Ariston Euro Combi A/27 MFFI - Page 24

24
B029
IS
THERE STILL A
PROBLEM?
FUNCTIONS
NORMALLY
NO
YES
LISTOFMALFUNCTIONS POSSIBLE CAUSES
1
2
3
4
5
6
7
8
9
Deliveryofhot waterfordomesticuse:
when thetapisturnedon,theburnergoesout.
Deliveryofhot waterfordomesticuse:
theradiatoresareheatedin summermode.
Deliveryofhot waterfordomesticuse:
watertemperatureisnot satisfactory.
Deliveryofhot waterfordomesticuse:
noisyoperation.
Drop/increasein pressurein primarycircuit.
Repeatedshutdowns.
Safety thermostatistriggeredrepeatedly.
When thecoldwatertapisturnedoff,the
boilercomeson.
Temperatureofradiatorsnot satisfactory.
Deliveryofhot waterfordomesticuse:
when thetapisturnedon,theburnergoesout.
Deliveryofhot waterfordomesticuse:
theradiatoresareheatedin summermode.
Deliveryofhot waterfordomesticuse:
watertemperatureisnot satisfactory.
Deliveryofhot waterfordomesticuse:
noisyoperation.
Drop/increasein pressurein primarycircuit.
Repeatedshutdowns.
Safety thermostatistriggeredrepeatedly.
When thecoldwatertapisturnedoff,the
boilercomeson.
Temperatureofradiatorsnot satisfactory.
- Airin thesecondaryexchanger
- Hot water pressure switch is defective
- 3-way valve is defective
- 3-way valve is defective
- Checkheatingsensors
- Checkgassettingsandregulation
- Checkwaterflowrate
- Checkexchangerfor domestic hot water
- Primary exchanger is defective
- Low waterpressurein heating system
- Checkgassettingsandregulation
- Checkforleaksin heatingcircuit
- Defectivewater supplyinletvalve
- Secondaryexchangerisdefective
- Expansion vessal is empty
- Detection electrodes are defective
- Checkgassettingsandregulation
- Checkelectrical circuit for flamedetection
- Faulty(contacts)ntcheating sensors-
- Defective (poorly calibrated) safety thermostat
- Presenceofair intheprimarywater circuit
- Drop inpressurein thewatermains,resulting
in waterhammering
- Checkntcheating sensor
- Checkby-pass
- Checkgassettingsandregulation
- Airin thesecondaryexchanger
- Hot water pressure switch is defective
- 3-way valve is defective
- 3-way valve is defective
- Checkheatingsensors
- Checkgassettingsandregulation
- Checkwaterflowrate
- Checkexchangerfor domestic hot water
- Primary exchanger is defective
- Low waterpressurein heating system
- Checkgassettingsandregulation
- Checkforleaksin heatingcircuit
- Defectivewater supplyinletvalve
- Secondaryexchangerisdefective
- Expansion vessal is empty
- Detection electrodes are defective
- Checkgassettingsandregulation
- Checkelectrical circuit for flamedetection
- Faulty(contacts)ntcheating sensors-
- Defective (poorly calibrated) safety thermostat
- Presenceofair intheprimarywater circuit
- Drop inpressurein thewatermains,resulting
in waterhammering
- Checkntcheating sensor
- Checkby-pass
- Checkgassettingsandregulation
D