Ariston EuroCombi Type C A27 MFFI Anweisungen für die Wartung - Seite 24
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D
IS
THERE STILL A
PROBLEM?
NO
FUNCTIONS
NORMALLY
Delivery of hot water for domestic use:
Delivery of hot water for domestic use:
1
when the tap is turned on, the burner goes out.
when the tap is turned on, the burner goes out.
Delivery of hot water for domestic use:
Delivery of hot water for domestic use:
2
the radiatores are heated in summer mode.
the radiatores are heated in summer mode.
Delivery of hot water for domestic use:
Delivery of hot water for domestic use:
3
water temperature is not satisfactory.
water temperature is not satisfactory.
Delivery of hot water for domestic use:
Delivery of hot water for domestic use:
4
noisy operation.
noisy operation.
Drop/increase in pressure in primary circuit.
Drop/increase in pressure in primary circuit.
5
Repeated shutdowns.
Repeated shutdowns.
6
Safety thermostat is triggered repeatedly.
Safety thermostat is triggered repeatedly.
7
When the cold water tap is turned off, the
When the cold water tap is turned off, the
8
boiler comes on.
boiler comes on.
Temperature of radiators not satisfactory.
Temperature of radiators not satisfactory.
9
24
Supplied By www.heating spares.co Tel. 0161 620 6677
YES
LIST OF MALFUNCTIONS
POSSIBLE CAUSES
- Air in the secondary exchanger
- Air in the secondary exchanger
- Hot water pressure switch is defective
- Hot water pressure switch is defective
- 3-way valve is defective
- 3-way valve is defective
- 3-way valve is defective
- 3-way valve is defective
- Check heating sensors
- Check heating sensors
- Check gas settings and regulation
- Check gas settings and regulation
- Check water flow rate
- Check water flow rate
- Check exchanger for domestic hot water
- Check exchanger for domestic hot water
- Primary exchanger is defective
- Primary exchanger is defective
- Low water pressure in heating system
- Low water pressure in heating system
- Check gas settings and regulation
- Check gas settings and regulation
- Check for leaks in heating circuit
- Check for leaks in heating circuit
- Defective water supply inlet valve
- Defective water supply inlet valve
- Secondary exchanger is defective
- Secondary exchanger is defective
- Expansion vessal is empty
- Expansion vessal is empty
- Detection electrodes are defective
- Detection electrodes are defective
- Check gas settings and regulation
- Check gas settings and regulation
- Check electrical circuit for flamedetection
- Check electrical circuit for flamedetection
- Faulty (contacts) ntc heating sensors-
- Faulty (contacts) ntc heating sensors-
- Defective (poorly calibrated) safety thermostat
- Defective (poorly calibrated) safety thermostat
- Presence of air in the primary water circuit
- Presence of air in the primary water circuit
- Drop in pressure in the water mains, resulting
- Drop in pressure in the water mains, resulting
in water hammering
in water hammering
- Check ntc heating sensor
- Check ntc heating sensor
- Check by-pass
- Check by-pass
- Check gas settings and regulation
- Check gas settings and regulation
B029