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FAULT CODE DISPLAY
The following graphs describe the lock out codes of the water heater. A lock out code can only be removed by a manual reset of the water
heater. NOTICE: Before resetting the water heater always check the water heater, DHW system and all components corresponding to the
related lock out description. Never just reset the water heater, before analysing the possible cause of failure.
L
-O
C
OCK
UT
ODES
Having a lockout means that the water heater needs a manual reset to start operating again.
When the water heater is in lockout the backlight of the display blinks on and off.
Explanation > 9
Explanation > P
Display message
F0
Reason
Flow sensor not detected by the water heater caused by faulty connection/sensor.
Display message
F1
Reason
Flow temperature exceeds the limit which has been set in the parameters.
Display message
F1
Reason
The maximum return temperature as set in the parameters is exceeded.
Display message
F3
Reason
Return sensor not detected by the water heater caused by faulty connection / sensor.
Display message
F6
Reason
Flue gas sensor not detected by the water heater caused by faulty connection / sensor.
Display message
F7
Reason
Flue gas temperature exceeds the limit which has been set in the parameters.
Display message
F8
Reason
Water heater is not starting after the programmed starting attempts.
9
9
,
5
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= time elapsed after fault & message.
= status of the pump during fault.
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75
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