KYRA D 30 SI UNIT COND
A73022660
46
EN
Fault
code
Fault
Possible cause
Cure
F35
Faulty mains fre-
quency
Electric mains trouble
Check the electrical
system
F37
Incorrect system
water pressure
Pressure too low
Fill the system
Sensor damaged
Check the sensor
F39
External probe fault
Probe damaged or wiring
shorted
Check the wiring or
replace the sensor
Probe disconnected after
activating the sliding
temperature
Reconnect the
external sensor or
disable the sliding
temperature
F40
Incorrect system
water pressure
Pressure too high
Check the system
Check the safety
valve
Check the expansion
vessel
A41
Sensor positioning
Delivery sensor not inser-
ted in boiler shell
Check the correct
positioning and ope-
ration of the heating
sensor
F42
Heating sensor fault Sensor damaged
Replace the sensor
F47
System water pres-
sure sensor fault
Wiring disconnected
Check the wiring
5. TECHNICAL DATA AND CHARACTERISTICS
5.1 Main components, dimensions and connections
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g.36 - Side and top view
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g.37 - Front view
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g.38 - Rear view
