Cetetherm Midi Wall IQHeat, Installation, Service And Operating Instruction

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Cetetherm Midi Wall IQHeat
Installation, service and operating instruction
23
9.1.4 Nosie in the DHWC system
Reason Action
The DHWC pump capacity set too
high Reduce the pump capacity
Reduce the pump capacity by selecting a lower setting on the pump
when needed.
Air in the DHWC pump Vent the DHWC pump
Set the pump to speed III. Loosen the pump motor end nut to and let it
stay opened until the air in the pump is released. When the pump has
been vented, i.e. when the noise has ceased, set the pump according
to the recommendations.
The DHWC pump motor or pump
component damaged Change pump components or the complete DHWC pump
If it becomes necessary to change the driving side of the pump, it can
be dismantled without removing the whole pump.
See chapter
11 Maintenance and repairs .
9.2 Heating system, service instruction
9.2.1 Heating system temperature too high or too low
Reason Action
Heating supply temperature sensor
and outdoor temperature sensor does
not work Check the heating supply temperature sensor and outdoor
temperature sensor for correct placement and function
.
The two temperatures can be monitored on the control panel display,
see document
User instruction IQHeat Doc-1552 chapter General
Functions section Reading the current temperatures and valve modes .
The heating control equipment may
need to be adjusted Check and adjust the heating curve
See chapter Heating circuit in User instruction IQHeat Doc-1552 .
Heating circuit strainer clogged See 10.3 Check heating circuit strainer .
Heating valve and/or actuator does not
work See
10.2 Check the function of the heating and hot water valve and
actuator
.
9.2.2 No heating
Reason Action
Circulation pump not running Check that the electrical power is on.
Air pockets in the substation or in the
heating circuit Check the circulation pump
If the pump fails to start after stopping, start the pump at the highest
setting.
Check pre-set heating parameters on the control panel display
•
set operating mode
•
set time and date
•
night time decrease
•
week program
•
weekend decrease
See User instruction IQHeat Doc-1552 .
To check operating mode, time and date see section Reading the
current temperatures and valve modes in chapter General Functions.
For more information about heating settings see chapter
Heating
Circuit.