Worcester 18/25 Instruction Manual download pdf (Page 45)

RIELLO

CONTROL BOX OPERATION

This operation instruction is provided to assist competent and suitably qualified engineers to

locate and rectify faults. Whilst every effort has been taken to ensure the information given is

correct and complete we cannot guarantee that every eventuality has been covered.

Worcester, Bosch Group cannot be held responsible for costs incurred by persons not deemed

to be competent.

In the lock-out condition, the oil pump can be primed

for 30 seconds:

1. Press the remote reset button for more than 6 seconds

and then release. The control box lock-out reset will

blink quickly green, orange and red.

2. Re-press the burner reset button and release within

3 seconds and pump priming starts.

Operational Codes

OFF OFF

Initial check time (11 seconds) before pre-purge OFF

Pre-purge (15 seconds) ORANGE Flashing

Safety time (maximum 5 seconds) GREEN Flashing

Running GREEN

Lock-out/Error Codes

False light before ignition GREEN, RED

Under voltage or over voltage RED, ORANGE

lock-out for no flame during safety time RED

Lock-out for false flame signal / RED Flashing

Lock-out for burner control error

Lock-out for maximum number of restarts RED Fast flashing

Pump Priming Cycle

Pump priming cycle GREEN, ORANGE, RED

STATUS CODE ADDITIONAL INFORMATION

Only when the solenoid valve is energised with no flame

signal.

Lock-out and Reset

The control box can be reset consecutively a maximum number of 5 times after which the

power supply has to be reset; then the control box can be reset a further 5 times.

Limit of Restarts

If the flame is lost during operation; the burner will restart 3 times. On the 4th restart the

burner will go to lock-out. By resetting the power supply the control box is reset and allows

3 restarts.

Flame Detection

Flame detection minimum current: 30µA

Flame loss maximum current: 25µA

False flame maximum current (without false light): 19µA

FAULT FINDING

INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR DANESMOOR UTILITY 18/25

8 716 106 256C (03/2010)

FAULT FINDING

& DIAGRAMS

8 716 106 256 C 03.10 30/3/10 14:24 Page 45

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Worcester 18/25 Instruction Manual Page 45

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