Stober ME 200, Руководство пользователя, Страница: 40 / 124

Troubleshooting
ME 200 – 6721841615 (2021/11) 40
5.2 Status indicator "1": alternative heat source
Table 14
5.3 Status indicator "2": heat source bypass valve/pump
for heating circuit 1 (stand-alone)
Table 15
A bypass valve not used is switched in the background. This can be
observed as monitor value in several operating units and cannot be
deactivated.
5.4 Status indicator "3": buffer cylinder
Table 16
5.5 Status indicator "4": conventional heat source block
Table 17
5.6 Faults not indicated at the module
Table 18
5.7 Faults with fault code
Table 19
Status indicator Possible cause Remedy
Constantly OFF no heat requirement Normal Operation
Constantly red Temperature sensor
was briefly
connected
incorrectly. ▶ Turn the module off and back on.
Flow/return
temperature sensor
of alternative heat
heat source defective ▶ Check temperature sensor.
▶ If values do not match, replace
the sensor
▶ Check voltage at temperature
sensor terminals in the module.
▶ If the sensor values match but
the voltage values do not,
replace the module
Constantly yellow Heat requirement or
flue gas temperature
≥ 100 °C (with stove)
Normal operation or heat-up phase
(transitional phase to normal
operation)
Constantly green No fault Normal Operation
Status indicator Description
Constantly OFF Stand-alone alternative heat source:
Pump of heating circuit 1 off; no heat requirement and no
heat flow through heating circuit 1
System with conventional heat source:
Bypass valve closed, conventional heat source released and
hydraulically connected.
Constantly green Stand-alone alternative heat source:
Pump of heating circuit 1 on
System with conventional heat source:
Bypass valve open; conventional heat source blocked and
hydraulically bypassed
Status indicator Possible cause Remedy
Constantly OFF Temperature sensor
not available ▶ Check connection of
temperature sensor.
▶ Check temperature sensor.
▶ Check connection of
temperature sensor.
Constantly red Temperature sensor
was briefly
connected
incorrectly. ▶ Turn the module off and back on.
Buffer cylinder
temperature sensor
faulty or heating
system flow/return
temperature sensor
faulty. ▶ Check temperature sensor.
▶ If values do not match, replace
the sensor.
▶ Check voltage at temperature
sensor terminals in the module.
▶ If the sensor values match but
the voltage values do not,
replace the module
Constantly yellow Buffer cylinder is at
least 10 K below the
set temperature
Normal Operation
Constantly green Buffer cylinder is no
more than 5 K below
the set temperature Normal Operation
Status indicator Possible cause Remedy
Constantly OFF No conventional heat
source connected If the blocking function is required:
▶ Check whether the heat source
supports the interlock via BUS or
external interlock connection.
▶ Check the corresponding
settings at the control unit.
yellow Conventional heat
source blocked Normal Operation
Constantly green Conventional heat
source released Normal Operation
Fault Possible cause Remedy
Active alternative heat
source frequently applies
internal limit or switches
off completely. The maximum permissible
temperature of the
alternative heat source
has been exceeded. ▶ Limit set
temperature for
charging of buffer
cylinder.
A01 - 1933 - [alternative heat source does not start within 15 minutes.]
Test procedure/Cause Action
Fault on heat source Check cause of fault and rectify the
fault.
Connection to heat source interrupted Check the electrical connection.