Table of Contents
Advertisement
8.10
Riello digital control boxes
8.10.1 Control box LED codes
Lockout types (burner in lockout)
Refer to Fault finding chart, section 8.10.2, go to line number on chart
RED steady ON
Lockout for no flame after safety time
RED 0.5 seconds ON/ RED 0.5 seconds OFF
Lock out for false flame signal
RED 0.2 seconds ON /RED 0.2 seconds OFF
Lock out for maximum number of flame loss re-lights
RED 2.5 seconds ON / ORANGE 0.5 seconds ON
Lock out for fan motor failure
RED 2.5 seconds ON / GREEN 0.5 seconds ON
Lock out for oil valve circuit driver failure
ORANGE 0.5 seconds ON / GREEN 0.5 seconds ON
Lock out for EEPROM failure
Red 0.5s ON / Red 2.5s OFF
Max pre-heat time exceeded (10 minutes)
Table 15
8.10.2 Fault finding
Line Check
1
Control box is supplied with heat demand?
2
Is the pre-heater fitted or if no pre-heater is fitted, is the link fitted?
3
Motor starts after initialization check time 3.5 seconds?
3a
Green 0.5 seconds ON/Red 0.5 seconds ON before lockout?
3b
Fan motor or oil pump seized?
3c
230 Volts to motor across blue and black motor wires?
Approximately 35 across blue and black motor wires?
3d
Table 17
Greenstar Heatslave II
2022 +
6 721 843 978 (2022/01)
Anomaly types (Burner in stand-by)
Green 0.5 s ON /
Green 2.5 s OFF
Pre-heating time
[3]
Green 0.5s ON /
RED 0.5s ON
Extraneous light
[5a]
Orange steady ON
Abnormal frequency
[9]
supply
[3d]
Orange 0.2s ON /
[8c]
Green 0.2s ON
Control box internal
Replace
error
control
box
Green 0.2s ON /
Red 0.2s ON
Reset pushbutton or
[2]
remote reset failure
Table 16
Last lockout memory feature
The control box allows the last lockout that happened to be displayed.
Access to this function is possible in both STANDBY and OPERATING
status.
▶ Keep the button pressed for 25 seconds = t < 30 seconds
▶ Release the button.
LED displaying the type of lockout memorised for 10 seconds
The time displaying the type of lockout can be extended by pressing the
reset button again during the display of the lockout (the lock out display
continues for another 10 seconds)
Action
Yes
Go to line 2
No
Check boiler and system controls
Yes
Go to line 3
No
Fit the Pre-Heater or link
Yes
Go to line 4
No
Go to line 3a
Yes
Go to line 5a
No
Go to line 3b
Yes
Replace seized component
No
Go to line 3c
Yes
Go to line 3d
No
Replace control box
Yes
Replace motor capacitor
No
Replace fan motor and check control box
Fault finding and diagnosis
Fit pre-heat link
Lock out after 25s
When an anomaly appears during:
▶ pre-purge. the burner remains in pre-
purge.
▶ after ignition, burner remains in
operation.
When anomalies disappear the burner re-
starts
Remote reset / pushbutton is activated for
more than 60 seconds.
When anomaly appears the burner does
not stop
59
Advertisement
Table of Contents
