Riello FS20+G.T. Montage- Und Bedienungsanleitung Seite 49

Signal
3 blinks The burner does not
switch on, and the
lockout appears
The burner switches
on, but then stops in
lockout
Lockout during pre-
purging phase
4 pulses The burner switches
on, but then stops in
lockout
Lockout when burner
stops
7 blinks The burner goes into
lockout immediately
following the appear-
ance of the flame
Burner goes into lock-
out during operation
10 blinks The burner does not
switch on, and the
lockout appears
The burner goes into
lockout
No blink The burner does not
start
The burner continues
to repeat the start-up
cycle, without lockout
Ignition with pulsations 43 - Poorly adjusted head . . . . . . . . . . . . . . . .
N.B.: If problems still occur after all of the above checks have been made, check the electrical connec-
tions on the plug and sockets, the damper and burner motor, gas control wiring ignition transformer
and external interlocks, if the burner still fails to function, replace the control box.
20014622
Problem
14 - Air pressure switch in operating position .
- Air pressure switch inoperative due to
insufficient air pressure:
15 - Air pressure switch incorrectly adjusted. .
16 - Pressure switch pressure test point . . . .
pipe blocked
17 - Poorly adjusted head . . . . . . . . . . . . . . . .
18 - High pressure in the furnace . . . . . . . . . .
19 - Defective motor control contactor . . . . . .
(only three-phase version)
20 - Defective electrical motor . . . . . . . . . . . .
21 - Motor lockout (defective electrical motor)
22 - Flame simulation . . . . . . . . . . . . . . . . . . .
23 - Permanent flame in the combustion . . . .
head or flame simulation
24 - The operation solenoid lets little gas . . . .
through
25 - Ionisation probe incorrectly adjusted . . . .
26 - Insufficient ionisation (less than 5 A) . . . .
27 - Earth probe . . . . . . . . . . . . . . . . . . . . . . .
28 - Burner poorly grounded . . . . . . . . . . . . . .
29 - Phase and neutral connections inverted .
30 - Defective flame detection circuit . . . . . . .
31 - Probe or ionisation cable grounded . . . . .
32 - Incorrect electrical wiring . . . . . . . . . . . . .
33 - Defective control box . . . . . . . . . . . . . . . .
34 - Presence of electromagnetic . . . . . . . . .
disturbances in the thermostat lines
35 - No electrical power supply. . . . . . . . . . . .
36 - A limiter or safety control device is open .
37 - Line fuse blocked. . . . . . . . . . . . . . . . . . .
38 - Defective control box . . . . . . . . . . . . . . . .
39 - No gas supply . . . . . . . . . . . . . . . . . . . . .
40 - Mains gas pressure insufficient . . . . . . . .
41 - Minimum gas pressure switch fails to . . .
close
42 - The gas pressure in the gas mains lies
very close to the value to which the mini-
mum gas pressure switch has been set.
The sudden drop in pressure after valve
opening causes temporary opening of the
pressure switch itself, the valve immedi-
ately closes and the burner comes to a
halt. Pressure increases again, the pres-
sure switch closes again and the ignition
cycle is repeated. And so on
44 - Ignition electrode incorrectly adjusted . . .
45 - Incorrectly adjusted fan air damper: too
much air
46 - Output during ignition phase is too high .
Possible cause
15 GB
Recommended remedy
Adjust or replace
Adjust or replace
Clean
Adjust
Connect air pressure switch to fan
suction line
Replace
Replace
Replace
Replace the control box
Eliminate persistence of flame or
replace control box
Increase
Adjust, see page 4
Check probe position
Withdraw or replace cable
Check grounding
Invert them
Replace the control box
Replace worn parts
Check
Replace
Filter or eliminate
Close all switches - Check connec-
tions
Adjust or replace
Replace
Replace
Open the manual valves between
contactor and train
Contact your GAS COMPANY
Adjust or replace
Reduce the minimum gas pressure
switch intervention pressure.
Replace the gas filter cartridge.
Adjust. See page 6
Adjust, see page 4
Adjust
Reduce