Olimpia splendid MAESTRO SMART 9HP - External Coil Temperature Alarm

MAESTRO SMART 25
7.12.5 External coil temperature alarm
Is the external heat
exchanger temperature greater
than 70°C(158°F)?
Are the air intake/outlet
tubes free of
obstructions?
Does the external fan
turn correctly?
Is air recirculated
through the
intake/outlet tubes, or
are the grilles not
original parts?
Does the condensate
disposal system work
correctly?
Is the external
coil clean?
Clean the Coil
Replace worn components
Replace air tubes/grilles following
instructions in the manual
Verify whether operating
temperature is beyond the
stated limits
Check for mechanical blockage
and verify board in/out voltage
External exchanger temperature
too high
Check:
-
Thermoactuator
-
Pump
-
Check valve
-
Distributor
-
Floats
Clear obstruction