Table Of Timings; Operations Status Indication; Faults Diagnosis - Lockouts - Riello 484LD2X Installation, Use And Maintenance Instructions

8.8

Table of timings

Symbol Description
t0 Standby: the burner is waiting for a heat request
t1 Standby time for an input signal: reaction time, control box remains in waiting status for t1
t2 Initialisation standby time: check time following the main power start-up
t2l Checks extraneous light during t2: waiting mode for t2l, then lockout: the motor does not start
t2p Oil pre-heating time : waiting mode for t2p, then there is a lockout (if there is a heater)
t3 Pre-purge time: the fan motor is working
t3l Checks extraneous light during pre-purging: control box goes into lockout at the end of t3l
t3i Spark pre-ignition time
ts Safety time
t4i Total spark ignition time
t4l Reaction time to achieve safety shutdown due to flame failure
t5i Spark post-ignition time
- Minimum time to reset the control box using push-button reset
Minimum time to reset the control box using remote reset
tr Re-cycles: Max. no. 3 repetitions of complete start-up sequence if there is a flame failure during
operation; the final action at the last attempt following flame failure is a lock-out
* independent by flame control-box
8.8.1

Operations status indication

Status
OFF
Pre-heating time (if there is a heater)
Pre-purge
Safety time
Normal operating position
8.8.2

Faults diagnosis - lockouts

Fault description
Extraneous light or parasite flame signal
Frequency main supply anomaly
Internal voltage fault
Reset push-button / Remote reset anomaly
Lockout for no flame after Ts
Lockout due to extraneous light or parasite flame signal
Lockout for maximum number of recycles (flame failure
during operation)
Lockout after exceeding max. pre-heating time
Lockout due to fan motor fault
Lockout due to malfunction in the internal control circuit
that drives the oil valve
Lockout due to eeprom fault
Key to layout
ON
* The blinking of the LED depends on the quality of flame signal.
2903266
Start-up, calibration and operation of the burner
OFF Colour code
RED
ORANGE
GREEN
Reset push-button colour
OFF
GREEN flashing
ORANGE blinking
GREEN blinking
GREEN*
Reset push-button colour Seconds
GREEN, RED
blinking alternately
ORANGE
ORANGE, GREEN
fast blinking alternately
GREEN, RED
fast blinking alternately
RED
RED
blinking
RED
fast blinking
RED flashing
RED, ORANGE
flashing inverted
RED, GREEN
flashing inverted
ORANGE, GREEN
blinking alternately
22 GB
Value (sec.)
max 600*
re-cycles
Seconds Colour code
- - -
0.5 2.5
0.5 0.5
0.5 0.5
- - Steady ON
Colour code
0.5 0.5
- - Steady ON
0.2 0.2
0.2 0.2
- - Steady ON
0.5 0.5
0.2 0.2
0.5 2.5
2.5 0.5
2.5 0.5
0.5 0.5
-
 1
3.5
25
15
25
2
5
10
 1
3
0.4
0.8
3