Fault Condition; System Pressure; Sealed Heating Systems - Worcester GREENSTAR HIGHFLOW 440CDI ERP User Instructions

3.6

FAULT CONDITION

In the unlikely event of a fault occurring while the boiler is in operation the reset button and the main power indicator will flash.
The display will show a fault code.
To reset the boiler:
▶ Press the reset button for three seconds.
The reset button and the mains power indicator will stop flashing.
The boiler will function normally, dependent on programmer and room thermostat settings.
If the fault cannot be cleared by pressing the reset button:
▶ Refer to the fault finding section on page 15 of this user guide.
▶ Call Worcester, Bosch Group, giving a description of the fault and, if possible, the fault code from the seven
segment display. Alternatively contact other Gas Safe registered personnel for assistance.
4

SYSTEM PRESSURE

4.1

SEALED HEATING SYSTEMS

This boiler is fitted to a sealed heating system which is pre-pressurised. Your installer will advise you of the minimum and maximum
pressure indicated on the pressure gauge.
▶ Check regularly that the pressure is maintained.
▶ If the pressure gauge reads less than 1 bar then the system requires re-charging.
▶ Contact your installer or maintenance engineer if a permanent significant decrease or increase in pressure is indicated on the
pressure gauge.
The filling method is a integral filling loop fitted valves and flexible hose.
GREENSTAR HIGHFLOW CDi
3 4
5
2
1 6
max
ErP
– 6 720 815 063 (2015/05)
1
1.
2
3
2
1
min
2
1 1 3
0 4
bar
reset
eco
4
e
6
max
System Pressure
9