Troubleshooting
10
Logamatic 4323 - Subject to technical modifications.
73
10.2 Troubleshooting
MEC2 message Effect Remedy
DHW stays cold DHW is too cold.
Set DHW switch on module ZM424, FM441 or FM445 to
manual.
Notify your installer.
DHW stays cold (during
DHW heating via
Logamatic
EMS)
DHW is too cold. Notify your installer.
Remote control
Fault
The programming unit works
with the last values set on the
MEC2 programming unit.
Notify your installer.
External sensor fault
The heating system may heat
with higher temperatures to
safeguard the DHW flow.
Notify your installer.
Tell your installer which temperature sensor is faulty.
Flow sensor fault It may get too hot.
If necessary, manually adjust the mixer.
Notify your installer.
Heating circuit x
communication
Fault
No communication between
the BFU of heating circuit x and
the control unit.
Remote control may be faulty.
Notify your installer.
DHW sensor fault
If the DHW sensor is faulty,
water will not be heated for
safety reasons.
Notify your installer.
Heating circuit x
in manual mode
Depending on switch positions,
pumps, servomotors etc. will
be operated manually.
The switch was set to manual (for maintenance or
troubleshooting).
Return the manual switch to "AUT" after the fault has been
remedied.
Substation flow sensor
fault
Possible over or under supply. Notify your installer.
Substation
Too little heat supply
Fault
Heating circuit x has
insufficient supply. A DHW
circuit is not being heated.
The external heat source must supply more or sufficient
heat.
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