DeDietrich C230 ECO-A 120 Installation, Operating And Service Manual page 69

C230 ECO-A
Code Description
0
Parameter fault
Maximum flow
1
temperature exceeded
Maximum heat
3
exchanger temperature
exceeded
Maximum heat
4
exchanger temperature
increase exceeded
Maximum difference
between heat exchanger
5
and return temperature
exceeded
Maximum difference
between heat exchanger
6
and flow temperature
exceeded
Waiting time release
8
signal drift
Phase and neutral of
9
mains supply mixed up
10 Shutdown interlock active
Shutdown interlock active
11
or frost protection active
Communication fault with
13
SCU (= optional PCB)
Possible cause

No flow or insufficient
flow

No flow or insufficient
flow during
heat demand

No flow or insufficient
flow

Sensor fault

No flow or insufficient
flow during heat demand

Sensor fault

No flow or insufficient
flow during heat demand

Sensor fault

External cause

Incorrectly set parameter

Bad connection

Mains supply incorrectly
wired

Floating or 2-phase
system

External cause

Incorrectly set parameter

Bad connection

External cause

Incorrectly set parameter

Bad connection

BUS connection
inadequate or non-
11 Control stops and faults
Check/solution

Reset dF and dU
Check:

Flow and/or reason
demand
Check:

Flow (direction, pump, valves)

That the system has been
correctly bled

Temperature sensors for
deviations

Water pressure in the system

Whether the heat exchanger is
dirty
Check:

Flow (direction, pump, valves)

That the system has been
correctly bled

Temperature sensors for
deviations

Water pressure in the system

Whether the heat exchanger is
dirty
Check:

Flow (direction, pump, valves)

That the system has been
correctly bled

Temperature sensors for
deviations

Water pressure in the system

Whether the heat exchanger is
dirty
Check:

Flow (direction, pump, valves)

That the system has been
correctly bled

Temperature sensors for
deviations

Water pressure in the system

Whether the heat exchanger is
dirty

Remove external cause

Check the parameter

Check the connection

Reconnect phase and neutral

Set parameter 32 to 0

Remove external cause

Check the parameter

Check the connection

Remove external cause

Check the parameter

Check the connection

Reconnect

Carry out automatic detection
for heat
69