
S.02
Heating mode: Pump pre-run
S.03
Heating mode: Ignition
S.04
Heating mode: Burner on
S.06
Heating mode: Fan overrun
S.07
Heating mode: Pump overrun
S.08
Heating, remaining anti-cycling time xx mins
Displays in cylinder charging mode (product with hot water generation through external domestic hot water cylinder)
S.20
Hot water requirement
S.22
DHW mode: Pump pre-run
S.24
DHW mode: Burner on
Other displays
S.31
No heat demand: Summer mode
S.34
Heating mode: Frost protection
S.46
Comfort protection mode, flame loss at minimum load
B
Troubleshooting
Fault
Cause
Measure
Product does not start
up:
–
No hot water
–
Heating remains cold
The gas isolator cock installed on-site and/or the gas
isolator cock on the product is closed.
Open both gas isolator cocks.
The power supply in the building is disconnected.
Check the fuse in the building. The product
switches on automatically when the power is
restored.
The product is switched off.
Switch on the product.
The heating flow temperature is set too low or to the
Heating off
position, and/or the hot water temperature
is set too low.
Set the heating flow and hot water temperature.
There is air in the heating installation.
Have a competent person purge the heating
installation.
After three unsuccessful ignition attempts, the product
switches to fault mode (fault message:
F.28
).
Press the fault clearance key for one second.
The product makes another attempt to ignite the
flame.
If you have been unable to eliminate the ignition
fault after three fault clearance attempts, consult
a competent person.
There is a fault in the flue gas route.
Have a competent person rectify the fault.
Heating does not start.
The external controller is not set correctly.
Set the external controller correctly (
→
Controller
operating instructions).
